Iphionides glabra Hartmann-Schröder 1977

Iphionides glabra Hartmann-Schröder, 1977

Iphionides glabra Hartmann-Schröder, 1977:51, figs. 1–12.

MATERIAL EXAMINED.—CUBA. Playa Siboney, Provincia Oriente, coastal ground water, lower eulittoral, coarse sand with coral debris and detritus, 1973, L. Botosaneanu, collector, holotype (ZMH P-13634) and 2 paratypes (USNM 60005, exchange from ZMH P-13635).

DESCRIPTION.—Length of male holotype 5 mm, width with setae 2 mm, segments 39. Length of 2 male paratypes (USNM 60005) 4–4.5 mm, width 1.5 mm, segments 30–33. The body is elongate, rectangular, flattened ventrally and arched dorsally, colorless except for some scattered brown spots. The elytra, attached on bulbous elytrophores, are imbricated, cover the dorsum and continue to the end of the body (Figure 15A,C; Hartmann-Schröder, 1977, figs. 1, 2, 4). The surface of the elytra is nearly covered with hexagonal or polygonal areas, enclosing a secondary lattice pattern, differing from the numerous areolae, as found in Iphione (Figure 15H; Hartmann-Schröder, 1977, figs. 10, 11). Additional faint lines and scattered vesicles appear within the lattice structure. Near the elytral borders lacking the honeycomb lattice structure, there are more numerous scattered vesicles. Dorsal tubercles, corresponding in position to the elytrophores on the non-elytra-bearing segments, are slightly inflated medial to the large cirrophores of the dorsal cirri, wider basally, and with distal cirriform styles with scattered papillae (Figure 15A,D; Hartmann-Schröder, 1977, figs. 1, 2, 5).

The prostomium and first or tentacular segment are partially fused and withdrawn in the anterior segments (Figure 15A,B; Hartmann Schröder, 1977, figs. 1–3). The prostomium is oval; the anterior exposed part, not covered by segment 2, is slightly curved, with the anterolateral borders projecting anteriorly into triangular extensions (referred to as rudimentary lateral antennae by Hartmann-Schröder). The posterior part of the prostomium, covered by segments 2–4, is deeply incised with 2 pairs of eyes deeply buried on the brain and visible through the transparent integument; the anterior pair are smaller and closer together than the larger posterior pair. Stout tapered smooth palps emerge lateral and ventral to the prostomium. The facial tubercle, anterior to the prostomium and medial to the anterior extensions, appears somewhat papillose and continuous with the anterior lip of the mouth. The tentaculophores are cylindrical, extending anterolateral to the palps, each with an aciculum, few capillary setae, and pair of cirriform papillate tentacular cirri, the dorsal ones longer than the ventral. Segment 2 has large elytrophores bearing the first pair or elytra and extend anterolateral to the tentaculophores, with biramous parapodia and ventral buccal cirri, similar to the tentacular cirri, lateral to the lateral and posterior lips of the mouth (Figure 15A,B; Hartmann-Schröder, 1977, figs. 1–3). Segment 3 is not visible dorsally, the dorsal cirri and parapodia are wedged between the large elytrophores of segments 2 and 4.

The notopodia of the biramous parapodia are smaller than the larger neuropodia, rounded, with a projecting acicular process; the presetal lobes of the neuropodia are conical, with a projecting acicular process, the postsetal lobes being slightly shorter and rounded (Figure 15C,D; Hartmann-Schröder, 1977, figs. 4, 5). The notosetae are moderate in number, slender, spinous, tapering to capillary tips (Figure 15E; Hartmann-Schröder, 1977, fig. 6). The neurosetae are moderate in number, rather slender, of two types: upper few are tufted pinnate (similar to the upper neurosetae found in many sigalionids; Figure 15F; Hartmann-Schröder, 1977, figs. 7, 8), middle and lower ones with enlarged spinous regions and slightly hooked bare tips (Figure 15G; Hartmann-Schröder, 1977, fig. 9). The ventral cirri are short, tapered, with few papillae.

The pharynx has 2 pairs of yellow clasping jaws (Hartmann-Schröder, 1977, fig. 12). Nephridial papillae are indistinct. The posterior pygidium lacks anal cirri.

Gaudichaudius, new genus

TYPE-SPECIES.—Iphione cimex Quatrefages, 1866. Gender: masculine.

COMPOSITION.—G. cimex (Quatrefages, 1866), which includes Gattyana deludens Fauvel, 1932; G. iphionelloides (Johnson, 1901, as Harmothoe iphionelloides).