NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 27 



Family Polynoidae 



Key to Subfamilies of POLYNOIDAE herein considered 

 1. Prostomium with only two antennae; body short, depressed, 

 completely covered by elytra IPHIONINAE 



1. Prostomium with a median antenna in addition to the paired 

 ones; body short, depressed to elongate slender; completely 

 covered by elytra or more or less exposed 2 



2. Paired prostomial antennae inserted terminally, continuous 

 with the prostomial peaks .... LEPIDONOTINAE 



2. Paired prostomial antennae inserted ventrally, the prostomium 



terminating anteriorly in a pair of tapering peaks 



HARMOTHOINAE 



Subfamily Iphionieae Seidler 



Genus IPHIONE Kinberg 



Iphione ovata Kinberg 



Plate 3, Figs. 31, 32 



Iphione ovata Kinberg, 1855, p. 383; 1910, p. 8, pi. 3, figs. 8-8H, pi. 

 10, fig. 43; Chamberlin, 1919a, p. 64; Monro, 1928a, pp. 557- 

 558; 1928b, pp. 471-472. 



Collections.— nA-3?,, 232-34, 239-34, 343-35, 436-35, 446-35, 

 466-35, 498-36, 510-36, 518-36, 638-37, 662-37, 789-38, 796-38, 

 867-38. 28 specimens. 



Elytral margin entire, without lateral fringe, but with conspicuous 

 spines on the lateral and postlateral portions of the elytra. The pro- 

 stomium has 2 pairs of black eyes on its posterior half, and a tiny median 

 papilla midway between the eyes. The anterior paired antennae are in- 

 serted terminally, but the inflated appearance of the prostomial lobe ob- 

 scures the bases of the antennae from dorsal view. 



Parapodia are robust, the neuropodial lobes sharply truncate, the 

 neuroacicular lobe projects from the dorsal ectal margin (pi. 3, fig. 

 32). Notopodial setae are numerous, slender, hair-like, closely serrated. 

 Neuropodial setae are much coarser, the tip entire, with 15-20 trans- 

 verse rows of serrations (pi. 3, fig. 31). 



Distribution. — Iphione ovata Kinberg is widely distributed in tropi- 

 cal waters of the eastern Pacific, from Ecuador north to Agua Verde 

 Bay, Gulf of California, and westward to the Galapagos Islands and 

 the Hawaiian Islands. It is replaced by /. ?nuricata Savigny in the Indo- 

 Pacific region. 



