NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 65 



Elytra are broadly imbricated and laterally fimbriated, the fringes 

 continued submarginally (pi. 15, fig. 181). The first are about as 

 broad as long, suborbicular in outline save at their anterior margin 

 where they are truncate. The next few pairs, to about the sixth pair, 

 are as long as, or longer than, wide with anterior margin only slightly 

 excavate (pi. 15, fig. 178). More posteriorly they are proportionately 

 broader and more distinctly reniform (pi. 15, figs. 182, 183). The 

 dorsal surface is covered with microtubercles which are largest on 

 anteriormost elytra, but inconspicuous throughout. 



Parapodia are fimbriated on their anterior sides, the notopodium 

 with about 4 longer papillae at its terminal portion, the neuropodium 

 with about 12 to 15 (pi. 15, fig. 180). The neuroacicular lobe is stout, 

 convex, projecting distally beyond the ventral cirri and notopodial lobe 

 in median parapodia (pi. 15, fig. 180). In anterior parapodia the neuro- 

 podia are less developed (pi. 15, fig. 179). Ventral cirri are simple, 

 tapering, with a dorsal flange and a smaller elevation at the proximal, 

 dorsal base. Notopodial setae are elongate, finely serrated. Superior 

 neuropodial setae include simple spinose (pi. 15, fig. 185) and slender 

 composite setae, the appendage with 1 (pi. 15, fig. 176) or 2 articles 

 (pi. 15, fig. 177), the shaft smooth or somewhat spiny. Median neuro- 

 podial setae are falcate, the tip bifid, the shaft smooth (pi. 15, figs. 186, 

 187). Inferior neuropodial setae are long, slender, articulated (pi. 15, 

 fig. 184). 



Sthenelais maculata belongs in the group with S. fusca, in having 

 simple, spinose neuropodial setae. It differs most conspicuously from 

 others of this group in its neuropodial proportions and the kinds of 

 setae. 



Holotype.— AHF no. 10. 



Distribution. — Independencia Bay, Peru (Holotype) ; Callao, Peru; 

 Manta, Ecuador; Tenacatita Bay, Mexico; Gulf of California, Mexico. 

 Shore to 75 fms. 



Sthenelais hancocki, new species 

 Plate 16, Figs. 188-202 



Collection. — 890-38. 3 specimens. 



There are 3 anterior fragments, the longest piece is 34 mm long for 

 64 segments. The width is 3 mm without, 4.5 mm with parapodia and 



