228 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



Nereis veleronis, new species 

 Plate 37, Figs. 67-73 



Collections.— Zn-?>5, 384-35 (Holotype), 385-35, 395-35. 12 speci- 

 mens. 



Length of 38 anterior segments is 21 mm; another nearly complete, 

 with 65 segments, is 26 mm long (393-35). The prostomium is broadly 

 rectangular, the 4 dark eyes subequal, well separated from one another. 

 Prostomial antennae are nearly half as long as the prostomium, and sep- 

 arated at their bases (pi. 37, fig. 67). 



Peristomial cirri are short, the longest extending distally to the third 

 parapodial segment. The peristomial segment is about twice as long as 

 the first parapodial segment (pi. 37, fig. 67). 



Paragnaths are tall, conical, though small. Area I has 2 cones in tan- 

 dem, which exceed in size the others on the maxillary ring; area II has 

 about 15 to 20 in 2 or 3 irregular rows; area III has 30 to 50 smaller 

 points in a broad transverse patch, approximately in 3 rows, those on the 

 maxillary side the smallest ; area IV has about 20 to 25 in a triangular 

 patch ; area V has none ; area VI has 5 to 9 smaller, subequal, in 2 rows ; 

 areas VII and VIII have a continuous band of numerous cones, forming 

 1 or 2 rows at the sides, but 4 to 6 rows ventrally. 



Parapodia in anterior segments (pi. 37, fig. 68) resemble those of 

 Nereis zonata Malmgren. In the more posterior parapodia, the dorsal 

 lobes are conspicuously larger, the dorsal lobe elongate, the dorsal cirrus 

 carried distally (pi. 37, figs. 70, 69). In posteriormost parapodia the mid- 

 dle and ventral lobes are far surpassed by the dorsal lobe (pi. 37, fig. 69). 

 Homogomph falcigerous notopodial setae are present from about the 

 thirtieth segment; their appendages are short, smooth (pi. 37, fig. 73). 

 Heterogomph falcigerous neuropodial setae have an appendage that is 

 finely serrated (pi. 37, fig. 72). 



Collection 384-35 includes a male epitokous specimen 16 mm long. 

 It consists of 14 anterior segments in which the first 7 segments have 

 modified dorsal cirri and 39 posterior, epitokous segments. A typical para- 

 podium is shown in plate 37, figure 71. 



Nereis veleronis differs from N. zonata Malmgren (1868, p. 164) in 

 that the posterior dorsal lobes are notably different, the dorsal edge 

 strongly convex, the lateral edge drawn out in a triangular lobe. 



Holotype.— AHF no. 28. 



Distribution. — Peru. In 5-16 fms. 



