10 Journal of Entomology and Zoology 
strongly arched; hesioniform. Because of the broken condition of the type the number 
of segments is uncertain, but is near seventy-five. 
Greatest width, exclusive of parapodia, 1.5 mm. 
Type—M. C. Z. 2, 150. 
Dredged August 27, 1917. 
Campesyllis_gen. nov. 
Like Streptosyllis in haying the pharynx strongly sinuous and unarmed and in 
lacking nuchal flaps such as characterize dmb/yosyllis. It differs from the former genus 
in having only composite setae and in having these of the ordinary structure, the 
appendage of a simple, fringed form not covered by a membrane. Eyes two pairs 
instead of three. Tentacular cirri two pairs. These, as also the tentacles and notocirri, 
short, articulated. Neurocirri attached proximally. 
Genotype.—C. minor sp. nov. 
Campesyllis minor sp. nov. 
The type of this small form is only 2.5 mm. long. The pharynx is strongly 
sinuous. The palpi are contiguous throughout and are fused for most of length 
though a median furrow or sulcus above and one below run to base; projecting for- 
ward; together they narrow distad, with outline triangular; shorter than prostomium. 
Eyes two pairs, well separated, subequal, forming a nearly straight transverse row a 
little in front of the peristomium. Median tentacle attached far back between posterior 
eyes; short, a little exceeding prostomium and palpi together. Lateral tentacles also 
short, each attached at cephaloectal corner with the prostomium bulging forward 
between them. ‘Tentacular cirri and notocirri also short, the latter in anterior region 
about equalling half the width of the body proper and not extending much beyond the 
tips of the setae; joints short, near fifteen or less in number. Neurocirri subcylindric, 
slender, reaching ends of parapodia. Setae transparent; end of shaft but little enlarged, 
its articular edge very oblique; appendage long and slender, the tip curved, the edge 
strongly fringed. Body ventrally flat, convex dorsally, strongly narrowed caudad. 
Taken in a sabellid colony. 
Type—M. C. Z. 2, 151. 
NEREID 
Nereis latescens sp. nov. 
Allied to N. vexillosa (Grube) but a much smaller species readily distinguish- 
able superficially through the presence of purplish markings on the prostomium and 
enterior segments, by the form of the appendages, and particularly by the presence on 
region V of the proboscis of a single large conical tooth such as is present in various 
cpitokes. The prostomium is marked above by a large purplish area germinate by a 
narrow median longitudinal yellow line. Eyes black. On the anterior segments, above 
on each side a transverse purplish stripe along anterior and one along posterior 
border and across the dorsal region, a shorter but broader stripe a little in front of 
the middle of segment. The body otherwise yellowish. Eyes exceptionally large, and 
those of each side very close together. ‘Tentacles close together, slenderly cylindrical, 
moderately narrowing distad, shorter than prostomium and not extending beyond end 
of proximal joint of palpi. Paragnatha in general as in vewillosa; area 1 with but a 
single tooth; II, II and IV with numerous teeth in a patch on each; V with a single 
exceptionally large tooth; VI with four teeth in a quadrangle; VII and VIII with teeth 
