NO. 2063. NORTH AMERICAN PARASITIC C0PEP0D8— WILSON. 679 



First antennae short and very indistinctly jointed; second antennae 

 uniramose, turned down across the frontal margin, wdth the tips 

 meeting at the midline; mouth tube wdde and with its tip overlapping 

 the second antennae; first maxillae long and slender, tripartite, the 

 outer ramus much shorter than the others; palp short and armed ^\dth 

 a single seta; second maxillae short and completely fused, tapering 

 rapidly toward the tip; bulla small and spherical; maxillipeds with a 

 long basal joint and a slender terminal claw, curved at the tip and 

 carrying an accessory claw on its inner margin. 



Color (preserved material), a deep brownish-yellow, eggs orange. 



Cephalothorax, 4 mm. long, 0.5 mm. wide. Trunk, 3.5 mm. long, 

 1.5 mm. wide, 1 mm. thick. Egg strings, 3.5 mm. long, 0.62 mm. 

 thick. 



Specific characters of male. — Body egg-shaped, wddest posteriorly; 

 mouth tube long and pointed forward in line with the body axis; 

 first antennae removed some distance from the dorsal margin and 

 apparently only two-jointed; second antennae with one-jointed 

 rami, both of which are armed with short processes rather than with 

 spines; first maxillae long and slender and bipartite, without a palp; 

 second maxUlae and maxillipeds of the usual form. 



Color (preserved material), a grayish-yellow. 



Total length, 0.4 mm. Greatest width, 0.25 mm. 



(pinguis, smooth, sleek.) , 



Young female.— CeiphalothorBJi folded back against the dorsal sur- 

 face of the trunk and one- third longer than the latter; head con- 

 siderably enlarged through the bases of the maxillipeds; second max- 

 illae in line with the cephalothorax and one-third the length of the 

 latter, from which they are separated by a well-defined groove; bulla 

 spherical, on a long pedicel; trunk cylindrical, the same diameter 

 throughout, and perfectly smooth, without grooves or processes. 



Remarks. — This species seems fairly common on the deep water 

 forms of Lycodes. It may be distinguished by the long and narrow 

 trunk, the absence of a genital process, and the deep grooves at the 

 bases of the egg strings. 



CLAVELLA SQUAMIGERA, new species. 

 Plate 48, figs. 162 to 1G6. 



Host and record of specimens. — An adult female without egg strings 

 was obtained from the tail fin of Antimora viola, August 5, 1884, in 

 the deep water of the Atlantic opposite Atlantic City, New Jersey. 



The cephalothorax of a second specimen was also obtained, but 

 the trunk in some way was destroyed. The perfect specimen is 

 made the species type and is numbered 39602, U.S.N.M. 



