NO. 2063. NORTH AMERICAN PARASITIC COPEPODS— WILSON. 677 



8 longitudinal rows, about 10 or 12 eggs in a row. First antennae 

 slender, indistinctly three-jointed, much swollen at the base, narrow 

 at the tip, with but one or two setae; second antennae uniramose, 

 with a slender, conical terminal joint, and a stout basal portion, 

 reinforced with chitin ribs; mouth tube broad, but not projecting 

 beyond the first maxillae; the latter bipartite at the tip, with a minute 

 palp, bearing a single seta; second maxillae short, stout, and thor- 

 oughly fused for their entire length; bulla minute and spherical; 

 maxilhpeds with a long and fairly stout basal joint and a slender 

 terminal claw, without spines or accessory claws; these maxillae are 

 removed behind the mouth tube so that they do not overlap the other 

 mouth parts. 



Color (preserved material), dark cinnamon brown; egg strings red. 

 Total length, excluding egg strings, 4.5 mm. Length of cephalo- 

 thorax and second maxillae, 3 mm. Width, 0.5 mm. Trunk, 

 2.1 mm. long, 0.9 mm. wide. Egg strings, 1.6 mm. long; 0.5 mm. 

 wide. 



(insolita, unusual, alluding to the absorption of the genital process 

 into the trunk.) 



Male. — Unknown, 



Remarks. — The host of this parasite is very rare as far south as 

 Cape Cod, which would account for the limited number of specimens 

 and the fact that it has never been discovered before. 



CLAVELLA LEVIS, new species. 

 Plate 47, figs. 154 and 155. 



Host and record of specimens. — Two females without egg strings 

 were obtained from the pectoral fins of a "rare Brotulid" by the 

 steamer Blake of the United States Coast Survey. The better of 

 the two is made the species type with the number 43553, U.S.N.M. 

 The other becomes a paratype, with the number originally given 

 it, 6086, U.S,N.M. 



Specific characters of female. — Cephalothorax slender and cylindri- 

 cal, a Uttle longer than the trunk; head not enlarged, pointed ante- 

 riorly, without a dorsal carapace; second maxillae in line with the 

 cephalothorax and about half as long; trunk egg-shaped, about twice 

 as long as wide and perfectly smooth, without ridges or processes of 

 any kind. First antennae ^^-ith the basal joint strongly swollen, the 

 two terminal joints cylindrical, bent at an angle \\-ith the basal joint 

 and tipped with two spines; second antennae uniramose, the joints 

 diminishing rapidly in size from the base toward the tip. These 

 antennae are not bent across the frontal margin as is usual, but are 

 turned ventrally, the last joint bent inward and tipped with a tuft of 

 setae. Mouth tube broadly conical, projecting a httle beyond the 

 anterior margin; first maxillae bipartite, with a small palp armed 



