678 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



with a single seta; second maxillae fused entirely, but with the hne 

 of demarcation plainl}> visible; bulla relatively large and shapexl like 

 a wine glass; maxillipeds with a triangidar basal joint and a slender 

 curved terminal claw, with an accessory claw^ on its inner margin near 

 the center. 



Color (preserved material), a rich reddish-brow^n. 



Cephalothorax, 3.5 mm. long, 0.5 mm. wide. Trunk, 3 mm. long, 

 1.35 mm. wide. Second maxillae, 1.25 mm. long. 



(levis, smooth, aUuding particularly to the absence of all ridges 

 and processes at the posterior end of the truni.) 



3Iale. — Unknown. 



Remarlcs. — The Brotulid hosts are not obtained often enough to tell 

 how common these parasites may be on them. The species may be 

 recognized by the smoothness of the posterior end of the trunk and 

 by the pecuHar form of the first and second antennae. The direction 

 of the latter appendages ventrally instead of across the anterior margin 

 is peculiar and is readily seen in a ventral new of the head. 



CLAVELLA PINGUIS, new species. 

 Plate 47, figs. 156 to 161. 



Host and record of specimens. — Fifteen females with egg strings and 

 two males were obtained from the pectoral fins of " Ly codes hrunneus" 

 off the coast of New Jei-sey in the deep Atlantic. One female has 

 been selected as the type of the new species and numbered 43594, 

 U.S.N.M. The other specimens become paratypes and are numbered 

 8352, U.S.N.M. A secojid lot was obtained from the pectoral fins 

 of "Lycodes, brown sp.," taken in the deep Atlantic close to the 

 previous lot. There are three females, one very young and only 1.5 

 mm. in length; they are numbered 8351, U.S.N.M. 



A tliird lot, containing ten females, was obtained from the pectoral 

 fins of Lycodes frigidus, caught in the deep water off the coast of Nova 

 Scotia. They are numbered 39606; U.S.N.M. 



A fourth lot of two females was obtained from the same host off 

 Nantucket Island and are numbered 43587, U.S.N.M. 



A single female was obtained from the pectoral fin of a species of 

 Macrurus in the deep water south of Buzzards Bay, Rhode Island. 

 It is numbered 6074, U.S.N.M. 



Specific characters of female. — Cephalothorax slender, cyfindrical, 

 and sUghtly longer than the trunk; head not enlarged nor differ- 

 entiated from the neck; no dorsal carapace; trunk elliptical in out- 

 line, flattened dorso-ventraUy, much longer than wide, without a 

 genital process; external oviduct openings with deep grooves on both 

 the dorsal and ventral surfaces; egg strings cylindrical, about the 

 same length as the trunk; eggs small, in 8 or 10 longitudinal rows, 

 about 25 or 30 in a row. 



