688 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



CLAVELLOPSIS ROBUSTA (WUson). 

 Plate 49, fig. 182. 

 Clavella robusfa Wilson, 1912, p. 96, pi. 8, figs. 73 to 78. 



Host and record of sj^ecimens. — A single lot of six females with egg 

 strings was taken from the gill cavity of the brown rockfish, Sehas- 

 todes auriculatus, at Nanaimo, British Columbia. The species types 

 are in the collection of the National Museum and are numbered 

 39331, U.S.N.M. 



RemarTcs. — This species was fully described and figured in the 

 reference above given. It was then placed in the genus Clavella, but 

 accordmg to the new standards here estabUshed it must be transferred 

 to the genus Clavellopsis , because its second antennae are biramose, 

 mth a two-jointed exopod, and there are very short posterior proc- 

 esses, sunilar to those in laciniaia. 



There is need of the male of this species before the systematic 

 position can be finally determined. 



CLAVELLOPSIS PRODUCTA, new species. 

 Plate 50, figs. 185 and 186. 



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

 were obtained by the Bureau of Fisheries steamer Albatross from the 

 anal fin of Nematonurus goodei (Giinther), July 21, 1884, in the deep 

 Atlantic opposite Chesapeake Bay. One of these was badly injured 

 when obtained ; the other is made the type of the new species and is 

 numbered 43524, U.S.N.M. 



Specific characters of the female. — Cephalothorax in line with the 

 second maxillae, smooth, slender, and considerably shorter than the 

 trunk; head not enlarged, pointed anteriorly; no dorsal carapace; 

 trunk much elongated, slender, smooth, slightly enlarged at the 

 posterior end and smoothly rounded without ridges or processes of 

 any sort. First antennae indistinctly jointed, with an enlarged base; 

 second antennae biramose, the exopod short, one-jomted, and 

 bluntly rounded, the endopod longer, two-jointed, and tipped with a 

 short conical spine; mouth-tube broadly conical, projecting in front 

 of the anterior margin, but not as far as the second antennae; first 

 maxillae bipartite, the palp small and armed with a single seta; 

 second maxillae much swollen, transversely wrinkled, and fused 

 throughout their length, but with the demarcation plainly visible; 

 bulla small, black, and conical, with a broad, wing-like fold of skin 

 around its base; maxillipeds with a rather stout basal joint and a 

 slender claw, curved near the tip, and with a notch and tooth on its 

 inner margin near the center. 



Color (preserved material), a dark cinnamon brown. 



Cephalothorax and second maxillae, 8.40 mm. long, 0.60 mm. wide. 



