516 



BTJLiLETIN 15 8, UNITED STATES NATIONAL MTJSEUM 



ReTnarks. — This parasite is apparently confined to deep-water 

 fishes off our Atlantic coasts and is not likely to be found anywhere 

 near shore. 



Genus CLAVELLODES Wilson, 1915 



Female. — Cephalothorax longer than trunk and reflexed against 

 the dorsal surface of the latter; head separated from the neck by 

 a well-defined groove, with or without a dorsal carapace. Trunk 

 depressed; no posterior processes, abdomen, or caudal rami; genital 

 process present or absent. First antennae slender, indistinctly seg- 

 mented; second antennae biramose, rami short and blunt; first 

 maxilla tripartite, the palp with a single seta ; second maxillae short 

 and either fused or separate; terminal claw of maxillipeds with 

 accessory claw and row of short teeth on inner margin near the tip. 



Male. — Head folded ventrally upon the trunk and the two fused 

 without any distinction of parts; general form ellipsoidal, the ante- 

 rior end squarely truncated and carrying the mouth tube, the appen- 

 dages, and the genital process, all of which point forward in line with 

 the long axis of the ellipse. First antennae indistinctly segmented; 

 second antennae biramose, endopod simple, exopod 2-segmented; first 

 maxillae like those of the female ; second maxillae larger and stronger 

 than the maxillipeds. A single species in the present area. 



CLAVELLODES RUGOSA (Krpiyer) 



Figure 305 



Anchorella rufjosa Ke0tee, Naturh. 



Tidsskrift, vol. 1, p. 284, pis. 2, 



3, 1837. 

 Clavellodes rugosa Wilson, Proc. 



U. S. Nat. Mus., vol. 47, p. 690, 



pi. 51, 1915. 



Occurr^ence. — Taken from the 

 gills of the wolf fish {Ana- 

 rJiichas lupus)., caught on 

 Georges Bank, July, 1922. 



Dlstrihutioji. — English coast 

 (Baird, White, T. Scott) ; Dan- 

 ish coast (Kr0yer) ; Belgian coast (Beneden) ; Skager Eak (Olsson) ; 

 Scottish coast (T. Scott) ; Gloucester, Mass., Casco Bay, Me. 

 (Wilson). 

 Color (preserved material). — Body grayish yellow; eggs orange. 

 Female. — Cephalothorax flexed against the dorsal surface of the 

 trunk ; head depressed and enlarged on either side into a lateral lobe. 

 Trunk also depressed, with its entire surface thrown up into ridges 

 separated by deep grooves ; anterior and posterior margins reentrant. 



FiGDEE 305. — Clavellodes rugosa: a. Female, 

 dorsal ; i, male, lateral 



