COPEPODS OF THE WOODS HOLE REGION 511 



biramose at its tip, short and stout ; attachment bulla small and dark 

 brown in color. Total length, 6-7 mm. 



Male. — Unknown. 



Remarks. — The host named above is a native of the West Indies 

 and seldom wanders as far north as the Massachusetts coast, where 

 this one was captured. The figure here given is one made by M. T. 

 Thompson, to whom Mr. Edwards turned over the specimens for 

 study. With several other sketches made by Thompson and the 

 notes which he left, the identity of the species is established beyond 

 any reasonable doubt. 



Genus CHAROPINUS Kr^yer, 1863 



Female. — Head more or less distinctly separated from the trunk, 

 with or without a carapace, usually flexed backward at right angles 

 to the trunk or even against its dorsal surface. Trunk enlarged and 

 often flattened, usually with a pair of posterior processes dorsal to 

 the ovisacs; no genital process, abdomen, or caudal rami. Two pairs 

 of antennae and four pairs of mouth parts; second maxillae some- 

 times joined at their tips with a bulla or a chitin rod, sometimes 

 separate, their tips enlarged into various shapes. 



Mole. — ^Anterior portion of head at right angles to posterior por- 

 tion and the thorax ; no carapace ; thorax segmented with an enlarged 

 genital segment; abdomen well defined, segmented, and tipped with 

 caudal rami. First antennae 3-segmented; second antennae bira- 

 mose and usually chelate; first maxillae tripartite, the palp with 

 two setae ; second maxillae and maxillipeds some distance behind the 

 other mouth parts, close together and separated by a groove. A 

 single species here. 



CHAROPINUS BICAUDATUS (Kr0yer) 



FiGTJEES 300, 6, c; 301 



Lernaeopdda hicaudata Kr0yer, Naturh. Tidsskrift, vol. 1, p. 275, pi. 3, fig. 11, 



1837. 

 Charopinus Mcaudatus Wilson, Proc. U. S. Nat. Mus., vol. 47, p. 656 ; pis. 41, 42. 



1915. 



Occurrence. — Females with attached males were taken from the 

 nostrils of the spiny dogfish {Squalus acanthias) at Woods Hole by 

 Dr. H. M. Smith in August, 1922, and by the present author in 

 July, 1923. 



Distribution. — Danish coast (Kr0yer) ; Belgian coast (Beneden) ; 

 Mediterranean (Kurz, Valle, Carus) ; British seas (Bainbridge, 

 T. and A. Scott, Norman and Brady) ; Casco Bay, Me. (Wilson). 



Color. — Body a uniform grayish white. 



