NO. 11(14. rMlASITIC COPEPODS—CALIGID.E—WILSOX. 603 



First maxilla? short and strongly curved, the base oidy slighth^ 

 (Milaroed; second pair longer than the proboscis, straight and acu- 

 minate, with a small tooth on the inner margin near the center. 



Terminal claw on the second maxillipeds bent nearl}^ into a semi- 

 circle. Furca short and wide, the branches longer than the base, 

 straight and divergent. Claws at the tip of the hrst swinuning legs 

 moderately long, and all, together with the seta at the distal corner, 

 the same length. Branches of the second legs longer than usual, the 

 exopod wnth long and pointed spines. Kami of the third legs large 

 and close together, the spine at the base of the exopod large and 

 strongly curved. Fourth legs four-jointed, with hve spines, all 

 .slightly curved, the one at the tip of the second joint longer and 

 curved more than the others, the rest about equal. 



Total length 4.5 mm. Length of carapace 2 mm.; widtli of same 

 l.i) mm.; length of genital segment 1.4 mm.; length of abdomen 

 0.9 mm. 



Color not given. 



{/'.soni/,r, I'ffog^ equal and ovv^^ a claw.) 



This species is based on a single example, which is evidently a 

 female although it lacks the Qgg strings. It was taken from the gills 

 of the great barracuda, Sphyrxna harracadaiyVdXh?i\xm)^ in the West 

 Indies. 



CALIGUS THYMNI Dana. 



Plate XV, figs. 178, 179. 



Cali;/us tliymul Dana, 1852, p. 56. — Dana, 1852, p. 1.353, pi. xciv, fig. 3, a-c. — 

 T. Scott, 1894, p. 129, pi. xiv, fig. 21.— Bassett-Smith, 1899, p. 451. 



FriiKilc. — Carapace oblong, not narrowed anteriorly, the length one 

 and a half times the width. No emargination at the center of the 

 frontal i)lates; lunules elliptical and not prominent. A short seta on 

 the frontal margin on either side about half way between the lunule 

 and the center. E^^es deep red on a black background. Free segment 

 short and wide. Genital segment oblong, the sides div^ergent, widest 

 posteriori}', where it is about twice the width of the abdomen; poste- 

 rior angles prominent and tipped with setse. Abdomen longer than 

 the genital segment, two-jointed, with the basal joint about half the 

 length of the terminal; anus prominent. 



Anal laminte small, tilling out the posterior angles and hardl}' pro- 

 jecting be^'ond the anus. The three plumose sett« wdiich they carry are 

 as long as the last joint of the abdomen, and do not diverge, as is many 

 species, but are parallel. 



Egg tubes a little narrower than the abdomen, longer than the 

 entire body, each containing 40 eggs. 



First antenna? small, terminal joint very slender and tipped with setffi 

 as long as the joint itself. Second antenntv of moderate size with a 



