ii6 REPORT OF NEW JERSEY STATE MUSEUM. 



pad. Terminal claw large and stout, armed on outer edge with 

 two large accessory spines, one near basal and other at center. 

 First miaxillipeds with stout basal joint and short slender ter- 

 minal joint, with two accessory claws on inner edge close to 

 base of terminal claw. Ventral of these two claws more than 

 twice size of dorsal. Second maxillipeds much enlarged, rela- 

 tively more so than in female, armed with stout well-developed 

 terminal claw shutting down against group of three tuberculated 

 knobs placed side by side on basal joint. Color as in female, 

 except without pigmient spots or blotches and body quite trans- 

 parent. Length 7.23 mm. 



Remarks. — The above description of the female is from ma- 

 terial collected by Mr. Witmer Stone at Point Pleasant about 

 twenty-five years ago. Twelve examples, all females, were se- 

 cured at that time, and though the host is not given it very 

 likely may have been some shark, such as Mitstelns canisf The 

 account of the male as given above is from Wilson's monograph. 

 Wilson lists the following sharks as hosts for the species: 

 Carcharodon carcharias, Carcharias littoralis, Miistelus canis, 

 Bulamia obscara, Lanina cornubica and Scoliodon ierroc-novce. 



Genus PERISSOPUS Steenstrup and Liitken. 



Perissopus Steenstrup and Liitken. Kon. Dansk. Vid. Sels., (5) V, i860, p. 393. 

 Type Perissopus dentatus Steenstrup and Liitken, first species, designated 

 by Wilson, Proc. U. S. Nat. Mus., XXXIH, 1908, p. 354. 



Lepidopus (nee Gouan 1770) Dana, Proc. Amer. Acad. Art. Sci., 1843, p. 60. 

 Type Lepidopus armatns Dana, monotypic. 



Female. — Carapace wider than long, narrowed anteriorly, and 

 short posterior lobes sometimes almost lacking. Frontal plates 

 narrow, but distinct, with broad and well-defined median incision. 

 Eyes three in number, placed nearly in a row, and middle one 

 the smaller. Three free thorax segments, each with pair of 

 dorsal plates, first pair lateral and oblique, second median and 

 nearly horizontal, and third largest, extending entirely across 

 body. Genital segment considerably larger than carapace, evenly 

 rounded anteriorly, almost squarely truncated posteriorly, with 

 short and acute spines at corners and a wide median incision. 



