296 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Ovigers: Female, about as long as the palpi; 1st joint short, broad; 

 2nd comes off from the side of the 1st; 2nd and 3rd about equal and 

 longer than 1st; 4th and 5th about equal and longest of all; 6th to 10th 

 successively smaller; 10th verj^ small and rounded; 7th, 8th, 9th, and 

 10th, each with 2 denticulate spines; 4th and 5th, few small hairs. 



Male oviger nearly twice as long as the oviger of the female. First 

 joint square, 2nd longer, 1st and 2nd broader than the following joints; 

 3rd longer than 2nd; 4th and 5th about equal, longer than 3rd; 6th to 

 10th successively smaller, except 9th, which is longer than 8th; 10th 

 small, with 2 denticulate spines; 9th has one spine at least; 4th to 7th 

 armed with short backwardly projecting spines in rows, while the follow- 

 ing joints for a few divisions have 2 or 3 small hairs each. The end of the 

 oviger is strongly curved inward. Egg masses rather small, globular, one 

 mass to each oviger. 



Ambulatory legs: Rather short. Second coxa not much longer than 

 1st and 3rd. First coxa has 3 tubercles on its dorsal edge, each with spines. 

 Femur shorter than the coxal region and broad in the female, where it is 

 equal to the width of the proboscis. Projecting distally from the dorso- 

 distal border is a long conical extension bearing a strong spine. Tibial 

 joints 1 and 2 are equal, thick, more or less armed with spines which are 

 longer on the dorsal side. First tarsal joint is small, subtriangular, with 

 short even spines. Tarsus 2 is moderately strong, arched with rows of 

 slender spines dorsally and on the sides, and with 3 strong spines at the 

 heel and a row of very short ones along the sole. The claw is about i^ the 

 length of the 2nd tarsal. The auxiliary claw is well developed and about 

 half as long as the large claw. 



In the male the genital projection on the ventrodistal area of the 

 2nd coxa of the 2 last legs is thumblike and with 1 or 2 slender hairs. In 

 the female the genital openings are on all 4 pairs of legs; length, 4; 

 spread, 16; about the same size for both sexes. 



Immature forms, but little smaller than the adults, have chelate 

 chelifori and very short ovigers. 



Cole's specimens were 2 males, 3 females, and 2 young from St. Paul's 

 Island, Pribilofs; 1 male, 3 fem.ales, 2 young from Dutch Harbor, 

 Unalaska. 



This is distinguished from other species by its elliptical proboscis and 

 long knobbed chelifori and caudal segment. 



One female. Station 1177-40, north of Santa Barbara Island, Sept. 9, 

 1940, 37 fms. 



