54 



RATHBUN 



carina behind the middle of the carapace, armed with 9 movable spines, 

 four of which are on the carapace (the hinder one inserted very slightly 



behind the middle) and 

 five on the base of the 

 rostrum; i subterminal 

 immovable spine ; lower 

 margin armed with n 

 immovable spines. 



Antennular peduncle 

 extending to middle of 



FIG. 17. Pandalopsis longirostris. Station 3316. a. Side of , . . 



carapace (natural size). b. Acicle (X a), c. Chela (X 3D- SCale. Scale as long aS 

 d. Telson (X 2). i 



carapace. Antennal pe- 

 duncle reaching to middle of second antennular segment. Maxillipeds 

 reaching almost to end of scale, very stout and hairy. The first pair 

 of pereiopods overlaps the basal fourth of the last joint of the maxilli- 

 peds ; second pair extending beyond acicle by length of chela, carpus of 

 21 joints, chela equal to the seven adjoining segments, fingers almost 

 as long as palm ; third pereiopods extending beyond the acicle by the 

 length of the dactylus and two thirds of the propodus. 



Sixth segment of abdomen two and a half times as long as wide; 

 telson broader than in P. aleutica. 



Dimensions. Male, length 112 mm., carapace and rostrum 59 mm., 

 rostrum 41 mm. 



Distribution. Off Iliuliuk Harbor, Unalaska, 309 fathoms, station 

 3316, Albatross, 2 males (one without rostrum). 



PANDALOPSIS DISPAR Rathbun. 



Plate i, fig. 2. 

 Pandalopsis dispar RATHBUN, Proc. U. S. Nat. Mus., xxiv, 902, 1902. 



Surface very finely and closely punctate. Rostrum two to two and a 

 half times the length of the rest of the carapace, arched over the eyes, 

 the remainder slightly ascending. Median crest occupying two thirds 

 the length of the carapace, posterior spine at the anterior third, spines 1 6 

 to 21, three or four of which are on the carapace, spines closely placed 

 on the arch, distant on the remainder of the rostrum. Inferior spines 9 

 to 15, extremity bifid or sometimes trifid. Antennal spine long and 

 slender ; pterygostomian spine minute. 



Eyes very large, with a very small but distinct ocellus outside the 

 corneal area. 



Antennal peduncle reaching two fifths the length of antennal scale; 



