340 Mr. A. E, Verrill on new American Phyllopod Crustacea. 



distinct, sharp teeth, extending from the articulation albout 

 half way to the base, and arranged somewhat obliquely ; se- 

 cond joint slender, regularly curved, tapering to a blunt point, 

 the inner edge minutely serrulate. Front simj)ly curved, with 

 no appendages. Antennse slender, scarcely more than half the 

 length of the basal joint of the claspers. Labrum long and 

 narrow; mandibles stout, strongly curved, bluntly pointed. 

 Caudal appendages slender lanceolate, rather small, with long 

 slender seta3. Egg-pouch much elongated, slender, subcylin- 

 drical, beaked or slightly bilobed at the end, the upper or 

 dorsal lobe longest, its basal portion with two small, rounded, 

 lateral lobes. 



A large male gives the following measurements : — 

 Breadth between outer extremity of eyes 3*46 millims. ; 

 diameter of eyes 'QQ ; length of basal joint of claspers 1*66, 

 breadth *71 ] length of second joint 1*29, breadth at its base 

 "46 ; width of mandibles at middle 'QQ ; length of caudal ap- 

 pendages '96, breadth at base "16 ; length of longest set« '84 

 to 1 millim. 



Colour of preserved specimens pale reddish, with dark green 

 intestine. Labrador, at " Indian Tickle," on the north shore 

 of Invuctoke Inlet ; abundant in a pool of fresh water (Dr. A. 

 S. Packard). 



Branchipus {Branchinecta) grcenlandicus, Verrill, sp. nov. 



A little stouter than the last ; the largest male is 17 millims. 

 long, exclusive of claspers, the abdomen being 10 millims., 

 including caudal appendages. Claspers similar to those of B. 

 arcticus, but more elongated, the basal joint less curved, and 

 the second joint longer, less regularly curved, tapering more 

 quickly at base and consequently more attenuated beyond the 

 middle, and with more slender tips, which are nearly straight. 

 The tooth on the inside of the first joint is rather more promi- 

 nent, but the teeth of the row along the inside are similar. Cau- 

 dal appendages stouter, tapering more rapidly. External male 

 organs slender, curved outward, swollen at base. The largest 

 female is not mature, and the egg-pouch contains no eggs ; it 

 is small, slender, elongated, subcylindrical, beaked at the end. 



The largest male gives the following measurements : — 



Breadth between eyes 3*20 millims. ; length of basal joint 

 of claspers 2*81, breadth '95 ; length of second joint 2*24, its 

 breadth at base '76 ; length of caudal appendages '86, width 

 at base '24 ,• length of setse '76. 



Greenland (Dr. Chr. Liltken). From the University Zoo- 

 logical Museum, Copenhagen. 



Of this species I have seen but fom* specimens, which were 



