THE GENUS ERETMOCARIS 367 



least seven distinct types of Eretmocaris larvae from the Atlantic. One of the Bermuda 

 forms is perhaps the same as that described by Brooks and Herrick, and may be identical 

 with E. stylorostris Bate. 



Species A. I (Figs. 36, 37) 



See Kemp, 1916, Rec. Ind. Mus. xii, p. 403, fig. 5. Hippolysmata ensirostris. 

 St. 701. 14° 39' N, 25° 51' W. Two specimens. 

 St. 709. 14^ 01' S, 36" 30' W. One specimen. 



Length 6-14 mm. 



Rostrum reaching end of eyestalk, with three dorsal teeth near end. Carapace with 

 large dorsal tooth and supra-orbital, antennal and pterygostomial spines. Abdominal 

 somites without spines, pleura rounded; somite 6 nearly three times as long as deep. 

 Telson shorter than uropods, without lateral spines and with 5+5 terminal spines, of 

 which spine 2 is the longest. 



Eyestalk shorter than eye, with large dorsal spine ; eye and stalk to length of body as 



I : 37- 



Peduncle of antennule reaching nearly to end of eye ; rami long, but broken. Flagellum 



of antenna about as long as scale. Legs all lost, the stumps increasing in size backwards 



and arranged in a semicircle, leg 1 widely separated, leg 5 closely apposed. Leg 4 with 



exopod. Pleopods present, small. 



These three larvae represent a younger stage than that figured by Kemp, which is no 

 doubt the last stage and has the rostrum very much longer and with numerous dorsal 

 teeth. 



Specimens of precisely the same form were taken by the ' Discovery ' at six stations 

 off the east coast of Africa. 



Species A. II (Figs. 38, 39) 



Eretmocaris stylorostris Bate, 1888, pi. xcv, fig. 3?. 

 Stenopus hispidus Brooks and Herrick, 1892, pis. ix, x?. 

 St. 709. 14° 01' S, 36° 30' W. One specimen. 



Length 6-i mm. 



Rostrum small, with one dorsal tooth. Carapace with small dorsal tooth and antennal 

 and pterygostomial spines; supra-orbital spine absent. Abdominal somites without 

 spines, pleura rounded ; somite 6 not much more than twice as long as deep. 



Telson three times as long as wide, without lateral spines: terminal spines 5 + 5, of 

 which 2 and 4 are longest. 



Eyestalk longer than eye, together nearly half length of body. 



Peduncle of antennule shorter than eye, about one-third length of body. Legs all 

 broken off, but stump of leg 5 larger than that of leg 4, which has an exopod. Pleopods 

 large. 



Bate's Eretmocaris stylorostris may be an earlier stage of this species. The species 



