NEW EUPHROSYNE-SPECIES. 219 



The neuropodium has au ear-shaped antei'ior lip and con- 

 tains a fascicle of bifid bristles of different length, but not 

 stretching far beyond the gills. 



Euphrosyne hystrix, n. sp. 



Near Sailoes ketjil with the towuet two small specimens 

 were collected of an Euphrosyne-species, closely allied to 

 E. ajjinis. The short oval body measures S'/g mm. in length 

 and about 2 mm. in breadth. The bare medio-dorsal field 

 is very narrow, hardly visible by the bristles from both 

 sides extending over it and crossing each other. The number 

 of its segments amounts to 29. The caruncle is rather broad 

 and reaches the fifth segment; its median keel hardly ex- 

 tends beyond the lateral lobes. There are large dorsal and 

 ventral eyes; the unpaired conical tentacle, inserted between 

 the former of them, has a short terminal joint and does 

 not stretch far beyond the eyes. Each parapodium carries 

 seven branchial arbuscles, with a short stem, dichoto- 

 mously dividing in numerous tapering processes, not dilated 

 at the tip. In front of the branchiae a series of stout, bifid 

 bristles projects from the dorsum, the longest, median ones 

 bending over the bare dorsal field ; among them only a 

 single ringent bristle could be detected, of the type of E. 

 foliosa. The neuropodium has a rounded triangular anterior 

 lip and contains a fascicle of bristles, some of which are 

 very elongated, equal to half the breadth of the body. 



Euphrosyne ajffinis, n. sp. 



At Station 40, near the Paternoster-islands, among the 

 swarm of E. sióogae, some individuals of an other pelagic 

 species were found, characterized by a slender body, tapering 

 at its anterior and posterior extremities. The length of 

 the largest specimen is S^/g mm., its breadth 2^/3 mm. 

 (the bristles not included). The bare medio-dorsal field is 

 rather broad, almost a third of the total breadth. The 



Notes from the Leyden M.usetitn, Vol. XXUI. 



