218 NEW EUPHROSYNE-SPECIES. 



third gill, is about as loug as these ; the median one is 

 somewhat shorter. In front of the branchiae a doable row 

 of bifid bristles projects, partly stretching beyond their 

 tips ; in the median portion of the row some ringent bristles 

 are present, of the type of E. horealis. The neuropodium 

 is provided with rounded lips and carries a fascicle of bristles, 

 some of which are very elongated, having a length equal 

 to half the breadth of the body. 



Euphrosyne mucosa^ n. sp. 



At Station 109, in the Sulu-Archipelago, at a depth of 

 13 M., a small Euphrosyne was dredged, the upper side of the 

 body covered with much mucus and containing ripe ova. 

 The oblong oval body has a length of about 7 mm., whereas 

 its breadth measures 4 mm. (the bristles included). The bare 

 medio-dorsal field is narrow, its diameter being only one 

 eighth of the breadth of the body. The number of its segments 

 amounts to 27. The caruncle is rather broad and reaches 

 the anterior region of the fifth segment; it consists of a 

 thick, cylindrical, median ridge and two plane lateral lobes, 

 which are somewhat narrower. The eyes are not very large ; 

 in front of the dorsal ones the short, thick tentacle arises, 

 furnished with a small terminal joint and measuring a fourth 

 of the total length of the caruncle. The ventral eyes are 

 flanked by a small antenna. Each parapodium carries 

 a transverse group of eight stout branchial arbuscles, not 

 arranged in a single series; their short stem divides in 

 numerous cylindrical processes, which are not dilated at 

 the tip. The lateral dorsal cirrus, situated opposite to the 

 third gill, has about the same length ; the median cirrus 

 is somewhat shorter. In front of the branchiae a double 

 series of forked bristles projects, the longest of which extend 

 somewhat beyond their tips, whereas the shortest ones only 

 reach half the length of the gills; the forks of those bristles 

 are vitreous and impregnated with calcium carbonate. Among 

 them are numerous ringent bristles of the type of E. foliosa. 



r*<fotes Irom the Leyclon IMuseum, Vol. XXIII. 



