214 NEW EUPHROSYNE-SPECIES. 



enlarged eyes, of elongated bristles in the neuropodium and 

 of a transparent body show a marked pelagic character *), 

 the other species of this genus having a more sedentary 

 manner of living. As proved by the table added hereafter, 

 the number of known species now amounts to twenty-six. 



Euphrosyne maculata, n. sp. 



A single specimen at Station 296, Noimini, South coast 

 of Timor. 



A pelagic annelid with a slender body, measuring 25 mm. 

 in length and 7 mm. in breadth. The number of its seg- 

 ments amounts to 40. The bare medio-dorsal region is very 

 narrow, only I'/g nam. broad. The caruncle reaches to the 

 middle of the fifth segment and carries at its dorsal and ventral 

 sides a pair of rather large eyes. The median tentacle, arising 

 between the dorsal eyes, is furnished with a short terminal 

 joint and measures but one fourth of the total length of the 

 caruncle ; the ventral eyes are flanked on each side by a 

 short antenna. Each parapodium is provided with twelve 

 branchial arbuscles; they consist of a short main stem, that 

 is marked with a black spot and dichotomously divides into 

 numerous branches, which are not dilated at the tip. The 

 lateral cirrus is situated between the second and third 

 branchiae (counted from de medio-dorsal line) and is only 

 a trifle shorter than these ; the median cirrus, though con- 

 tracted, appears to be somewhat shorter and carries also 

 a black spot like the gills do. A transverse row of bifid 

 bristles in front of the ten median branchiae, most of them 

 shorter, some as long as these ; among them some ringent 

 bristles of the type of E. foliosa ^). The neuropodium has 



1) CauUery et Mesnil, les Formes epitoques et revolution des Cirratuliens, 

 Ann. Univ. Lyon, fasc. XXXIX, 1898, p. 174. 



2) I think we can recognize two kinds of the remarkable serrated bristles, 

 that characterize the genus Euphrosi/ne: some of them (as in E. borealis) not 

 much deviate from the common bifid bristle, by having both limbs of the fork 

 only slightly bent and thickened, while in others (as in J?. /ü//om) the shortest 

 limb of the fork is more or less club-shaped and the longest one strongly 

 curved and enlarged. 



JSotes from the Leyden IVIuseum, A^ol. XXIII. 



