NEW EUPHROSYNE-SPECIES. 215 



an auricular anterior lip and is furnished with a fascicle 

 of forked setae, some of which are slender and much 

 elongated, extending far beyond the branchiae. 



Euplirosyne obiensis^ n. sp. 



On the reef near Laiwui (Obi major) a rather large 

 Euphrosyne was collected, that I first thought to be iden- 

 tical with i?. Mastersii from Darnley-island, described by 

 Haswell; it measures 30 mm. in length and 10 mm. in 

 breadth. The number of its segments amounts to 41. The 

 bare median field of the dorsum is a trifle smaller than 

 its lateral parts, which are covered with branchiae, and shows 

 in the middle of each segment a spot of dark pigment. 

 The elongated, oval caruncle extends over five segments 

 and carries an elevated keel in the middle ; in front of it 

 a short, thick antenna is inserted, measuring only twice 

 the diameter of the eyes. Each parapodium carries a series 

 of nine arborescent gills, consisting each of a short, main 

 stem, rapidly dividing into numerous branches, which are 

 dilated at the tip. The lateral dorsal cirrus is situated between 

 the second and third gill, having about the same leugth 

 as these; the median one is blunt and somewhat shorter. 

 The series of dorsal bristles extends only till in front of 

 the fourth branchia ; the ringent setae, of the type of E. 

 foliosa^ are gathered in a median group. The neuropodium 

 carries a fascicle of stout, bifid bristles, of which the short 

 spur measures only one fifth of the long fork. 



Euphrosyne longesetosa, n. sp. 



At Station 310, 8° 30' S, 119° 7' 5 L. E., at a depth of 

 73 M. a small Euphrosyne was dredged, obvious by the 

 enormous length of its dorsal bristles. The oval body has 

 a length of about 10 mm., its breadth being 6 mm. (the 

 bristles included). The number of its segments amounts 

 to 24. The bare medio-dorsal region measures about one 



Notes from the Leyden IMviseum, "\'^ol. XXIII. 



