EULEPIS MALAYANA. 



165 



Though already five species of the genus Eulepis (E. 

 hainiferaQi'.^ Wijvillei Mcliit., challengeriae Mclnt., fimbnata 

 Treadw., splendida Treadw.) have been described, yet 

 there still reigns a good deal of uncertainty about its 

 real characters; therefore I was very glad to meet among 

 the Siboga-collection with a couple of specimens of this 

 rather rare genus. Unfortunately the largest specimen is 

 in an indifferent state of preservation ; it measures 20 mm. 

 in length and has 37 seg- 

 ments. The other one has 

 a length of only 15 mm., 

 with 34 somites. The head 

 is rounded, without eyes ; 

 the paired antennae arise 

 as two pointed, wedge- 

 shaped processes, lying 

 closely to each other, from 

 under the front of the head. 

 The conical tentacle, ari- 

 sing from the middle of the 

 dorsum of the head, scar- 

 cely reaches with its tip 

 half the length of the an- 

 tennae ; the tentacle as well as the antennae bear a dark spot 

 on the middle of the dorsal side. The palps are conical, smooth, 

 nearly twice as long as the antennae and not extending 

 much beyond the tentacular cirri. There are 12 pairs of 

 elytra, whitish, scmitranslucent, with a notch in the exter- 

 nal margin; the anterior five ones are rounded quadran- 

 gular, the other ones arc elongated, extending over more 

 than one segment. The small specimen possesses only 11 

 pairs of elytra and, probably, it is not full-grown. The last 

 elytron even extends over seven segments and therefore 

 covers a great part of the posterior body-region. The elytra 

 are situated on segment 2, 4, 5, 7, 9—21, and 24, as 

 mentioned by TreadwelP); the posterior elytron therefore 



1) The Polychaetous Annelids of Porto Rico: Bull, of tho U. St. Fish 

 Commission, Vol. XX, Part 2, 1903, p. 181. 



Notes from the Leyden IMuseum, Vol. XXX.V. 



