42 2 FAUNA HAWAIIENSIS 



specimens of the latter were described by me from Kew Gardens, where they had been 

 received from Barbados. In the collection of Sandwich- Islands worms before me there 

 are a number of specimens of this species found at Honolulu in earth imported from 

 China. Of these I have examined seven individuals. 



Their size presents no difficulty for identification. They vary from 99 to 140 mm. 

 The clitellum occupies segment 14 to about the middle of segment 16. In two 

 specimens I found setae to be limited to the i6th segment; in the others there were 

 setae on all the clitellar segments, but very few on 14 and 15. In one specimen the 

 numbers on the three segments beginning with 14 are 8, 3, 15 ; in another 2, 2, 10. 

 These figures agree broadly with my previous observations upon this species. 



In several cases I found that the setae upon the anterior segments of the body are 

 as in Aniyntas hawayanus larger than those posteriorly. Segments 3 — 8 appeared to 

 be thus distinguished. 



The arrangement of the genital papillae is as follows : 



There are either two or three in the neighbourhood of the male pores, sometimes 

 only one. They lie either in an oblique row or in the case where there are two, one 

 behind the other. There is in fact no difference here from the conditions which obtain 

 in haivayanus. 



In addition to these posteriorly placed genital papillae there are anterior papillae. 

 One individual had a pair on segment 7 ; another a median papilla on the same seg- 

 ment. There is here again no practical difference from A. haiuayanus. 



As to internal characters the prevalent number of spermathecae is three pairs 

 situated as are those of A. hawayanus. In one specimen only were there but two pairs 

 of these organs placed in segments 6, 7. The sperm sacs often, but not always, show a 

 constriction near to the free end, by which a small " knob " is divided off from the rest 

 of the sac. As in A. hawayanus there are at least often two pairs of egg sacs in 

 segments 13, 14. The spermiducal glands are long, occupying segments 17 — 21, as in 

 A. haivayanus, and as in that species there is no terminal " Kopulationstasche " into 

 which the duct of the gland opens. A character which seems to be peculiar to these 

 worms is the occasional duplication of the dorsal vessel. I found this in four out of 

 seven examples ; the doubling commenced at the 20th segment or thereabouts, and the 

 tube became single again about the 25th. The doubling was complete, the two halves 

 not uniting at the septa where they traversed those plates. Of these variable characters 

 there are only three which do not seem to occur in examples which have been referred 

 to A. hawayanus and A. bermudensis. These are : setae upon segments 14, 15 ; occa- 

 sional doubling of dorsal vessel ; knob-like processes of sperm sacs ; the presence of 

 only two pairs of spermathecae. Were these or some of these characters united 

 invariably together we might indeed separate the specimens as a different species ; but 

 they do not. The one example with spermathecae in 6 and 7 only had, it is true, no 



