EARTHWORMS 419 



margin curving upwards and forwards like the lobe of the ear. But in one example the 

 gland was quadrangular though only occupying four segments and deeply incised in 

 correspondence therewith. 



The spermathecae are two pairs and lie in segments 7 and 8, but open on 7, 8 ; 

 8, 9. The oval pouch has a moderately long duct to which is appended a small twisted 

 diverticulum which is sometimes longer and sometimes shorter. 



We can extract from the foregoing the following definition of the species : 

 Size small, 100 mm. ; number of segments 105. Dorsal pores from 11, 12. 

 Number of setae per segment up to 53. Clitellum 14 — 16, without setae. 

 No papillae. Septum 8/9 missing. Caeca present. Last heart in 13. 

 Sperm sacs 11, 12. Spermiducal glands not very large; duct without end sac. 

 Spermathecae 7, 8, with twisted tubular diverticulum. 



Remarks. Dr Michaelsen has put forward grounds for believing that this 

 species is really Dr Horst's Amyntas annidata. I myself suspected a possible identity. 

 Dr Horst's original description of annulata, written some years ago when there was 

 no difficulty in distinguishing from each other the very few species of the genus at 

 that time known, was hardly complete enough for present requirements. He gives me 

 moreover by letter good reasons for denying the identity. 



Nor is there much change required to derive this form from the prevalent ^;;/;'«/'«5- 

 hawayanus. I desire again to refer in connection with this possibility to a species 

 described by myself some years since as Perichaeta hesperidtini. That species, two 

 individuals, arrived together with a form which I shall refer to here, barbadensis. 

 The worm differs however from barbadensis (I have satisfied myself by a renewed 

 examination) in a number of points. The clitellum begins and ends sharply at the 

 boundary lines of segments 13, 14, and 16, 17, and has no setae. The spermathecae 

 are in segments 8, 9, or at any rate open on to the boundary lines 7, 8 ; 8, 9. The 

 pouches differ from those of haivayamis in having much coiled diverticula ; the duct of 

 the spermiducal gland thins towards its end, is longish and rather curved and has not 

 really a terminal bulbus as I said in my original description. I have since met with 

 other examples of the same worm from Hong Kong in a bottle containing also examples 

 of barbadensis. I have examined four of these, all that I had. They have no setae on 

 * the clitellum, which commences and ends "sharply." The length is from 80 — 100 mm, 

 There are no genital papillae nor are there .setae upon any segment of the clitellum. 

 The last heart is in segment 13 as is usual ; the caeca are quite normal in position and 

 present no special features of interest. The sperm sacs have a constricted-off free end 

 as in so many forms. The spermathecae are two pairs and lie in 8 and 9 or at least 

 open in the intersegmental grooves 7, 8 ; 8, 9. The diverticulum of the pouches is only 

 of moderate length — not so long or not longer than the pouch — and is more or less 



