194 Memoirs of the Indian Museum. [Voi,. I, 



than twice as long as the main pouch, and is coiled in a different manner in the 

 different spermathecse of the specimen examined. 



Hab, — South Andaman, Wimberleyganj, Port Blair, in dense forest 20' 

 to 60' above sea-level ; B. B. OSMASTON leg., io-xii-06. 



Remarks, — Pheretima osmastoni seems to be dlliçià to Ph. hur char di, MICHI^SN., 

 from Sumatra. It differs from the latter in the situation of the copulatory cushion, 

 which is postclitellar in Ph. hurchardi, and in different points of the internal 

 anatomy, for instance in the thickness of certain septa, the shape of the seminal 

 vesicles and spermathecae, and in the existence of accessory glands in the 

 vicinity of the prostates. A re-examination of the type specimen of Ph. hurchardi 

 convinced me that there are no real grape-like accessory glands in this species. 

 There are near the prostates, more exactly between them, only those small, shortly- 

 stalked glands that correspond with the external copulatory pouch situated on the 

 i8th segment in this species. These small copulator}^ glands form a median ventral 

 circular group, the outline of which coincides with the outline of the external copula- 

 tory pouch. These glands are homologous with the copulatory glands found in the 

 anteclitellar region of Ph. osmastoni in the segments which bear externally the copula- 

 tory pouches. 



Another form closely allied to these two is PÄ. andamanensis , MICHI/SN., described 

 below. It is distinguished from both by its smaller size, by the absence of copula- 

 tory cushions, and by the structure of the spermathecse. Ph. andamanen- 

 sis is provided with only one pair of accessory glands, which lie just before 

 the prostates and differ widely in structure from those of Ph. osmastoni. These 

 glands have in Ph. andamanensis rather more the appearance of prostates in their 

 internal structure. 



Pheretima andamanensis, Michi^sn. 



(Plate xiii, fig. 25.) 



Ph. a , MICHAEI.SBN, in Mt. Mus. Hamburg, xxiv, p. 164. 



Present three specimens. 



External Characters, — Dimensions of two mature specimens : I^ength 

 108 and 120 mm., greatest thickness 6 and 6^ mm., number of segments ca. no. 



Colour : Dorsally dark brownish to violet-grey, ventrally yellowish grey. 



Head epilobous (about f ). Prostomium small, hinder appendix of prostomium 

 nearly as broad as the prostomium, with parallel borders, open behind. 



S et 36 a little enlarged in the anteclitellar region. Circles of setae nearly con- 

 tinuous, only the median dorsal distance somewhat larger than the neighbouring dis- 

 tances. Setœ placed somewhat closer together ventrally than dorsally. Number 

 of setae : 32-v, 45-x, 52-xii, 58-xix, 54-xxvi. 



Dorsal pores distinct only behind the clitellum (first in the intersegmental 

 furrow 12-13 •'* )• 



Clitellum ring-shaped, occupying segments 14 — 16 (=3), with setae on all 

 the three segments. 



