502 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXIV. 



Intestinal diverticula. — Simple originating in xxvi segment and coming for- 

 wards up to the segment xxii. 



Testicle sacs in x and xi separate from the lateral seminal visicles in seg- 

 ments xi and xii. The seminal vesicles are compact and not much lobulated. 



Prostate rjland occupies segments xvii — xxi. Prostatic duct thick and 

 straight opening in segment xviii to the exterior, into it open the five 

 primary prostatic ducts as in Pheretima haioayana typical form. No acces- 

 sory prostates could be made out. The vas deferens in connection with the 

 seminal funnel in the xi segment curls over the one from the septa x, and 

 passes back external to it. The two vasa deferentia open separately close 

 to each other into the thick prostatic duct. 



Spermathecce two seldom, three pairs in segments vi and vii or in vi — viii. 

 The ampulla is of an inverted pyriform shape with a notch on one side. 

 The duct is well marked and slightly smaller in length than the ampulla. 

 The diverticulum is smaller in than the ampulla and arises at a much 

 higher level from the duct than in Pheretima haioayana. (Fig. V, Plate II.) 



Remarks. — There has been a good deal of difference of opinion as to whether 

 Pheretima barbadensis should be considered as a subspecies of the typical 

 form of Pheretima hawayana or as a distinct species. Stephenson discus- 

 sed the whole fully in his papers ''On a collection of Oligochgeat 

 mainly from Ceylon " in the " Spolia zeylanica" (4) and in "Contributions 

 to the fauna of Yunan " (3) and arrived at the conclusion that Pheretima 

 barbedensis should be classed as a subspecies of the typical form Pheretima 

 hawayana. But from the very large number of forms collected in Lahore 

 and examined I have to conclude that these two should be classed as two 

 distinct subspecies. The chief points in which the barbadensis form differs 

 the from typical hawayana are : — 



Unbroken rings of setae, clitellum occupying the whole of three segments 

 without sette usually and being well marked owing to being lesser in 

 diameter than the rest of the body. (Fig. 8, Plate 1.) Absence of </emfa/ 

 papillcs in the interval between the male pores and on segments xvii and xix 

 and the corresponding absence of the accessory glands internally ; the 

 genital papillae surrounding the male pore being scattered and not fused 

 ( as in Pheretima hawayana ) to form the oval area, the prostatic duct being 

 straight and not curved in an shaped manner ; the diflference in the shape 

 of the sfermathecal ampuUse and the point of origin of the diverticulum and 

 in the intestinal caiC(S being simple. 



While working for some time at the Indian Museum, Calcutta, I examined 

 the Yunan and Ceylon specimens mentioned by Stephenson in his papers 

 ;^4, 5) and I find that the abovementioned opinions are in no way effected 

 by their examination. 



Pheretima posthuma (L. Vaillant). 



Very widely distributed though not in so large numbers as the other 

 species of the genus Pheretima. 

 External characters — 



Length. — 115-130 mm,, diameter 5 mm.. Segments about 140. 

 Colour, — Rich, brown. 

 Prostomium tanylobous. — Segments i — vi consist of single annuli vii and viii 

 of two annuli and the rest of three, the secondary annulation is lost towards 

 tjie posterior end. 



"^SetcB form an unbroken ring, clitellum was sometimes without setce, in 

 other cases three indistinct rows of setae were to be seen on it. Numbers 



U4 108 95 92 



of setce ^j X XX xxxi' 



First dorsal pore in intersegmental furrow \%. 



Clitellum as a ring occupying segments xiv — xvi (= 3 seg.). 



