1889.] 



Wi'stprn Himalayas mid Delira Dun. 



115 



septum wtich I liave calculated to be septum X — XI is a thick one, and 

 tliey certainly lie posterior to it. The seminal reseryoirs are very largo 

 and extend backwards over three or four somites. 



The prostates (I reserve for the present any expression of opinion 

 as to the desirability of retaining this term or substituting for it the 

 term atria) are large and lie one on either side of the body. Each 

 consists of an irregularly coiled, almost orange-coloured, glandalar tube 

 which is connected at one end with a muscular duct opening to the 

 exterior in somite XVII. The vas deferens is connected with this just 

 before it penetrates the body wall. There is a muscular sac containing 

 several very long and slender penial sotse ; these project from the little 

 papilla which lies in the depression round the male pore. These setro 

 are shewn in PI. Ill, Pig. 3. There are two varieties, one of which is 

 neai-ly a quarter of an inch in length and much longer than the other. 



There is a single pair of spermathecfB, the apertures of which lie be- 

 tween somites VII and VIII, as shewn in PL II, Fig. I. Bach sperma- 

 theca is large, somewhat reniform in shape, and has arising from the hilus 

 a short, very stout and muscular efferent duct. Opening into the duct 

 near the hilus is a pair of diverticula. One of these is so deeply bi-lobed 

 as to almost form two separate little sacs, while the other is slightly 

 tri-lobed. Both have a very nacreous appearance which is not possessed 

 by the spermatheca itself. 



General Bemarks.—Theve can be no doubt but that this worm 

 belongs to the genus Typlwms, Beddard. Two species of this genus have 

 been described, T. orientalis* and T. gammi.f 



I should have hesitated about placing this worm without further 

 information in a separate species had not Beddard described this second 

 species T. gammi; but this worm differs as much from either T. orientalis 

 or T. gammi as these latter do from one another. Beddard denies the 

 existence of a prostomium. If this is non-existent it is a very remarkable 

 fact. Beddard states that setas 3 and 4 are absent from the somites 

 which form the clitellum in T. orientalis. Ho does not mention their 

 presence or absence in speaking of T. gammi. They are present in my 

 species, although not always visible on a mere external examination. 

 Beddard says nothing with regard to the ai-rangement of the seta3 in the 

 posterior region of the body, so that I am justified in concluding that 

 the arrangement which I haved noted is j^eculiar to my species ; it gives 

 the worm such a striking appearance that one could hardly fail to notice 

 it, Beddard does not mention oesophageal glands as present in either 

 T, orientalis or T. gammi. 



* Beddard, Ann. & Mag. Nat. Hist. ser. 4, vol. xii, 1883. 



t Beddard, Quarterly Jouin, Miorosc. Science, vol, xxix, 1888. 



