11-1 A. G. Bourne — On certain E arniu-orms from tlie [No. 1, 



state witli certainty wliich. segments they really bound. All tlie re- 

 maining septa are very thin. 



Alimentary Oanal. — The mouth occupies the usual position and 

 when the prostomium is protruded is overhung by it, but, as stated above, 

 the prostomium can be retracted so as to be completely hidden by the 

 buccal somite ; the mouth then appears to be terminal. 



The buccal cavity and pharynx resemble those of T. orientalis. 



The gizzard has precisely the structure described for that species. 

 It is " divided inter two portions an anterior small thin- walled com- 

 partment and a large thick-walled portion, the gizzard proper, this last 

 has a nacreous apipearance on the outside and is lined by a very thick 

 chitinous layer." It lies between septum V — VI and septum VIII — 

 IX and thus extends over three somites (VI, VII, VIII). Muscular 

 bands are attached to the walls of the gizzard and pass to the body wall. 



The alimentary canal is considerably dilated in somite XI or XII, 

 a pair of oesophageal glands being present. From the gizzard up to 

 this dilation the oesophagus is narrow, and beyond the latter, until it 

 widens out at about somite XVI, it is also narrow. 



There are four pairs of glandular bodies placed on the intestine in 

 the hinder region of the body. They are all bi-lobed and lie below the 

 dorsal vessel and not above it. (Beddard states that they lie above the 

 dorsal vessel in T. orientalis.) 



Nepliridia. — There are large tufts of nephridial tubules in the 

 pharyngeal region and a series of smaller tufts in the other pre-clitellar 

 somites. I have esjDeoially noted the tufts which are placed near the 

 spermathecal ducts. I am unable, from the specimens I have, to enter 

 into further details with regard to the nophridia, but I have observed 

 nothing which differs from Beddard's account of these organs in T. 

 orientalis and T. gammi. 



Qenerative organs, — I am anxious to examine other specimens before 

 giving a full account of these organs. 



A pair of ovaries are present in the usual position in, I believe , 

 somite XIII, but the specimens being very contracted in this region it is 

 impossible to be quite certain as to the number of any particular somite. 

 The oviducts open to the exterior by a pair of pores placed in the 

 anterior half of somite XIV. 



I have been unable to see the testes. 



I have found a single pair only of seminal reservoirs and near them 

 a pair of bodies with a nacreous appearance which seem to be ciliated 

 rosettes, as, connected with these, I find the vasa deferontia. 



I cannot be quite certain, but apparently both the seminal reservoirs 

 and the ciliated rosettes belong to somite XI ; as mentioned above, the 



