1874.] DR. T. S. COBBOLD ON NEW OR RARE ENTOZOA. 125 



these minute prominences carefully (fig. 3). There were two short 

 conical papillae placed within about the -gfo of an inch from the 

 actual extremity, the point itself being furnished with an excessively 

 minute prominence, whose base scarcely exceeded the -j-jjinro of an 

 inch in diameter. There was a very distinct appearance of a cen- 

 trally placed duct (which I regarded as the tubular extension of a large 

 caudal gland), the end of which had apparently become detached 

 from the interior of the minute terminal papilla. As already 

 remarked by Dujardin, the lateral lines of the body are brown- 

 coloured and very conspicuous. I was particularly struck with the 

 remarkable distinctness of the contents of the seminal tubes, whose 

 separate particles could readily be seen through the thick integuments. 

 Unwilling to injure the specimen, which I afterwards returned to Mr. 

 Smith, I merely inserted the point of a fine needle into the main 

 channel, and thus obtained a large quantity of the spermatozoa. 

 These small particles, notwithstanding their long immersion in strong 

 spirit, presented a tolerably characteristic appearance — the larger and 

 fully formed corpuscles giving a long diameter of y^jy of an inch 

 (fig. 4). I may add that several of the corpuscles displayed, more 

 or less perfectly, the well-known flask-shaped envelopes so often de- 

 scribed in connexion with this group of parasites. 



5. Spiroptera turgida, Duj. (Plate XVIII. fig. 5.) 



On the loth of April, 1873, I examined the contents of a small 

 phial in which were two Worms that I had long previously received 

 from Dr. Murie. They were sent to me during the time of his 

 official connexion with the Society's Menagerie. The smaller 

 parasite, as was stated on a label, came from the stomach of an 

 Opossum (Didelpkys azara). The worm was evidently a female, 

 but, unfortunately, not in a satisfactory state of preservation. It 

 measured more than an inch in length by^" in breadth. The accom- 

 panying figure may be useful (fig. 5) ; but the minute characters 

 were mostly either lost or obscured. The mouth was round, and 

 certainly furnished with several minute teeth, the number of which 

 could not be accurately ascertained. 



6. Ascaris cuspidata, T. S. C. (Plate XVIII. fig. 6.) 



The larger of the two Worms above mentioned appears to be new 

 to science. Dr. Murie labels it as having been obtained from the 

 stomach of a Green Monkey. I have little doubt that his record 

 refers to one of the Monas (Cercopithecus). The Worm is a true 

 Ascaris, and, although a male, measures fully 3^ inches from head 

 to tail. Owing to imperfect preservation, the spicules have been 

 lost. The three oral lobes are particularly prominent. The caudal 

 extremity is furnished with a very fine spine, or cusp, formed by an 

 extension of the epidermis (fig. 6). This minute cusp curves back- 

 wards, and measures only xinrB inch in length by the 3 ^ v inch in 

 breadth at the narrowest part. The anal aperture is placed at a 

 distance of ■£$ inch from the extremity of the tail. The eggs have 

 a long diameter of about the ^ of an inch. 



