294 DR. T. S. COBBOLD ON ENTOZOA. [Mar. /, 



3. Notes on Entozoa. — Part IV. By T. Spencer Cobbold, 

 M.D., F.R.S., F.L.S., Correspondent of the Academy of 

 Sciences of Philadelphia. 



[Received February 14, 1876.] 



(Plate XXI.) 



The present series comprises a variety of new and interesting pa- 

 rasiteSj all of them belonging to the Nematode Order. 



12. Ascaris cornelyi, nov. sp. (Plate XXI.) 



On the 2 1st of December, 1875, I was requested to identify a ne- 

 matoid which Mr. Sclater had only a few days previously received 

 from Mr. J. M. Comely, C.M.Z.S. As stated on the label of the 

 bottle, the worms had been removed from the intestines of a Vulturine 

 Pintado ( Numitia vulturina). At once making a pocket-lens exami- 

 nation of the parasites, I remarked that the species was probably new 

 to science ; and on the 30tb of the same month this opinion was 

 confirmed by careful investigation. In a more or less marked man- 

 ner its characters differed from allied forms infesting fowls and game 

 birds (such as Ascaris compar, A. perspicilla, A. inflexa, &c.) ; 

 consequently I have ventured to name the worm A. cornelyi, after 

 the discoverer. The bottle contained eleven specimens in all, eight 

 of them being of the male sex. I think the worms must have been 

 unduly shaken during transmission ; for not only were they coiled 

 together in a very complicated way, but at least three of the males 

 had their exserted spicules broken. From the best examples I 

 gathered the following diagnostic characters : — Head entirely naked 

 and destitute of appendages, the dorsal lip being conspicuously larger 

 than either of the two ventral lips ; body much contorted and rather 

 suddenly narrowed at either end, especially towards the head in the 

 female ; tail of the male appearing diagonally abrupt when seen in 

 profile, and furnished with a sharply pointed subulate process at the 

 tip, also presenting on either side a feebly developed but distinctly 

 four-lobed membrane ; spicules two in number, long and slender, 

 unequal, the exserted portion of the longer one measuring fully T L of 

 an inch ; tail of the female with an ensiform profile, sharply pointed 

 and furnished with an extremely minute, distinct but scarcely sepa- 

 rable process at the tip. Males up to | of an inch in length, the fe- 

 males being very nearly an inch long, with a breadth of T V of an inch. 



Of the accompanying figures, two of them illustrate the characters 

 of the head and tail of a female worm, whilst the others show respec- 

 tively right and left profile views of the tail of the male as exhibited 

 by the two most perfect specimens (Plate XXI. figs. 1-4). The ar- 

 rangement of the spicules in the fourth figure is clearly the result of 

 artificial twisting. 



13. Strongylus hemicolor, nov. sp. (Plate XXI.) 



Nearly ten years bark I received a batch of parasites from the 



