DR. T. S. COBBOLD, FURTHER OBSERVATIONS ON ENTOZOA. 357 



some unusually slender forms of EcMnorhynchi, which were accompanied by several 

 unimportant-looking Nematodes. 



Amongst birds I may mention the occurrence of numerous tape-worm proglottides 

 infesting a black-throated species of AmacUna ; and in the intestinal caeca of the Cheer 

 Pheasant [Fhasicmus WalUcliii), as also in those of the Black-backed Kaleege {Etiplo- 

 comus melanotis), multitudes of the oft-recurring Ascaris vesiculcms. The last-named 

 bird was bred in the Zoological Society's Gardens. Here also may be noticed the existence 

 of many examples of no less than three entu'ely different species of Strongylus infesting 

 respectively the proventriculus, intestines, and caeca of an Ashy-headed Goose {Bernicla 

 poliocephala) . One of these parasitic forms appears to be new ; but, of the others, the 

 second is clearly referable to Strongylus tubifex, and the third is probably S. nodularis. 



The intestines of a Tinamou [Tinamus ?) likewise yielded several specimens of a new 



Strongylus. 



From a Starling (Sturnus vulgaris) shot by me on the 10th of January last, I obtained 

 a solitary example of the Tcenia farciminalis, the lowermost joints of which, though still 

 firmly adherent to the strobila, were amply furnished with mature eggs containing sis- 

 hooked embryos, having a diameter of about axo'th of an inch. I have figured one of 

 these in the shell (fig. 17), to contrast with those found in the cestode infesting the 

 chicken. The last-named parasite I suppose to have been Tcenia infundihuliformis. 



Turning to Mammalia, I have to notice the occurrence of multitudes of Pentastomes in 

 the abdominal cavity and viscera of a Cape Guevi {Cephalophus pygmcBus), these being in 

 all respects similar to those I have described from the Bubale Antelope. In a Spring-bok 

 {Gazella Eiicliore) I also encountered two characteristic specimens of the so-called 

 Cysticercus tenuicolUs ; and in one of the bronchial tubes of the American Red Fox 

 {Vulpes fulvus), from which the new Distome, D. conjiinctum (mihi), was procured, there 

 were found two specimens of Trichosoma cerophilum. The eggs of the last-named worm are 

 scarcely distinguishable in outline from those of Tricliocephalus affinis, their longitudinal 

 diameter being only a trifle less — that is to say, about the sloth of an inch (fig. 18). From 

 the common Bat I have secured an example of Tcenia p)usilla, measuring upwards of 20 

 inches in length ; and lastly, I may mention some remarkably large Cysticerci infesting the 

 abdominal cavity of the Ethiopian Wart Hog {Pliacoclioerns cethiopicus), and of the Bed 

 River Hog {Totamochcerus penicillatus). These gigantic Scolices are apparently referable 

 to two distinct forms of tape-worm ; but, as their separate description and comparison will 

 involve many other points of interest, I do not off'er any further particulars respecting 

 them in the present communication*. 



* In the recently published ' Proceedings of the Zoological Society' for 1861, Part I., I have since given a minute 

 description of these Cysticerci (p. 93, plate xvii.) ; and in a separate paper published in the same Part of the 

 ' Proceedings ' the new forms of Entozoa above mentioned are described under the following titles : — Echinorhynchus 

 inflexus from the Turtle ; Cestoidemn Amadin<B from the Araadina ; Strongylus acuticaudatus from the Ashy-headed 

 Goose ; and Strongylus spiculatus from the Tinamou. Three of these species are likewise figured in plate xx. 



3 B 2 



