450 REPORT ON ZOOLOGY, MDCCCXLIV. 



small intestine and in the spleen belong to one and the 

 same species, he remarked no trace of transverse rugae, but 

 distinctly two broad longitudinal bands on the abdominal 

 aspect, which were covered with projecting granules. Rayer 

 (Archives de Med. comp., Nr. 2, 3, p. 180) has also com- 

 municated some remarks on Trichosoma, likewise illustrated 

 with figures. He found, on the walls of the urinary bladder 

 of Mus decumanus, sometimes ten to twenty individuals, 

 although the parasites had induced 110 change in the bladder. 

 They occurred also in the calices [of the kidneys] and 

 ureters, but the males were always more rare than the 

 females. The same was the case with a Trichosoma from 

 the urinary bladder and renal calices of the Fox. With 

 reference to the more intimate structure of this Trichosoma, 

 the unity of the internal female sexual organs, the external 

 appendage at the vulva, the peculiar form of the penis, and 

 its elongated sheath, which, together with the penis, projected 

 from the male generative pore, did not escape the observation 

 of Rayer. 



Bellingharn (Annals of Nat. Hist. vol. xiv, 18-44, p. 471) 

 has given a list of the Entozoa occurring in Ireland, and 

 has appended to it several remarks, which, however, do not 

 present anything new to the Helminthologists of Germany. 

 Of the genus Trichosoma, 13 species are noticed, among 

 which nine are probably new. They were met with, by 

 Bellingham, in the urinary bladder of the Cat and Rat, and 

 also in the intestinal canal of Mustek vulgaris, Erinaceus 

 europreus, Otus vulgaris, Columba livia, Corvus nionedula, 

 and Merluccius vulgaris. 



According to Delle Chiaje (vid. Isis, 1843, p. 557; Delle 

 Chiaje, sul Tricocefalo disparo, ausilario del Cholera 

 asiatico, osservato in Napoli, 1836) the Trichocephalus dispar, 

 which otherwise is seldom met with in Italy, occurred 

 abundantly in the bodies of persons dead of cholera. Its 

 presence is said to have aggravated the disease. Rokitansky 

 also (Handbuch der patholog. Anat. Bd. iii, p. 295) assigns 

 a special importance to the occurrence of this worm in the 



