Miscellaneous. 237 



Several large Cestoid worms were found in the spiral intestine and 

 in the narrow portion of the stomach ; some of them measured a foot 

 in length ; they form a new species of the genus Anthobothrium. 



A. perfectuin, V. B. 



The anterior portion of the bothridia is hollowed into a sucker ; 

 the posterior portion has always a boat-like form. The strobila is 

 formed of a great number of individuals ; it is narrow in front, but 

 broad and tolerably thick in its posterior portion. The segmentation 

 is only visible at some distance from the bothridia. The proglottides 

 are longer than broad, with a black spot in the middle of each. The 

 ovaries are inflated and become black when exposed to the light. The 

 ova much elongated, but without filaments. 



The gills of the fish nourished five specimens of a Trematode worm, 

 which has been confomided by Kroyer and Diesing with Polystoma 

 appendicidata, a species which lives on Mustelus vulgaris and Scyl- 

 liuni caniculum. The author says that it is not only distinct from that 

 species, but that it may even form the type of a new genus, distin- 

 guished by having If -shaped hooks on the caudal appendage. He 

 gives it the name of Onchocotyle borealis, but does not describe it 

 any further at present. — Bull, de FAcad. Roy. de Belgique, 1853, 

 pt' 2. p. 258. 



ON THE GENUS LATIA. 



M. Reclus in the 'Journal de Couchyliologie ' for July 1851, de- 

 scribes a shell under the name of Crepidula neritoides, p. 205. t. 6. 

 f. 16, 17, as coming from New Holland, observing that he received 

 it from Mr. Cuming under the name of Loffia neritoides. This is 

 the shell which I described in a paper read at the Zoological Society 

 on the 11th of December 1849, and published at length in the 

 ' Annals of Natural History ' for January 1851 (vol. vii. p. 68), under 

 the name of Latia neritoides. It is almost unnecessary to observe, 

 that it has not so much aflanity with Crepidula as Ancylus has to 

 Patella ; that it is from New Zealand, and not from New Holland ; and 

 that Mr. Cummg never could have referred it to the genus Lottia I 

 I shoidd not have thought it requisite to have mentioned these inac- 

 curacies, not very creditable to his reputation as a conchologist, if 

 M, Petit in the 'Journal de Conchyhologie' for 1852, iii. p. 260, after 

 the error had been pointed out to him, had not wished to make it 

 appear that the genus Latia was really not pubhshed until after 

 M. Reclus' paper had come out, because he erroneously states that 

 the printing of the ' Proceedings ' of the Zoological Society for the 

 year 1849 was deferred, because the volume for 1850 has been so 

 delayed, overlooking the fact that the paper, with the description 

 of the genus, had also appeared entire in the ' Annals of Natural 

 History' for January 1851, when M. Reclus' paper was not printed 

 until July of that year. But M. Petit overstates his case in his 

 anxiety to justify his friend ; he declares that M. Reclus received the 

 shell without any note of its habitat, when in the description of the 

 shell he gives it as coming from New Holland, without any mark of 



