Rev. M. J. Berkeley & Mr. Hoffman on Cerithium.431 
Arr. LIX. 4 description of the anatomical structure of Ce- 
rithium Telescopium, Brug. By the Rev.M.J.BurKerrey, 
4.M., and G. YW. Horrman, Esq. 
THE genus Cerithium is placed by Lamarck at the beginning of the 
first section Canaliferes of bis Trachelipodes Zoophages, immediately 
after Turritella, which closes the section Trachelipodes Phytiphages. 
The characters of the animal are evidently taken from Adanson, who 
informs us that one of the species lives in the sand amongst grass and 
mangroves, feeding on ‘ scolopendres’”’ and other small marine worms. 
Cuvier places it immediately before Murex, after Purpura, Cassis 
and Yerebra. This would imply a structure of the parts of the mouth 
adapted for boring shells, according to the known habits of Murex and 
certain allied genera. But a single glance at Adanson’s figure is suffi- 
cient for conviction that the animal is much more nearly allied to 
the Trochoides; and that Lamarck judged rightly according to the 
evidence before him in placing it on the confines of his two great classes. 
And this is corroborated by the little additional information in the Manuel 
des Mollusques of M. Sander Rang, who describes the mouth as toothless 
but furnished with a small tongue. 
In this state of information with regard to the habits and organization of 
the genus Cerithium, it was most gratifying to receivea living specimen of 
Cerithium Telescopium from Mr. G. B. Sowerby, as a prospect was 
offered of coming to some satisfactory decision as to the proper situation 
of the genus; though the species is one, which is not so nearly related 
as some others to the individual whose animal is figured by Adanson, 
and is indeed made a subgenus of Trochus after De Férussac by Sander 
Rang. 
Though placed in f-esh sea water, the utmost care being taken to 
renew it frequently, and all kind of marine substances which could be 
procured supplied for food, it refused all nourishment, contenting itself 
with simply walking over them, and in so doing touching them with its 
proboscis. It was exceedingly shy, so that with great difficulty 
a drawing was obtained of the animal exserted. As it declined all nou- 
