TROCHUS. 323 
Trochus telescoptiunr. 
The Cerithium telescopium of authors (Kiener, Coq. Viv. 
Cerit. pl. 28, f. 1) is still preserved in the box marked for this 
species in the Linnean collection. Naturalists easily recognised 
so remarkable-looking a shell by its description and pictorial 
synonymy, which latter, by the change of the “t. 5, f.1” of 
Lister into “624,” as written by Linneus in his own copy, is 
rendered perfectly correct. 
Grohus Dolabratus. 
Despite of the erroneous assertion in the twelfth edition of 
the ‘Systema,’ that this salt-water native of the Antilles was 
an African land-shell, the species intended by Linnius was 
easily recognised by the “apertura dentata” of the ‘Museum 
Ulrice,’ and by the reference to Argenville, who has clearly, 
though rudely, delineated the yellow-lined Pyramidella dola- 
brata of Lamarck (Kiener, Coq. Viv. Pyram. pl. 1, f. 3), two 
examples of which are preserved in his collection. I do not 
consider this to be the Obeliscus dolabratus of Adams’ Mono- 
eraph, and know not a single adequate representation of it in a 
characteristic condition: Favanne, pl. 65, f. L, and plate 452, 
f. 2 of the ‘ Encyclopédie Méthodique, Vers’ seem intended for 
it; and the P. terebellum of Crouch (Introd. Lam. Conch.) 
appears to me to be the edentulous form of the same shell. 
“Matura labro intus dentato evadit, et apertura Helicis”’ has 
been written in the revised copy; our author evidently con- 
sidered, as indeed is evidenced by a marked specimen in his col- 
lection, that the rufous-lined P. terebellum of authors (Reeve, 
Conch. Syst. pl. 207, f. 9) was an immature state of the same 
species. His proposed addition of “ Pet. Gaz. t. 63, f.12” to 
the synonymy would have been far from an improvement, for 
the Pyramidella rudely represented in that work is too slender 
for even the true dolabrata, and looks more like the O. tere- 
belloides of Adams. 
