MisceUanttoug. 385 



neck and of the foot which becomes developed and lodges the orgaa'?. 

 The connexions of the nerves show the mantle redaced to that infe- 

 rior part which covera the shell. 



These examples suffice to prove the utility of this principle, which 

 will lead us to a single scheme, the true theoretical and ideal arche- 

 type of the (jrasteropod. — Comptea Rewhis, Dacember 27, 1S69, 

 tome Ixix. p. 1344. 



A new British LnmlSheU. By J. Gwrs' Jeppsets, F.R.S. 



My correspondent, Mr. Thomas Rogers of Manchester, has added 

 another species to this well- worked department of our fauna. Spe- 

 cimens of a Zfjiiites which he has now sent me, collected by him 

 under stones at Marple Wood, in Cheshire, prove to be the Helix 

 glahrn of Studer, Fer. Prodr. Xo. 215. Z. glaher has a wide range 

 on the Continent, from Normandy (where I have taken it), through 

 France, Savoy, Switzerland, Germany, and Dalmatia, to Epirus in 

 Greece. I also found the same species in 1S46 at Grassmere, and 

 in 1^57 at Barmouth, but had overlooked it. Mr. Rogers's speci- 

 mens being alive, I subjoin a description of the animal. 



Body dark bluish grey, striped like a zebra on each side in front, 

 and irregularly mottled behind ; in one of the specimens the hinder 

 part of the foot is minutely speckled with yellowish-brown dots ; 

 two narrow and slight parallel grooves run along the neck from the 

 head to the upper lip of the shell ; the surface is more or less wrin- 

 kled, and has a few large but indistinct lozenge-shaped markings : 

 manth very thick and dark at the mouth of the shell, over which its 

 edges are folded : tentacUs, upper pair rather long, and finely granu- 

 lated ; lower pair very short : e>jes small, placed on the upper part, 

 but not at the tips, of the tentacular bulbs : respiratory orifice round, 

 occupying the centre of the pallial fold : foot very long and slender ; 

 the sole appears as if separated from the upper part of the foot, being 

 defined by a darker line : slime thin and nearly transparent. I 

 could not detect any smell of garlic (so peculiar to Z. alliarius), 

 although I frequently irritated the animals. 



The shell is three times the size of that of its nearest congener, 

 Z. aUiariiiA, and is of a reddish-brown or waxy colour ; the whorls are 

 more convex or swollen, the lower part of the shell is not so much 

 arched, the mouth is larger, the umbilicus is smaller and narrower, 

 and the colour underneath is sometimes whitish. 



'21 April, 1870. . 



On the presence of peculiar Orrjans helonffing to the Branchial Appa- 

 ratus in the Rays of the Genus Cephaloptera. By M. A- DumIrll. 



Having ascertained, in a large species (Cephaloptera Kuhlii) from 

 the Indian Ocean, which is wanting in the Neapolitan Museum, the 

 presence of the prehranchial appendages which Prof. P. Panceri, of 

 Naples, was the first to see in one of the Mediterranean species (C. 



