346 TAYLOR : ON TESTACELLA SCUTULUM. 



CHANNEL ISLES. 



Guernsey. — In Guernsey, the late Dr. Lukis was acquainted with 

 Testacella as early as 1801, as it inhabited his garden at that time, and was 

 afterwards discovered at the end of the valley in which his garden was situ- 

 ated. It is also recorded by Cooke & Gwatkin, under the name of T, 

 halioiidea, as abundant in Guernsey. Specimens supplied for examination 

 by Mr. Tomlin and Mr. Cooke from market-gardens, near St. Peter's Port, 

 proved the species to be T. scuhdum. 



Sark. — Messrs. Cooke & Gwatkin also record T. haliotidea as abundant 

 at Sark, but the specimens are probably really referable to T. scutuhim. 

 The precise locality according to Mr. Cooke is the Seigneurie grounds. 



FRANCE. 

 Has been collected in many localities in France, Paul Massot, 1876 ; 

 by De Cessac, in the department of the Creuze, Gassies and Fischer, 1856 ; 

 and in the department of the Gironde, where it is coip.mon at La Teich, La 

 Teste, Facture, Sallas, &c. — Gassies Mai. Aquitaine, 1876. 



SPAIN. 



A specimen collected by Mr. R. D. Darbishire, B.A., at Granada, in 

 Andalusia, which he kindly presented to me, was examined internally by 

 Mr. Ashford and shown to be — as far as could be ascertained from a spirit 

 specimen — in general accord with the organization of T. scutidtuii, but with 

 fewer lateral muscles to lingual sheath than is usual in that species, and 

 having a short accessory almost filiform muscle near base of penis retractor, not 

 hitherto observed in T. scutulum. The shell and outer appearance are in 

 accord with T. sadidum with which we may in the present paper regard it 

 to belong. 



The specimens collected by the Rev. J. W. Horsley at Gibraltar and 

 recorded by myself and others as T. haliotidea var. scididuiii do not belong 

 to that form, but probably are true T. haliotidea. 



Affinities. . 



It is far from improbable that at least two Continental forms 

 will upon critical examination be found to be identical with the 

 present species, these are the T. bisulcata of Risso and T. pec- 

 chiolii of Bourguignat. 



T. BISULCATA is Stated by Dupuy to differ from T. haliotidea 

 in the warmer colors and the less-distinctly apparent ramified 

 grooves or furrows of the animal. The shell is also stated to be 

 more elongated, narrower anteriorly, very markedly flattened, and 

 the columella truncated anteriorly, but narrower behind, which 

 gives the opening an oboval shape, the epidermis is ferruginous 

 and the surface is finely and rather regularly striate, while the 



J.C, v., July, 1888. 



