SKENEA. 161 



slightly into it. The size is less than half a lino. The 

 animal when dried (for it was not examined in a living 

 state) is of a wax-colour. 



This rare species has been taken in Donegal by JNIr. 

 Warren and by Mr. Barlee. 



S. ? mviSA, Fleming. 



Pure white ; lower disk spirally striated or costollated ; aper- 

 ture large and circular ; umbilicus capacious. 



Plate LXXIV. fig. 4, 5, 6. 



Turljo (Uvhiis, Adams, Trans. Linn. Soc. vol. iii. p. 254? ? from which Mont. 

 Test. Brit. p. 334. — Turt. Conch. Diction, p. 230; Rissoa 

 divisa, Brown, 111. Conch. G. B. p. 13. 

 rielb' Serpnloides, Mont. Test. Brit. Suppl. p. 147, pi. 21, f. 3 (probablj-) ; from 

 which Tnrho Serpidoidcs, Dill'SV. Recent Shells, vol. ii. 

 p. 884, and Wood, Index Testae, pi. 32, f. 165, BelpM- 

 noidea Serjndoides, Brown, 111. Conch. G. B. p. 20, pi. 8, 

 f. 40, 41. 

 Skenea divisa, Fleming, Brit. Animals, p. 314. — Brit. Marine Conch, p. 159. 

 Valvaia? striata, Philippi, Moll. Sicil. vol. i. p. 147, pi. 9, f. 3 ; vol. ii. 



p. 122? 

 Skenea Serpuloides, Brit. Marine Conch, f. 44, worn (from t_ype). 

 Adeorhis striatus, Seakles Wood, Crag Mollusca, p. 137, pi. 15, f. 7? 

 (fossil). 



We do not consider that the little shell we are about 

 to describe agrees with the four-whorled oval-mouthed T. 

 divisus of Adams, the paucity of whose detailed chai-acter- 

 istics must for ever prevent the adoption of it as a species; 

 and which was probably the mere fry of some well known 

 species. Montagu's figure of H. Serjiuloidcs, on whose 

 base are delineated the spiral striae denied it in the text 

 (where it is termed smooth, but the absence of sculpture 

 was probably enough the result of abrasion, and the de- 

 scription is correct in all other respects), agrees very well 

 with our shell ; but as the identity is not positive, we have 



VOL. III. Y 



