GASTEROPODA PECTINIBRANCHIATA. 69 



MiTRA, Lam. 



The aperture oblong, with a few large plica; on the columella, the 

 one nearest the spire being the largest ; the spire usually pointed and 

 elongated. Several species are brilliantly spotted with red on a 

 Avhite ground*. The foot of the animal is small ; the tentacula a/e 

 of a moderate length, with the eyes on the side, near their inferior 

 third; the siphon also is of a moderate length, but it frequently pro- 

 trudes a proboscis longer than its shell. 



Cancellaria, Lam. 



The last whorl ventricose ; aperture ample and round, the internal 

 margin forming a plate on the columella. The spire is salient and 

 pointed, and the surface of the shell marked Avith decussating sulcif. 

 The 



BucciNUM, Lin. X 



Comprises all the shells furnished with an emargination or a sliort 

 canal inflected to the left, and in which the columella is destitute of 

 plicae. 



Brugieres has divided them into the four genera of Buccinum, 

 Purpura, Cassis, and Terebra, part of which have been again subdi- 

 vided by Messrs de Lamarck and Montfort. The 



Buccinum, Brug. 



Includes the emarginated shells without any canal, whose general 

 form, as well as that of the aperture, is oval. The animals — all such 

 as are known, are deprived of the veil on the head, but are furnished 

 with a proboscis, two separated tentacula, on the external side of 

 which are the eyes, and a horny operculum. Their siphon extends 

 out of the shell. 



The name of Buccinum is especially applied by M. de Lamarck to 

 those in which the columella is convex and naked, and the margin 

 without jjlicse or varix. Their foot is moderate, their proboscis long 

 and thick, and their penis, frequently, excessively large§. In the 



* Such are Vol. episcopalis, List., 839, 66; — TV. papalis, lb. 67 ; and 840, 68 ; 

 — Vol. cardinalis, 838, 65. Add, Vol. patriarchalis ; — Vol. jxrfussa, 822, 40 ; — Vol. 

 vulpecula, Martini, IV, exlviii, 1366; — Vol. plicaria, List., 820, 37; — Vol. sangui- 

 svga, List., 821, 8 ; — Vol. caffra, Martini, IV, exlviii, 1369, 1370 ; — Vol. acus, Id., 

 civii, 1493, 1494 ; — Vol. scabricula, Id., cxlix, 13S8, 1389 ; — Vol. maculosa, lb., 

 1377; — Vol. mdulosa, lb., 1385; — Vol. spadicea, Id., cl, 1392; — V. uuruniia, lb., 

 1393, 1394 ; — /'. decvssata, 1395 ; — V. tunicida, 1376, 



t Voluta cancellata, L., Adans., VIII, 16; — Vol, reticulata, 830, 25, &c. — Sow- 

 erb., Gen. of Shells, No. V. 



X M. de Blainville makes a family of his Paracephalophora Dioica Siphonobranchiata 

 of this great genus, -which he calls the Enotomostoma. 



§ Buccinum vndulatum, L., List., 662, 14 ; — Bucc. glaciate, L. ; — B. anglicum, 

 List., 963, 17; — B.porcatum, Martini, IV. cxxvi, 1213, 1214; — B.lavissinmm, Id., 

 cxxvii, 1215, 1216 ; — B. igneum, lb., 1217 ; — B. curinatum, Phips. Voy., XII, 2; — 

 B.solutum, Naturf.,XVI, ii, 3, 4 ; — B. strigosum, Gm., No. 108, Bonan., Ill, 38 ; — 

 B. glaberrimum, Martini, IV, cxxv, 1177, 1182 ; — B. strigostm, lb. 1183, 1188; — 

 B. obtusvm, lb., 1193 ; — B. coronafum, CXXI, 1115, 1116. 



