MONOCEROS. 



Plate III. 



Species 8. (Mus. Cuming.) 



MoxocEROS PLUMBEUM. 3Io/i. testd globoso-oratd, crassd, 

 pondtrom, spird brevmimd, acuta ,• atifraclibus siipenie 

 tamidii ; columelld arcuald, hasi viucronatd, siiperni 

 callosd, lahro tetmi, simplici, dente pano basem versus 

 munito ; aurantio-luted, epidermide crassd oUvaceo- 

 fuscd indutd. 



The leaden Monoceros. Shell globosely ovate, thick, 

 ponderous, spire very short, shai-p ; whorls swollen 

 round the upper part ; columella arohetl, pointed at 

 the base, callous at the top, lip thin, sinijile, furnished 

 towards the base ^rith a small tooth ; orange-yellow, 

 covered with a thick olive-brown epidermis. 

 Bucciiium plumbmm, Chemnitz, Conch. Cab. vol. xi. 



p. 86. pi. 188. f. 1806, 1S07. 

 Buccimini plumbeum, (Sect. LcsMonodontes), Deshayes. 

 Ebnrna plmnbea, Sowerby. 



Hab. ? 



This appeaj's to be the most natural situation for this 

 vexata species ; its generic chai-actcr is far removed from 

 the type of Buccinum. 



Species 9. (Mus. Cuming.) 



MoNOCEKOS LUGUBRE. Mon. testd ovafd, suhventricosd, 

 aiifrac/ibus costis tribu^ vel quatertih rudh cingidatlf, 

 custis Idc ilUc iumidis, inciso-striatis, interstitiis lacu- 

 7iosis, aperturm fauce denticulatd, deide margiiMli 

 loiufiss'mio incurvo ; fused, maculk fiammullsve nigrm 

 varieyatd, columelld et aperturas fauce purpurea fuscis. 

 The mourning Monoceros. Shell ovale, somewhat 

 ventricose, whorls ench'cled with tlu'ee or fom- rude 

 ribs, ribs swollen here and there, engraved with striae, 

 interstices guttered, interior of the aperture denticu- 

 lated, marginal tooth very long, curved inwards ; 

 brown, variegated with black blotches or tlames, colu- 

 mella and interior of the aperture purple-brown. 

 Sowerby, Genera of Shells, Monoceros. f. 3. 

 Buccimim cymatum, Solander MSS. 

 Monoceros cyniatnm, Sowerby, Tankerville Catalogue. 

 Monoceros arniatmu, Gray, AVood Ind. Test. Supp. 

 Hab. California (on rocks) ; Belcher. 



This species originally received the name of Buccinum 

 cytiiaiuin from Dr. Solander, and the manuscript in which 



it occurs is accessible to all who desire to consult it 

 among the records in the library of the British Museum ; 

 it cannot however, in justice to foreign authors, be re- 

 garded of any authority, and the word cymatum has never 

 been published except in an equally inauthentic inventory 

 of species in the Tankerville Catalogue. If Mr. Sowerby, 

 to whom this confusion of names is incidentally due, had 

 issued a description or figure of the species, imder its 

 original title, in his valuable appendix to that Catalogue, 

 it would have been duly established ; but, as this is not 

 the case, the species becomes entitled to the new name of 

 lugubre, somewhat indiscreetly introduced by the same 

 author in his ' Genera of Shells.' 



Species 10. (Mus. Cuming.) 



Monoceros imbricatum. Mon. testd ovatd, ventricosd, 

 /iris subangustis unditjue cinyulrdd, /iris mterstitiisque 

 den-nssinit; imbricato-squamosis, aperturd, dilatatd, den- 

 te longissimo, erecto ; rufescerde-fuscd columelld et 

 aperiura fauce a/bis. 



The imbricated Monoceros. Shell ovate, ventricose, 

 encircled throughout with rather narrow ridges, 

 which, together with the interstices are very thickly 

 imbricately scaled ; aperture ddated, tooth very long, 

 straight ; reddish-brown, columella and interior of 

 the aperture white. 



Variety 0. (Fig. 10. b.) 

 Testa /tevigata. 

 Shell smooth. 

 Lamarck, Anim. sans vert. (Deshayes' edit.), vol.x. p. 119. 



Buccimim monoceros, Chemnitz. 



Buccinum monodon, Gmelin. 



Rudolpha monodon, Schumacher. 



Variety j3, Monoceros striatum ? Lamarck. 

 Hab. Cape Horn. 



It would scarcely be supposed that there are states of 

 this species in which the imbricating scales almost whoUy 

 disappear; in the s])ecimen represented at Fig. 10 b, there 

 is only just sufficient indication of the squamate scnlptm-e 

 at the lip to identify it. 



Species 11. (Mus. Cuming.) 



Monoceros cixgllatum. Mon. testd ovatd, .spird sub- 

 prominuld, anfractibus superue concavo-depressis, /ins 



September, 1846. 



