MANGELIA. 



Plate I. 



(Figures magnified to two and a half times their natural size.) 



Genus Mangelia, Leacli. 



Testa Marginellfffonnis aid fusi/oriuh, jderumque longifu- 

 dinaUter cosla/a, spird nunc brevi, nunc acummato- 

 tnrritd; columella labroque intus subtilminie rugoso- 

 denticulatis, lahro incra^sato, superne leviter sbiuato ; 

 canali brevksimo, plus minusve truncato. 



Shell Mai-ginella-sliapcd or fusiform, mostly lougitudiually 

 ribbed, spire sometimes short, sometimes acumiuately 

 tuiTeted; lip and columella very finely rugosely 

 denticulated, lip thickened, slightly sinuated at the 

 upper part ; canal very short, more or less truncated. 



M. Deshayes passes a severe and somewhat merited 

 reprimand upon M. Kiener, for having, in genus Caucel- 

 laria of his ' Iconogi-aphie ', which professes to illustrate 

 the shells contained in the Lamarckian collection, omitted 

 mention of the C. tliiarelh of that illustrious author, not- 

 withstanding theauthority "mon cabinet" attached to that 

 species in the ' Animaux sans vertebres '.* It would 

 certainly have been desirable if M. Kiener had published 

 his reasons for this omission, for they were probably 

 founded on the discovery that the shell in question is not 

 only no Cancellaria at aU, but that it is not referable to 

 any genus hitherto estabbshed. Mr. Sowerby had ah'eady 

 intimated that this shell belongs to another genus ; and 

 M. Deshayes en-oneously imagines, from Martini's figure, 

 that it may be the young of Strombus jiUcatiis. 



This " Fusiis adformniii. cithara conipositiis " of Martini, 

 Cancellaria citharella of Lamarck, has been collected in 

 various states by Mi-. Cimiing, at the Philippine Islands, 

 together with upwards of fifty otlier closely allied species, 

 the whole of which are new and display a very strikmg 

 association of character. In addition to these I have 

 a new one from Austraba, one from Sicily, some from 

 the West IntUes collected by the Rev. Lansdowne GuUding, 

 and five collected by Capt. Belcher during the surveying ex- 

 pedition of the ' Sidphur ', described and figiu-ed by Mi-. 

 Hinds in the Zoology of that Voyage ; aU of which I now 

 propose to assemble under the head of Mangelia, a genus 

 proposed some years since in manuscript, by the late Dr. 

 Leach of the British Museum, of which I find no published 

 record. 



The Mangelia are nearest allied to those aben-ant species 

 of Pleurotoma in which the predominant character of that 

 genus, the fissure in the upper extremity of the lip, be- 

 comes modified into a somewhat obscm-e sinus. Then- 

 general aspect is that of a more or less fusiform Margi- 

 nella, without plaits or polished exterior ; distinguished, 

 on the other hand, by a row of faint wi-mkle-bke denti- 

 cidations on the inner sm-face of the bp and columella, 

 and a gutter-Hke sinus in the lip at its junction witli tlie 

 body-whorl, in a manner similar to that of the Pleurotonice 

 above referred to. 



It is rarely an author has the pleasm-e of introducing a 

 whole genus of seventy new species, but such is the op- 

 portunity which the indefatigable exertions of Mi-. Cuming 

 have atforded me, with the exception of the one included bv 

 Lamarck with the Cancellaria, and the five pubbshed by 

 Mr. Hinds in the 'Zoology of the Sulphm-'. They "were 

 foimd by that eminent traveller mider various circum- 

 stances, some on the reefs, some in concealed situations 

 under stones, and some at depths vai-jing from three to 

 twenty five fathoms. 



Species 1. (Mus. Cuming.) 



Mangelia Sicula. Mang. testa, sulfusiforml, spird aeu- 

 miiiatd, aiifractibus rutundatis, gibbosiuseulis, concen- 

 trice costatis, lavibus ; aperturd brevi, ovatd, sinu sub- 

 conspicuo ; intus extusque castaneo-fuscd, labro flavi- 

 cante, fusco-lineato. 



The Sicilian Mangelia. Shell somewhat fusiform, 

 spii-e acuminated, whorls rounded, rather gibbous, 

 concentrically ribbed, smooth, aperture short, ovate, 

 sinus rather conspicuous ; dark chesnut-brown within 

 and without, bp yellowish, crossed with fuie brown 

 lines 



Beeve, Pro. Zool. Soc, 1846, 



Hab. Sicily. 



I place this species at tbe commencement of the series 

 as indicating the nearest approach to Pleurotoma ; oscil- 

 lating in character between that of the two genera, it 

 might be referred with equal propriety to either. 



* n y a une autre coquille, la Cancellaria citharella de Lamarck, et dont M. Kiener ne parte pas dans sa Monographie. Une telle lacune 

 est Scheuse dans nn ouvrage aussi spe'cialement consacre' a I'illuslration de la partie conchyliologique des animaux sans vertebres. M, Sowerby 

 suppose que cette coquille appai-tient a. un autre genre, et si Ton s'en rapporte a la iigme cite'e de Martini, ellc ne strait en effet qu'un jeuue 

 Strombe. H appartenait done a M. Kiener d'eclairer la science a ce sujct." 



And again, " M. Kiener nons laisse dans I'ignorance la plus complete a I'e'gard de cette espece de Lamarck. Nous avons toujours era 

 quo 1 un des buts que se proposait I'auteur du Species des coquillcs, ctait de domier des renseiguemens positifs sur les especes de Lamarck, 

 mises a sa disposition. En s'abstenant, M. Kiener ote gratuitemeut a sou ouvrage ce qui lui am-ait donne le plus d'interet, non-sculemeut ani 

 yeus des simples amateurs, qui tons consultent les travaux de Lamarck, mais aussi a ccux des personnes qui font de la science d'une maniere 

 serieuse et qm recbercbent avec aridite tout ce qui pent les e'clairer sur les espeees de Lamai-ck. Cette Cancellaria citharella, d'apres la 

 figure de Martini, nous semble une jeune Slrombns plicatus de Lamarck."— Deshayes, Animaux sans vertebres, vol. ix. p. 401 and 407. 



May, 1846. 



