850 



While this species is generally lincated, but sometimes occurs 

 white or spotted, it is more usual with the jireceding to be white; 

 but the true difference, if sufficiently marked to be specific, is the 

 great width between the asperated ribs and the distance of the 

 points upon them. The species is from the Pacific Ocean. 



7. Cerithium aluco (pi. clxxvii. f, 34, 35), Linnaus, Syst. 

 Nat. ed. 12. p. 1225 (Murex). Murex coronatus, Born. 



Cerith. testa laivi, pallida, nigro et fusco maculata ; anfractibus 

 ventricosis, superioribus cancellatis, medianis angulo superiore 

 distanter angulatim et acute nodulifcris, ultimo univaricoso ; aper- 

 tura alba, bicanalifcra ; labio interno integro postice uniplicato, 

 antice ad canalem angulifero; labio cxterno rotundato, super ca- 

 nalem in angulum producto ; canali elongato subabrupte recurvo. 



The whorls are crowned with large, distant, acute tubercles. 

 The whole shell, excepting the apical whoi'ls, is smooth and 

 spotted with irregular specks and blotches of black. The aper- 

 ture is more inflated than cither of the clavate species. The dark 

 specimen figured is from the Philippines. Tlic light small speci- 

 men is from the collection of the late Mr. G. S. Sowerby. Lo- 

 cality unknown. 



8. Cerithium Sowerbii (pi. clxxvii. f. 33), Kiener, Sp. do 

 Coq. pi. 7. f. 2. C. clava, Sowerhifs Genera. 



Cerith. testa solida, pallida, Iffivigata, pyramidali, fusco nebu- 

 lata et punctis maculisque tessellata ; anfractibus superioribus 

 subcrenulatis et carinatis, medianis ad latera compressis; sutura 

 vix distincta ; apertura subquadrata, postice canalifero ; labio in- 

 terno ])urpurascente, postice uniplicato, antice laminatim incras- 

 sato ; labio externo rotundatim incurvo, Iffivi ; canali attenuato, 

 abrupte incurvo. 



Differing from C. ahico in its more pyramidal form, the straight- 

 ening of the whorls, the comparative squareness of the apertui'e, 

 and the greater solidity of the whole shell. The late Mr. G. B. 

 Sowerby thought that he recognized in this shell the C. clava of 

 Bruguiere. 



9. Cerithium Cumingii (pi. dxxvi. f. 19), A. Adams (Ver- 

 tagus). 



Cerith. testa laevigata, nigro et fusco longitudinaliter disruptim 

 fasciata ; anfractibus superioribus subangulatis cancellatis, media- 

 nis vix angulatis, ultimo ovali ; apertura bicanaliculata ; canali 

 recurvo. 



