RICmULA.— Plate III. 



transversely ornamented with rows of tubercles, which 

 are close-set somewhat square and pointed, interstices 

 striated, striae very minutely scaled ; yeUowish-white, 

 tubercles rusty-black, aperture purple-violet or orange- 

 red. 

 Murex concatenatus, Lamarck, Anim. sans vert. vol. ix. 



p. 599. 

 Purpura fraffum,and coneatenata, De Blainville. 

 Hah. Swan Point, North Australia (under stones at low 

 water). 



The species above cited from De BlainviUe's monograph, 

 are evidently varieties of the same ; I have specimens of 

 each before me from the collection of Mr. Cuming, and 

 can observe no other difference than a change of colour in 

 the aperture. 



Species 19. (Mus. Cuming.) 



RiciNULA SPECTRUM. Ricin. testa oblon^o-ovatd, spird 

 acuminata, longitudinaliter oblique codatd, costh S2tb- 

 obtum, tuberculatis, tuberculis compressis, interstitiis 

 striatic ; intus extmque attd. 



The spectre Eicincla. Shell oblong-ovate, spire acu- 

 minated, longitudinally obliquely ribbed, ribs rather 

 obtuse, tuberclated, tubercules compressed, interstices 

 striated ; pure white within and without. 



Reeve, Pro. Zool. Soc., 1846. 



Hai. Isle of Capul, Philippines (on the reefs at low water) ; 

 Cuming. 



A stout solid tuberculated shell, which appears to be 

 naturally colourless, the shell here represented being in the 

 finest possible condition. 



Species 20. (Mus. Cuming.) 



RiciNULA PULCHRA. Ricin. testd cylindraceo-ovatd, medio 

 obesd, utrinque attenuatd, basi recurvd, atifractibus 

 rotundatis, concentrice crebricostatis, transversim lira- 

 tis, lirii confertia, costoi super compresso-nodulatis ; 



luteo-aurantid, lirarum interstitiis fusco-lineatis, aper- 

 turd, apice basiqm pulcherrime roseis. 



The beautiful Eicinula. Shell cylindricaUy ovate, 

 stout in the middle, attenuated at both ends, recurved 

 at the base ; whorls rounded, concentrically closely 

 ribbed, transversely ridged, ridges close-set, com- 

 pressly noduled across the ribs; yellowish orange, 

 interstices between the ridges Uneated with brown ; 

 aperture, base, and apex, prettily stained with pink. 



Reeve, Pro. Zool. Soc, 1846. 



Hab. Island of Capid, PhQippines (on the reefs at low 

 water); Cimiing. 



Both the sculpture and colouring of this species are de- 

 veloped with peculiar neatness ; the former consists of a 

 regular concentric succession of compressed nodules, rang- 

 ing somewhat obliquely, the latter of an uniform yellow or 

 light orange brown, encircled in the interspaces of the 

 ridges by a fine cord of a darker brown, whilst the base, 

 apex, and aperture, are either white, or delicately pink. 



Species 21. (Mus. Cuming.) 



RiciNULA CHAIDEA. Riciti. testd ovatd, crassd, ponderosd, 

 spird subacuminatd, anfractibus tumidiusculis, oblique 

 concentrice costatis, costis rudis, obtuse tuberculatis, 

 transversim sulcatis ; albidd aut lutescente, aperturd 

 albd. 



The CONSUMED Ricinula. Shell ovate, thick, ponderous, 

 spire a little acuminated, whorls rather swollen, ob- 

 liquely concentrically ribbed, ribs rude, obtusely tu- 

 bercidated, transversely grooved; whitish or yellowish, 

 aperture white. 



Purpura chaidea, Duclos, Annales, Sci. Nat. 1832. 

 Purpura Nassoides, Quoy and Gaimard. 



Hab. Island of Masbate, PhUippines (on the reefs at low 

 water); Cuming. 



A short stout ponderous shell, having very much the 

 aspect of a Nassa. 



