118 SHELLS AND SHELL-FISH. PART I. 



which have been already alluded to ; premising only 

 that some doubts hang over the true nature of the type 

 which intervenes between the bat volutes (C. vespertilio) 

 and C. tuberculata, chiefly arising from our not having 

 these shells immediately before us. This point, there- 

 fore, must for the present be left open to doubt.* 



Analogies of VOLUTA and CYMBIOLA with the GENERA. 



XtphHll. i^Vfa. VQLUTi. 



Scapha. Smooth ; outer lip angulated. Mitts. HARPULA. 



Angulata. Aperture effuse; spire pointed. Braziliensis. VOLUTILITHES- 

 Magnifica. { Su ^^^ Me * apexsmooth,j ^.^toto. SCAPHELLA. 



Cymbiola tuberculata^, from having a greater number 

 of plaits than any other of its genus, seems to connect 

 Cymbiola with Harpula, through the medium of H. ful- 

 getrum; and at the same time to pass into Cymbiola 

 Braziliensis % ; which last, by its effuse aperture, the acu- 

 minated apex of its spire, and its possessing only three 

 plaits, is a perfect representation of Voluta angulata. 



(107.) The genus HARPULA commences with the 

 Harpula fulminata , one of the most interesting forms 

 in the whole family. Its shape is that of a Fasciolaria, 

 the base being produced; while the apex is so papillary 

 that it forms a large knob, almost completely round : it 

 is, in fact, the first, or terminal, whorl which is thus 

 inflated ; and the little turn which this whorl makes is 

 not on the top, but on the side. Now, this formation is 

 only seen in Scaphella papillosa, but it is indicated in 



* A full investigation of the animals of the Pacific volutes will claim 

 our first attention, after the settlement we intend making on the romantic 

 and prolific shores of New Zealand. 



f Exotic Conch. 



t Chemnitz, pi. 176. figs. 1695, 1696. The Valuta rudis,'of which a figure 

 has been published in Griff". Cuv. pi. 30. fig. 1., seems to me a typical melon 

 volute ; but nothing further is said about it, than that it is " clay-coloured 

 mixed with white." 



Ency. Meth.pl. 381. fig. 2. 



