TRACHELIPODA. 87 



Section * Shells with a slender beak, always longer than the aper- 

 ture. 



** Beak thickened, not abrupt, and more or less lengthened. 



t Volutions with three varices. 



t 1 Volutions with more than three varices. 



Murex spiralis Thk Spiral Murex. Plate XL fig. 



27. Body roundish ; separated from tlie spire by a narrow 

 ridge ; spire depressed ; upper volutions rounded, and ter- 

 minating in an obtuse apex ; canal very long and curved ; 

 flesh-coloured, substriated, with remote brown irregular 

 spots. Three inches long. Inhabits the Chinese seas. 



Genus 28 R ANELL A. —ZamarcA. 



Generic Character. — Shell oval or oblong ; sub-depressed 

 with two opposite continuous varices, and canaliculated at 

 the base ; aperture rounded or ovate ; varices straight or 

 oblique, situated at intervals of half a volution, forming a 

 continuous longitudinal row on each side, 



Banella spinosa. — The Prickly Ranella. Plate XII. 

 fig. 1. Ovate, depressed, with acute, short, distinct, muri- 

 cated tubercles ; fawn-coloured ; varices lateral, with elon- 

 gated spines ; beak sulcated ; outer lip internally crenated. 

 Two inches and an eighth long. Inhabits the Indian ocean. 



Ge/ms 29.— STRUTHIOLARIA—XamarcA. 



Generic Character Shell ovate ; spire produced ; aper- 

 ture oval, with a sinus, terminated at the base by a very 

 short, straight canal without any notch ; pillar lip callous, 

 spreading; margin of outer lip sinuous, with an exterior 

 ridge. 



Struthiolaria nodulosa The Nodulous Struthio- 



LARiA. Plate XII. fig. 2. Ovate, grooved, and striated 

 transversely ; top of volutions flattened and nodulous ; 

 cream-yellow, with undulated brownish-yellow longitudinal 

 lines ; lip yellow-orange within. Three inches long. In- 

 habits New Zealand. 



h2 



