TRACHELIPODA. 75 



Murex spiralis The Spiral Murex. Plate XI. fig. 27. 



Body roundish ; separated from the spire by a narrow ridge ; 

 spire depressed ; upper volutions rounded, and terminating in an 

 obtuse apex ; canal very long and curved ; flesh-coloured, sub- 

 striated, with remote brown irregular spots. Three inches long. 

 Inhabits the Chinese seas. 



GerMs 28.— RAl^ELLA.— Lamarck. 



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

 v^ith distichous varices, and canahculated at the base ; aperture 

 rounded or ovate ; varices straight or oblique, situated at inter- 

 vals of half a volution, forming a continuous longitudinal row 

 on each side. 



RaneUa spinosa.— The Prickly Ranella. Plate XII. 

 fig. 1. Ovate, depressed, with acute, short, distinct, muricated 

 tubercles ; fawn-coloured ; varices lateral, with elongated spines ; 

 beak sulcated ; outer lip internally crenated. Two inches and 

 an eighth long. Inhabits the Indian ocean. 



Genus 29.— STRUTHIOLARIA.—Za?narc/^. 



Generic Character. — Shell ovate; spire produced; aperture 

 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 jiodulos a. — The Nodulol's Struthiolaria. 

 Plate XII. fig. 2. Ovate, grooved and striated transversely; 

 top of volutions flattened and nodulous ; cream-yellow, with un- 

 dulated brownish-yellow longitudinal lines ; lip yellow-orange 

 within. Three inches long. Inhabits New Zealand. 



Sub-Division II. — Without a constant ridge on the outer lip. 



Genus 30. — PYRULA. — Lamarck. 



Generic Character. — Shell sub-pyriform ; base with a canal, 

 ventricose above, destitute of external ridges ; spire short, 

 sometimes obtuse ; columella smooth ; outer lip without a notch. 



Pf/rulajicus.— The Fig Pyrula. Plate XII. fig. 3. Spire 

 very short; volutions rounded above; yellow-brown, spotted 



