168 MALACOZOA. GASTEROPODA. IPECTIXIBRANCHIATA. 



longed anteriorly into a nearly straight narrow canalj 

 sometimes closed by the meeting of its margins. 



1. Murex Erlndceus. Hedgehog Roclc-SheU. 



Shell ovate, with seven or eight moderately convex turns, 

 which are scabrous, with six or seven transverse prominent 

 ribs, crossed by spiral elevated striae, and imbricated all over 

 with small arcuate squamiform lamellce ; the spire tapering to 

 a small point ; the aperture oval, with the outer lip thick and 

 denticidate internally, the inner lip smooth and glossy, the 

 canal elongated and closed by the meeting of its two edges ; 

 the colour dull white, or brownish, sometimes banded or tesse- 

 lated with dark brown or reddish-brown. Length an inch and 

 a-half or somewhat more, breadth about two-thirds of the 

 length. 



Two broken specimens, or rather fragments, found among 

 shell sand, from the Bay of Cruden, sent by jMr. Alexander 

 Murray, in November, 1842. 



Murex Erinaceus. Linn. Syst. Nat. 1276. — Murex Erinaceus. 

 Penn. Brit. Zool. iv. — Murex Erinaceus. Mont. Test. Brit. 259. — 

 Triton Erinaceus. Flem. Brit. Anim. 356. 



Genus 2. Fusus. Spindle-Shell. 



Animal elongated ; the body spiral ; with two taper- 

 ing depressed tentacula, much dilated at the base, and 

 ha\dng the eyes, wdiich are small, situated in a notch 

 near their middle externally ; the proboscis long, exser- 

 tile, cylindrical ; the foot large, oval, rugose ; the oper- 

 culum ovate, concentrically striate, thin, horny. 



Shell ovato-fiisiform, elongated ; the spire pointed ; 

 the aperture oval or oblong, with a more or less pro- 

 longed and slightly recurved canal at its anterior part ; 

 the outer lip thin, the columella smooth. 



The Fusi reside generally in deep water, and feed on 

 animal substances. 



1. Fusus antiquus. White Spindle-Shell. 



Shell ovato-fusifonn, thick ; with the spire tapering to a 

 small but obtuse point ; the whorls very convex, the last ven- 

 tricose, broader than the length of the spire, with distinct 



