30 MUREX. 



part of the whorls and three straighter on the canal, which is 

 thin and short. Gulf of California. 



134. obtusus, f.173, Sowerby. — Testa octovaricosa, pyri- 

 formi, pallide cinerea, ad costas medio anfractuum castaneo 

 maculata, inter varices spiraliter costata, varicibus crassis, 

 tuberculatis, idtimo anfractu ad canalem contracto ; canali 

 breviusculo varicibus obtuse spinuloso ; spira brevi, obtusa. — 

 Formed like M. humilis, but not having the varices fringed 

 in the same manner, and of a thicker substance. 



135. niTMiLis, f. 142, Brodeunp. — Testa subpyriformis 

 albido-fuscescens, spiraliter conspicue distanter lirata, inter- 

 stitiis pone varices foveolatis ; varicibus numerosis, duplicato- 

 squamosis ; apertura ovata, margine externo laqueato, canali 

 breviusculo gradatim attenuato squamoso-bifrondoso ; spira 

 brevi, anfractibus supra liras planulatis. — Pear-shaped, with 

 recurved fringed varices and strong ridges between. 



136. Noreisii, f. 147, Reeve. — Testa breviter pyriformis, 

 tenuis albida, spiraliter conspicue lirata ; varicibus senis 

 tenuiter ramoso-frondosis, frondibus castaneis, retrorsim cris- 

 patis, canali tenui recurvo brevi, superne triseriatim 

 crispato ; spira brevi, anfractibus rotundis. — This species 

 might, almost be described as a more refined form of M. 

 humilis, with beautifully curled and delicately branched 

 fronds on the varices. 



137. crispus, f. 164, Broderip. — Testa pyriformis, albido- 

 grisea, spiraliter costata, multivaricosa ; varicibus frondosis, 

 frondis fuscis, trigonis, retrorso-crispatis ; canali clauso, 

 breviusculo ; spira depressa, conica, anfractibus ad suturam 

 depresso-excavatis. — This curious shell has the general form 

 and some of the characters of the scor-pio and secundus 

 group. 



Sect. VII. Pyriform, with pits at the suture. 



138. oxycantha, f. 145, Broderip. — Testa pyriformis, 

 albido-fusca spiraliter distanter lirata, dense striata; vari- 

 cibus septenis, latis, tumidis, idtimo anfractu fronte digitatis ; 

 spira brevi, anfractibus superne foveolatis ; apertura ovata, 

 margine laqueato. — The spines develope, in the later stages 

 of growth, into long straight digits. 



139. melanamathos, f. 144, Gmeliii. — Testa globoso-pyri- 

 formis, spiraliter costata, varicibus octonis nigris spinosis, 



