194 PHYLLOBRANCHIA. TURBONID&. 
Cochlea parva, Da Costa Brit. Conch. 86? 
Turbo quadrifasciatus, Mont. Test. Brit. 11. 328.—Suppl. t. 
xx. f.7; M. § R. Trans. Linn. Soc. vin. 167; Flem. Edinb. 
Encycel. vii. 75; Dill. Dese. Cat. 786; Turt. Conch. Dict. 
194. 
Habitat in thalassophytis, in mari Danmoniensi et Cornubiensi 
Australi sat frequens. Color epidermidis albidus, fasciis qua- 
tuor in anfractum basilarem, duobus in alteros. Ait. $ une. 
Shell somewhat conic, strong, transparent. Whorls five. 
Aperture suborbicular. Peritreme anteriorly thick, margin 
very acutely slender. Colour white, with four fuscous bands 
on the basal, and two on all the other whorls. Height half an 
inch. 
Inhabits seaweeds: Salcombe Bay, Bigbury Bay, Torbay, 
Devon; Falmouth, Cornwall. 
Genus 85. ZACANTHUSA. 
Testa anfractibus quinque inflatis. Apertura rotundata, pos- 
tict angulata ad dextram. Sutura profunda. dpex mammil- 
latus. 
Animal ineognitum. 
Shell with five inflated whorls. Aperture rounded, with an 
angle behind on the right side. Suture deep. Apex mammil- 
lated. 
Animal unknown. 
1. ZACANTHUSA RETICULATA. 
Z. testa opaca ; anfractibus sex transversim et spiralitér elevato- 
lineatis, exindeé reticulatis. 
Turbo reticulatus, Walk. Test. Min. Rar. f. 32; Adams, Trans. 
Linn. Soc. ui. 66. t. xiii. f. 19, 20; Mont. Test. Brit. n. 322. 
—Suppl. t. xxi. f. 1; M. §& R. Trans. Linn. Soe. viii. 172 ; 
Flem. Edinb. Encycl. vii. 75; Dill. Desc. Cat. 783 ; Turt. 
Conch. Dict. 212. 
Habitat in mari Cantiaco et Hibernico haud infrequens. Co- 
lor epidermidis sordidé albus aut fuscescens. Alt. 54; une. 
Shell opake, with six whorls, with transverse and spiral 
