FISSURELLA.— Plate X. 



vali. 



Species 70. (ilus. Cuming.) 



PllSSUKELLA HONDURASENSIS. liss. tnlct oblongc 



subdepresso-convexd, radiatbn costatd, codis 

 confertk, (gqualibus, lineis concentricis subobtmis uo- 

 doso-cancellatis, orijicio ovali, amplo, autice incUnato, 

 Meribus leviter conlracto ; rosaceo-albicante, versus 

 marginem cinereo-fiiscescente thwtd, poiie orifirium 

 ■lubcfernled. 



This Honduras Fissurklla. Shell oblong-oval, 

 rather depressly convex, radiatdy ribbed, ribs nu- 

 merous, close-set, equal, nodosely cancellated mth 

 rather obtuse concentric lines, orifice oval, large, 

 inclined anteriorly, slightly contracted at the sides ; 

 ])inkish-white, light ash-l)rovpn towards the margin, 

 bluish behind the orifice. 



Hall. Honduras ; Dyson. 



Of a delicate flesh-pink white, with tlie ribs cipial, 



not varying alternately, and finely nodose, where crossed 



by the concentric lines. 



In 7'^. Listeri, and other species, distinguished by blue 



coloimng around the orifice, the colour mostly prevails in 



front, in this it is situated posteriorly. 



Species 71. (Mus. Cuming.) 



PissuRELLA Listeri. Mss. testa sub quad rato-ovatd, de- 

 pressiusculd, costis concentricis et radiantibus fortiter 

 nodoso-clathratd, interstitiis profundi excavatis, ori- 

 ficio oblongo, subamplo, antice inclinato ; virescente- 

 albd, intense viridi plus minusve tinctd et variegatd, 

 circa orificium crerulescente. 



Lister's Tissurella. SlicU somewliat squarely ovate, 

 rather depressed, strongly nodosely latticed with 

 concentric and radiating ribs, the interspaces being 

 deeply excavated, orifice oblong, rather large, in- 

 clined anteriorly ; greenish-white, more or less 

 stained and variegated with dark green, bluish 

 around the orifice. 



D'Orbigny, Voy. dans TAmcr. Mcrid. Moll. p. 476. 

 Fmurella G-raca, Lamarck. 



Ihb. West Indies. 



Named anew by D'Orbigny, for the reasons given 

 under the head of F. reticulata, from which it differs 

 principally in having the sculpture so much more strongly 

 latticed, and nodose, rather than squamate, at the point 

 of crossing. 



