LUCINA.— Plate I. 



The WRINKLF.D LuciNA. Shell ovate, longer than liigb, 

 rather compressed, radiately somewhat obscurely 

 grooved, and conspicuously sculptured tlu-oughout 

 with concentric wrinkled ridges, radiating grooves 

 rather deep at the sides ; cream-colour, concentrically 

 banded with light iawn-colour. 



Eeeve, Pro. Zool. Soc. 1835, p. 68. 



Hab. ? 



This species is characterized by light fawn bands, more 



or less obscure, upon a dark cream-coloured ground ; and 



the sculpture has a peculiar wi-inkled aspect. 



Species 3. (Mus. Cuming.) 

 LuciNA PUNCTATA. Luc. testa suhorbicidari, convexd, 

 lavigatd, radiatlm sulcata, sulcis angustis, linearibus, 

 plus minus distantiius, ad latera numerosis, confertiori- 

 bus, valvis intus punctata ; alba, intus luiescenie, mar- 

 gine vivide rosed. 

 The punctured Lucina. Shell nearly orbicular, con- 

 vex, smooth, radiately grooved, gi-ooves narrow, 

 linear, more or less distant, numerous and closer 

 at the sides, valves punctured within ; white, yellow- 

 ish witliin, deep rose round the edge. 

 Fenus punctata, Linnasus, Syst. Nat. (12th edit.) p. 1134. 

 Cytherea punctata, Lamarck. 

 Lucina punctata, Deshayes. 

 Hah. Panama (in sand at low water) ; Cuming. 



Distinguished by its smooth surface and narrow radiat- 

 ing grooves, whilst each valve is conspicuously punctured 

 in the interior. 



Species 3. (Mus. Cuming.) 



Lucina tigerina. Luc. testa oblongo-ovatd, longiore 

 quam altd, plano-convexd, radiaiim multisulcatd, liris 

 concentricis undiqne creberrime decussatd ; intus extus- 

 que albd. 



The grained Lucina. Shell oblong-ovate, longer 

 than high, flatly convex, radiately many-grooved, 

 very closely decussated throughout with concentric 

 ridges ; white within and without. 



I'enus tigerina, Linnaeus, Syst. Nat. (12th edit.) p. 1133. 

 Ci/tlierea tigerina, Lamarck. 

 Lucina tigerina, Deshayes. 



Ilah. Bay of Honduras ; Dyson. 



This and the foUowdng species have been mostly con- 



fovindcd together under the head of L. tigerina. 



Species 4. (ilus. Cuming.) 



Lucina exasperata. Luc. testa suborbicula 



sulcis concentricis et radiantibus tindique creberrimi 

 decussatd, liris intermediis muricato-nodulosis ; albd, 

 margine interno rosed. 



The sharp Lucina. Shell nearly orbicular, convex, 

 very closely decussated thi-oughout with concentric 

 and radiating grooves, the interstitial ridges being 

 prickly-uoduled ; white, margin rose within. 



Hab. Bay of Honduras ; Dyson. 



This well-known sheU, which is Lamarck's Cytherea 

 tigerina var. 3, is certainly distinct from that just 

 described, which he makes the type of the species. 



