P L I C A T U L A. 



Species 5. (Fig. a, b, c, Mus. Brit.) 



Plicatula kamosa. PH. testa ponderosd, pnipt) tim- 

 boni'S plirniiK/ue (/ihbosil, alhida ; super plirns 

 lineis viacii/i'si/iie jiiirpiiri'is vit ciniidnioncis, vel 

 cnstaiieis notat'i ; p/iciK obtii-sis medio testd paiicis, 

 versiXs marejinem in rwiiis duahus vel tribus fur- 

 catis, imp-essione viusculari rotundd, elevatd; 

 dentibus cardinalibus fttscis ; margine inteiiin 

 fusco lincato. 



The branched plicviula. Shell iiomloroiis, gciRTally 

 gibbous, whitish ; phiits marked with purijlo or cin- 

 namon or chestnut lines and spots ; plaits few in 

 the middle of the shell, divided into one or two 

 branches towards the margin, muscular impres- 

 sion rounded, elevated ; cardinal teeth brown ; 

 inner margin marked with brown lines. 



Lamauck. Anim. s. Vert., vol. vi. p. 181. 



Spondyliis pUcatus ? Gmelin. 



Plicaiida gibbosa (Lamarck). Sowerby. Genera of Shells. 



Hab. Lord Hood's Island. 



There is no other species of riicatula the plaits of 



which branch and divide so much as this. 



Species G. (Fig. a, h, Mus. Brit.) 

 Plicatula cuistata. Pli. testd parvd, trigond, albidd, 

 pUcis Tionnunquam lineatim pictis, magnis, acute 

 angulatis, pcrpaucis. 



The chested Plicatula. Shell small, trigonal, 

 whitish, the plaits sometimes linearly jiainted, 

 large, sharply angular, very few. 



Lamauck. Anim. s. Vert , vol. vi. p. 185. 



l^heatula reniformis, ? 



Ilab. Jamaica, yl. Addiiis. Honduras Bay, il/r. Z)^«ora. 



A .small species of large angular plaits. 



Species 7. (Fig. a, b, Mus. P.rit.) 



Plicatula depp.essa. Pli. te.itd solidd, super castas 

 fiiseo Uneald ct maculatd ; plicis obtusis numerosis, 

 piwdb divarieatis prope margincm hinc-ilUc bifur- 

 catis. 



The depressed Plicatula. Shell solid, lineated and 

 spotted with brown on plaits ; plaits obtuse, 

 numerous, a little divergent, here and there, near 

 the margin, bifurcated. 



Lamarck. Anim. s. Vert., vol. vi. p. 185. 



Hub. ? 



This species is more numerously and less divergently 

 plaited than Plicatula ramosa. The plaits, although 

 occasionally divided near the margin, do not branch. 

 The depression from which the species was named is 

 prob.ably an accident of growth in both the specimens 

 figured. 



October, 1873. 



