Zoological Society. 367 



externa tenui, labio interno subexpanso ; umbUico parvo ; colore 

 albo. 

 Hub. Ticao, Philippinarum. H. Cuming legit. 

 The imperfect specimen in Mr. Cuming's collection is the only one 

 which we have seen. Taken on reefs. 



ScALARiA iRUEGULAxiis.Thes. Conch, part. 4. pi. 33. f.40, 60. Seal, 

 testa ventricosd, acuminatd, Iccvi ; anfractibus contigiiis, rotundatis, 

 gradatim cresceutibus ; suturd distinctd ; varicibus tenuibus, nurnC' 

 rosis, intequalibus , nonnulUs maynis ; aperturd oblique ovali ; urn- 

 bilico mediocri ; colore albo. 

 Hab. Catanauan, pr. Tayabas, ins. Luzon, Philippinarum. H. Cu- 

 ming legit. 



The varices of this species are rather thin and numerous, with 

 sharp edges ; some are much thicker than others. Found in sandy 

 mud at eight to ten fathoms. 



ScALARiA iMPERiALis, Thcs. Conch. part. 4, pi. 33. f. 56, 57. 

 Seal, testd pyramidali, ventricosd, acuminatd, lavi ; anfractibus 

 magnis, rotundatis, contiguis, prope suturam elevatis, gradatim 

 crescentibus, suturd profunda; varicibus numcrosis, simplicibus, 

 versus apicem tenuibus, gradatim crescentibus, in ultimo anfractu 

 crassis, nonnullis duplicatis et triplicatis ; aperturd magnd, ovali ; 

 umbilico magna ; colore inter varices pallide fulvo, fasciis binis 

 fuscis in medio anfractds ultimi purpurea confusis. 

 Hab. Swan River. 



A beautiful pyramidal shell, with numerous regular varices, which 

 in the upper whorls are thin, but in the last whorl are thicker, some 

 of the last being doubled. The colour between the varices is dull 

 fawn, with two bands, which in the last whorl are blended with purple. 



" Description of new species of Mytilacea, &c.," l)y Sylvanus 

 Hanley, Esq. 



MoDioLA Metcalfei. Mod. testd subtriangulari, oblongd, ventricosd, 

 pastice albo-ccerulesceute, antice purpured, obsolete barbatd, epider- 

 mide fiavo-fuscescente indutd ; epidermide, prope marginem dorsa- 

 lem, subelongatum, valde elevatum, et ad extremitatem posticam 

 brevem, angustam, surs unique prominentem, nitoris expe.rte ; costd 

 umbonali, prope ad nates purpureas, acutas, obtuse siibcarinatd ; 

 angulo dorsali distincto, elevato ; margine antico subrecfo, nunquam 

 incurvato ; extremitate anticd sublinguiformi, rotundatd ; margine 

 ventrali in medio incurvato, postice valde obliqno ; superficie in- 

 terna antice purpurea tinctd. Long. 1'70; lat. 3'0 poll. 



Hab. — .'' Mus. Cuming, Hanley. 



The more prominent characters are the compressed and very di- 

 stinct dorsal angle, the purple beaks, the elevated umbonal ridge, 

 and the absence of all glossiness from the narrow strip of epidermis 

 which adjoins the ligamental edge, and from that lunule-shaped por- 

 tion which forms the posterior extremity and curves upwards to the 

 beaks. I have named it in honour of one of our most scientific 

 collectors, W. Metcalfe, Esq., of Lincoln's Inn. 



MoDiOLA STRiATULA. Mod. tcstd clongato-oblongd, angustd, sub- 

 arcuatd, subcylindraced, epidermide olivaced indutd ; laters postico 



