Zoological Society. 367 



externo tenui, labio interno subexpanso ; umbilico parvo ; colore 

 albo. 

 Hab. 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 irregularis, Thes. Conch, part. 4. pi. 33. f.40, 60. Seal, 

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

 . gradatim crescentibus ; suturd distinctd ; varicibus tenuibus, nume- 

 rosis, inaqualibus, nonnullis magnis ; aperturd oblique ovali ; um- 

 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, Thes. Conch, part. 4. pi. 33. f. 56, 57. 

 Seal, testd pyramidali y ventricosd, acuminatd, Iccvi ; anfractibus 

 magnis, rotundatis, contiguis, prope suturam elevatis, gradatim 

 crescentibus, suturd profunda; varicibus numerosis, simplicibus, 

 versus apicem tenuibus, gradatim crescentibus, in ultimo anfractu 

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

 umbilico magno ; colore inter varices pallide fulvo, fasciis binis 

 fuscis in medio anfractds ultimi purpureo 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," by Sylvanus 

 Hanley, Esq. 



Modiola Metcalfei. Mod. testd subtriangulari, oblong a, ventricosd, 

 postice albo-ccerulescente, antice purpurea, obsolete barbatd, epider- 

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

 lem, subelongatum, valde elevatum, et ad extremitatem posticam 

 brevem, angustam, sursumque prominentem, nitoris experte ; costd 

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

 angulo dorsali distincto, elevato ; margine antico subrecto, nunquam 

 incurvato ; exiremitate anticd sublinguiformi, rotundatd ; margine 

 vetitrali in medio incurvato, postice valde obliquo ; superficie in- 

 ternd antice purpureo 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. testd elongato-oblongd, angustd, sub- 

 arcuatd, subcylindraced, epidermide olivaced indutd ,• laters postico 



