FISSURELLID.E. 



217 



42. polygonalis (f. 78, 90), A. Adams. — Elongato-ovalis, 



depresso-conica, alba, octoradiata, vertice subcentrali, postice in- 

 clinato, costis radiantibus subnodulosis, longitudinalibus (octo 

 majoribus) lineis concentricis incrementi aspera; apertura octa- 

 gonalis, margine crenulato, antice valde sinuato, sinu intus in ca- 

 nalem producto. 06s. Mr. Adams's E. denticulate/, (f. 90) is only 

 the young state of this shell. 



43. ceassilabrum (f. 79), A. Adams. — Elliptica, crassa, rudis, 

 alba, depresso-conica, vertice subcentrali, eroso, costis radiantibus, 

 distautibus, insequalibus, subaculeatis, ornata ; aperturse margine 

 crenato-deuticulato, postice recto, antice rotundato, sinuato, sinu 

 intus in canalem producto. 



44. Cumingii (f. 76), Sowi. — Oblonga, irregulariter polygona, 

 lata, valde depressa, subviridis, costis angulatis rugosis insequa- 

 libus radiata, apice paululum antice positoj fissura subquadrata. 

 Obs. Much more depressed and wide than E. scutellata, and the 

 sculpture less deeply cut and rugose. 



45. scutellata (f. 53), Beshayes. — Oblonga, irregulariter poly- 

 gona, angusta, depressa, subviridis, costis rotundis elevatis, rugo- 

 sis, valde insequalibus radiatis et liris irregularibus concentricis 

 cancellata ; apice acuto, paululum versus marginem posticum in- 

 clinato ; fissura subquadrata, cicatrice in carinam elevata. Obs. 

 Besides the points enumerated in the description of E. Cumingii, 

 this species differs from it in having the apex, nearest to the pos- 

 terior side. 



46. lata (f. 81), Quo//. — Elongato-ovalis, valde depressa, ver- 

 tice vix elevato, postice inclinato, costis radiantibus nodulosis, 

 crassis, et lineis incrementi transversis, ornata; aperturae margine 

 irregulari, crenulato, intus calloso, antice valde sinuato. 



47. imbricata (70, 71), A. Adams. — Ovato-oblonga, subquad- 

 rangularis, cinereo-albida, vertice parvo, centrali, postice incli- 

 nato, costis radiantibus imbricato-asperis, iusequalibus, et lineis 

 crassis irregularibus incrementi decussata ; aperturse margine deu- 

 tato, antice valde sinuato, sinu subquadrato, intus in canalem 

 producto. 



48. australis (f. 67, 94), Quo?/. — Ovalis, brevis, pallide fulva 

 vel cinerea, elevato-conica, costis radiantibus scabris, insequalibus 

 et lineis elevatis decussata ; costis tribus anticis majoribus, apice 

 submediano, paululum recurvo ; sinu parvo, extus in costam, in- 

 tus in canalem producto. Obs. In this species the sides are less 

 compressed and the sculpture less coarse than in E. imbricata. 

 Fig. 94 is a flattened variety. 



