A R T E IVI I S . 



Species 19. (Mus. Cuming.) 



Artemis subhosea. Art. testa suborbiculari, aUqumitu 

 latiore quam alia, coiwexd, concentrke nitide creberriniti 

 devato-striata, striis ad latera vix elevatioribus, area 

 liyamenti subexcavatd, lunula cordaid, impressd; pal- 

 lida romceo-spadiced. 

 The rose-tinged Aktemis. Shell nearly orbicular, a 

 little broader than high, convex, concentrically very 

 closely sculptured with neat raised striae, which are 

 scarely more elevated at the sides, area of the ligament 

 slightly excavated, luuule cordate, impressed ; pale 

 pinkish-fawn. 

 Gr.^y, Yates' New Zealand, p. oUU. 

 Hab. New Zealand. 



A. subrosea approaches very nearly in form, coloiu', aiul 

 sculpture, to the A. Japonka ; which is remarkable in two 

 species from such distant localities. The area of the 

 ligament is more widely excavated in the latter, and the 

 stria; incKned to become lamellated at the sides. 



Species 20. (Mus. Cuming.) 



Artemis alata. AH. testa snborbkidari, mpenie atteiiu- 

 utd, aUqua)ito altiore qnam laid, compresso-pland, pos- 

 tke pecuUariter sulcatd, dewide alatd, concenirke sub- 

 tilissimi inciso-striatd, sublavigatd ; alia, epidermide 

 fenumimd marginem versus bidutd. 



The winged Aetemis. Shell nearly orbicular, attenu- 

 ated at the upper part, a little higher than broad, 

 compressly flattened, peculiarly grooved, and then 

 winged posteriorly, concentrically veiy finely sculp- 

 tured with engi-aved striae, rather smooth ; white, 

 covered towards the margin with a very thin epi- 

 dermis. 



Hab. ? 



Distinguished from all other species of the genus by 



the peculiar winged structure of the upper posterior 



margin. 



Species 21. (Mus. Cuming.) 

 .Vrtemis exasperata. Art. testa subquadrato-orhkularl, 

 coHcentrke irregulariter sulcatd, liris subimdatis, hk 

 iUic coni-ergentibm, ad latera promim'ntkribiis, iiiter- 



ruptis et corrugatk, ad riiaryimm coaspicue nquamuto- 

 lamellatis, erectis, area ligamenti late excavatd, lavi- 

 gatd, lunula cordatd, lined profundi impressd circnm- 

 scriptu ; laded. 



The sharp Artemis. SheU somewhat squarely orbicular, 

 concentrically irregularly grooved, ridges slightly 

 waved, here and there converging together, more 

 prominent at the sides, interrupted and wrinkled, 

 conspicuously elevated at the margin into squamate 

 lameOae, area of the ligament broadly excavated, 

 smooth, lunule cordate, surrounded with a ilceply 

 impressed line ; cream-colom-. 



PiiiLlPPi, Abbild. und Besch. Conch, vol. iii. p. 24. Ci/fh. 

 pi. 8.f.4. 



Hab. Bay of Manilla, Island of Luzon, Pliilippinr^ (in 

 sandy mud) ; Cuming. 

 Very distinctly characterized by the irregiUar wrinkled 



growth of the concentric ridges, and by the manner in 



which they arc elevated into lamellar scales along tiie 



posterior margin. 



Snecies 22. (Mus. Brit.) 



Aktemis bilunulat.\. Art. testa subtrigono-orbiculari, 

 s^iperne attenuatd, compressd, planatd, concentrke 

 tenuissime striata, striis ad latera subprominentioribns, 

 in squamis lamellaformibus terminatis, ad latus anti- 

 cum ante marginem hmulam secundum formantibns, 

 area ligamenti latissime excavatd, lavigatd, lumtld 

 prima cordatd, subprofundi impressd, secundd oblongo- 

 cordatd, multh majore ; alia, radiis pallide ,-(m-is 

 interruptis concinne pictd. 



The double-lunuled Artemis. Shell somewhat tri- 

 angularly orbicular, attenuated at the upper part, 

 compressed, flattened, concentrically very finely stri- 

 ated, striae rather more prominent at the sides, ter- 

 minating in lamellaeform scales, before reaching the 

 edge on the anterior side forming a second lunnlc, 

 area of the ligament very broadly excavated, smo(]th, 

 first lunule cordate, rather deeply impressed, secoiul 

 lunide oblong-cordate, much the larger; white. 

 prettUy painted with light rose interrupted rays. 



Gray, Analyst Quart. Journ. 1838, Part 24. p. 300. 



Hab. Japan ; Dr. Siebold. 



An extremely interesting species, remarkable for tlie 



second lunule, which is formed by the ridiix-s terminating 



