ARTEMIS. 



Species 12. (Mus. Ciimiug.) 



Artemis nitens. Art. testa suborbictdari, compressd, 

 aliquanio latiore quam alta, conceidrice inciso-sulcatd, 

 liris iniermediis, apjpressis, area ligamenti simplici, 

 lunula cordatd ; alba, epidermide tenui, corned, tdiente, 

 indutd. 



The shining Artemis. Shell nearly orbicular, cora- 

 presseil, a little broader than bigh, couceutrically 

 eugraved with grooves, intermediate ridges appressed, 

 area of the ligament simple, lunule cordate ; white, 

 covered with a thin, shining, horny epidermis. 



Hab. ? 



Very like A. giyantea in general aspect, but not agreeing 

 suiEcieutly in form to be considered as the young of it. 

 The umboes are more produced, whilst the shell is com- 

 pressed and proportionably wider. 



Species 13. (Mus. Cuming.) 



Aktejiis lamellata. Art. testa suborbictdari, com- 

 pressiusculd, aliquanth latiore qttam. alia, circa um- 

 bones subtilissime striata, deinde sulcata et lamellata, 

 lamellis binis acuiis, •mnhones versus inclinatis, ad 

 latera pauciorihus, elevatis, area ligamenti subexcavatis, 

 lamellatis, lunnld oblongo-cordatd, snbprofmidd ; alba. 

 The lamellated Artemis. Shell nearly orbicular, 

 rather compressed, a little broader than high, very 

 finely striated around the umboes, then gi-ooved and 

 lamellated, lamellse two and two, sharp, at the sides 

 fewer and more elevated, area of the ligament slightly 

 excavated, lamellated, lunule oblong-cordate, rather 

 deep; white. 

 Hab. North Australia ; Jukes. 



Distinguished from all the species by its sharp, concen- 

 tric lameUcB, which are slightly inclined back towards the 

 umboes. 



Species 14-. (Mus. Cuming.) 

 Artemis scabriuscula. Art. testa suborbiculari, con- 

 vexd, solidiuscidd, vix latioi-e quam alta, postice su- 

 perne subangulatd, concentrice tenuissime et creberrime 

 liratd, liris ad latera acide lamellaribus, area ligamenti 

 late excavatd, lamellata, margine subspinosd, lunula 

 cordatd, profunde impressd ; alba. 



The roughened Artemis. Shell nearly orbicular, eon- 

 vex, rather solid, scarcely broader than high, pos- 

 teriorly sUghtly angled at the upper part, concen- 

 trieaUy very finely and closely ridged, sharply lamellar 

 at the sides, ai'ea of the ligament broadly excavated, 

 lamellated, somewhat spinose at the margin, lunule 

 heart-shaped, deeply impressed ; white. 



Philippi, AbbUd. und Besch. Conch, vol. ii. p. 230. Cgtii. 

 pi. 5. f. 2. 



Hab. ? 



Of more solid growth than the preceding species, with 

 the ridges less eminently raised in lamellae at the sides, 

 notwithstanding that they are more spinose on the pos- 

 terior angle, owing to the deeper excavation of the liga- 

 mentary area. 



Species 15. (Mus. Cuming.) 



Artemis susauADRATA. Art. testa subquadrato-orbicu- 

 lari, tenui, medio tumidiusculd, basin versus obscure 

 attenuatd, concentrice creberrinie et subtilissime striata, 

 area ligamenti simplici, lunula nulla; sordide alba, 

 epidermide tenuissimd indutd. 



The sauARE-iNCLiNED Artemis. Shell somewhat 

 squarely orbicular, thin, rather swollen in the middle, 

 obscurely attenuated towards the base, concentrically 

 very closely and finely striated, area of the ligament 

 simple, no lunule ; dead white, covered with a vt-ry 

 thin epidermis. 



Hanley, Wood, Index Test. Supp. PL 15. f. 39. 



Hab. St. Elena, West Columbia (in sandy mud at low 

 water), and Lobos Island, Peru (in sandy mud at a 

 depth of from six to seventeen fathoms) ; Cuming. 

 This species is typically distinct from all others of the 



genus, very thin and tumid, without any lunule. 



Species IG. (Mus. Cuming.) 



Artemis incisa. Art. testa orbicidari, convexo-coHqiressd, 

 undique conspicue concentrice inciso-sulcatd, liris iider- 

 mediis regularibus, appressis, ad latera subaaUk, area 

 ligamenti simplici, lunula oblongo-cordatd, impressd ; 

 nitide alba. 



The ENGRAVED Artemis. Shell orbicular, coiivcxly 

 compressed, conspicuously eoneentrieally sharply 



February, 1850. 



