MOD 10 LA 



Species 18. (Mus. Cuming.) 



MoDinLA I'NDULATA. Mo(l. testa oUongd, gibhosd, ienui, 

 latent pustico roluudalo, antico subflabelliformi, medio 

 obtuse angulatd, ad anyulum subobscure plicato-corru- 

 gatd ; lulemente-ficscd, iiUenle. 



The waved Modiola. Shell oblong, gibbous, thin, 

 posterior side roundocl, anterior somewhat fan-shaped, 

 obtusely angled in the middle, rather obscurely pli- 

 cately wrinkled ; yellowish-brown, shining. 



Fohella undiiLata, Dunker, Pro. Zool. Soc. 18.56, p. .3<J3. 



Hab. Moluccas. 



.\ thin, shining, yellowish-brown shell, in which the an- 

 gular ridge, descending from the umboes, is faintly swollen 

 with waved folds. 



Species 19. (Mus. Cuming.) 



Modiola elegans. Mod. testa oblongd, tenui, lavigatd, 

 latere postico brevissimo, convexo, antico subjiabellalim 

 dilatato ; pellucido-viresceiite, antice purpureo tinctd 

 et transversim undald. 



The elegant Modiola. Shell oblong, thin, smooth, 

 posterior side very short, convex, anterior somewhat 

 fan-like dilated ; transparent-greenish, stained and 

 transversely waved anteriorly with purple. 



Gray, Spicilegia Zoologica, pi. 6. f 14. 

 Modiola iiironstans, Dunker. 



Hab. Gambia, West Africa. 



A delicate transparent green shell, rayed with irregular 



rose lines, crossed concentrically with purple-waved hands. 



Species 20. (Mus. Cuniiug.) 



Modiola setigera. J/orf. te.'ild oblongd, gihbosd, dense 

 radiatim liratd, liris ad latus posticum fascia lata 

 lavigatd nitente interruptd ; albidd, epidermide oliva- 

 ceo-luted indiitd, antice setigera. 



The bristly Modiola. Shell oblong, gibbous, densely 

 rayed with ridges, ridges interrupted on the posterior 

 side with a broad, smooth, shining band ; whitish, 

 covered with an olive-yellow epidermis, bristled an- 

 teriorly. 



rolsella setigera, Dmiker, Pro. Zool. Soc. IS.ifi, p. 361. 



/lab. ■:■ 



Rayed throughout with elose-set ridges and 

 rather iiibbous in form, finely bristled anteriorly. 



Species 21. (Mus. Cuming.) 



Modiola x\dstralis. Mod. testa ovato-flabelli/ormi, la- 

 tere postico Irevissimo, antico late dilatato, medio con- 

 vexd, concentrice striata ; luteo-castaned, ad marginem 

 sparsim harbatd. 



The Australian Modiola. Shell ovately fan-shaped, 

 posterior side very short, anterior broadly dilated, 

 convex in the middle, concentrically striated ; yellow- 

 ish-chestnut, sparingly bearded towards the margin. 



(jRAY, Appendix to King's Voyage. 



Hah. North Australia ; Jukes. 



Remarkable for tiie very short contracted growth of the 



posterior side, and convexly dilated form anteriorly. 



Species 22. (Mus. Cuming.) 



Modiola SenHAUSII. Mod. testa suboblongo-Jlabelliformi, 

 Ifevlgatd, tenui, latere postico brevi, subatlemiato, an- 

 tico compresse dilatato ; alba, rosacea radiatd et trans- 

 versim undulatd sub epidermide tenia lutescenie pellii- 

 cidd. 



Senhals's Modiola. Shell somewhat oblong fan- 

 shaped, smooth, thin, posterior side short, rather at- 

 tenuated, anterior compressly dilated ; white, rayed 

 and transversely waved with pale rose beneath a thin 

 yellowish transparent epidermis. 



Hub. Chusan; (Captain Benson. 



An extremely delicate species, most l>eautirully sculp- 



lunil and coloured. 



Species 23. (Fig. 23 and 21, Mus. Cuming.) 



Modiola nitens. Mod. testa elongato-trapeziformi, an- 

 gustd,postice attenuato-titmidd, valide gibboso-dislorld, 

 angulatd; intense virescente-olivaced, nitente. 



The shining Modiola. Shell elongately trapeziforni, 

 narrow, attenuately tumid posteriorly, gibbously dis- 

 torted, angled ; dark greenish-olive, shining. 



('aui'ENTER, Cat. Reigen Coll. in Brit. Mus. 



Jlab. California. 



.\ dark, greenish-olive, narrow, boat-shaped shell, with 



ilie posterior sides curiously gibbously distorted. 



