MELANIA. 



Plate II. 



Species 4. (Fig. a, b, Mus. Cuming.) 



Melania Herculea. Mel. tf>stii turritd, virescente-oli- 

 vaced, anfractibus novem ad decern, superne excavatis, 

 dAnde concentrice plicato-costatis, coslis confertis, tu- 

 bereulatis, anfractu ultimo subangulato, infra spirali- 

 ter lirato ; aperture! ovate!, ad basin proditctd. 



The Herculean Melania. Shell turreted, greenish- 

 olive, whorls nine to ten, excavately sloping round 

 the upper part, then concentrically plicately ribbed, 

 ribs close-set, tubercled, last whorl slightly angled, 

 spirally ridged below ; aperture ovate, produced at 

 the base. 



Gould, MS. in Mus. Cuming. 



Hab. Ceylon ; Thwaites. 



Of this very characteristic species I have not met with 

 any specimen in such perfect condition as one figured some 

 years ago, without a name, in Sowerby's ' Genera,' in a 

 plate which appeared more recently in my ' Conchologia 

 Systematica,' pi. 194. f. 2, with the name, erroneously 

 given, of M. variabilis, Benson, and quoted in error by M. 

 Souleyet in Zool. Voy. de la Bonite. 



Species 5. (Mus. V. d. Busch.) 



Melania lacustris. Mel. subidato-turritd, pervaria- 

 bill, luted, end rufo-fuscescente, aut nigra, anfractibus 

 septem ad octo, spiraliler liratis, ultimo longitudina- 

 liter plieato ; aperturd ovate!, fauce ceerulesceute-albd. 



The lacustrine Melania. Shell subulately turreted, 

 very variable, yellow, or reddish-brown, or black, 

 whorls seven to eight, spirally ridged, the last longi- 

 tudinally plicated ; aperture ovate, interior bluish- 

 white. 



Morelet, Test. Nov. Amer. Cent, part 1. p. 25. 



Hab. Vicinity of Yzabel, Guatemala. 



Of more solid growth, and less effused at the base than 

 M. glaphyra, but I doubt if they are distinct species. 



Species 6. (Mus. Cuming.) 



Melania ingojinata. Mel. testa turritd, olivaced, an- 

 fractibus octo ad novem, rotuudatis, spiraliler liratis, 

 /iris irregularibus, subacutis, hie illic obsolete nodosis ; 

 aperture! rotunelato-ovatd, parviusculd. 



The dyed Melania. Shell turreted, olive, whorls eight 

 to nine, rounded, spirally ridged, ridges irregular, 

 rather sharp, here and there obsoletely noduled ; 

 aperture rotundately ovate, rather small. 



Defrance, Diet. Sci. Nat. p. 469. f. 291. 

 Melania Reirvardii, De Haan. 



Hab. Island of Luzon, Philippines ; Cuming. 



Belonging to the Philippine type represented by M. as- 

 perata, into which this and the following species may 

 clearly be traced by a sufficient collocation of individual 

 specimens. 



Species 7. (Pig. a, b, Mus. Cuming.) 



Melania dactylus. Mel. teste! subidato-turritd, luteo- 

 fusce! autferrugined, anfractibus decern ad duodecim, 

 convexis, spiraliler dense elevato-strialis, longitudina- 

 li/er confertim plicalo-liratis, litis versus aperturam 

 obsoletis, anfractibus ultimis duobus vcl tribus inter- 

 elum biseriatim tubercidatis ; aperturd rotundato-ovatd. 



The finger Melania. Shell subulately turreted, yel- 

 lowish-brown or rust-colour, whorls ten to twelve, 

 convex, spirally densely elevately striated, longitudi- 

 nally closely plicately ridged, ridges obsolete towards 

 the aperture, last two or three whorls sometimes en- 

 circled with two rows of tubercles; aperture rotun- 

 dately ovate. 



Lea, Pro. Zool. Soc. 1850, p. 191. 



Hab. Islands Guimaras, Mindanao, Luzon, and Leyte, 

 Philippines (in small streams) ; Cuming. 



M. dad gins is of the same Protean character as M. as- 

 perata from the same locality, and is, perhaps, a variety 

 of that species. It may, however, be observed that the 

 longitudinal sculpture, be it ribs or plaits, is uniformly 

 more crowded in the earlier whorls. 



Species 8. (Mus. Cuming.) 



Melania glaphyra. Mel. testa pyramidal!, olivaceo- 

 ferrugined, anfractibus octo ad novem, superne planu- 

 lato-declivibus, litis nigris nodulatis interruptis ciiigu- 

 latis, anfracius ultimi parte inferior! litis integth 

 lavibus eingn/atd ; aperturd oblongo-ovatd. ad basin 

 subprodnctd. 



The carved Melania. Shell pyramidal, olive-rust, 

 flatly sloping round the upper part, encircled witli 

 black interrupted noduled ridges, lower part of tin- 

 last whorl encircled with entire smooth ridges; aper- 

 ture oblong-ovate, slightly produced at the basi 



Morelet, Test. Nov. Amer. Cent, part 1. p. 24. 



Heib. River Usumasinta, Central America ; Morelet. 



This species has more of a pyramidal than a subulate 

 form, with the base somewhat produced. The whorls are 

 encircled with characteristic black ridges on an olive-rust 

 ground, which upon the upper part of the last whorl 

 are broken up into beads, raised upon obscure conci ntrii 

 folds. Towards the apex the sculpture is obsoi- 



November, 1859. 



