350 LAND AND FRESH-WATER SHELLS. 



concave at the sides, shouldered above, usually with a spiral shallow 

 groove and a few stri* near the shonlder, and marked with fine in- 

 cremental striee. Suture deep, slightly oblique. Last whorl long, 

 finely transversely striated, most distincil}^ at the base. Aperture 

 elongate-pyriform, acute above, effuse at the base. Outer lip thin, 

 sharp, accurate, and prominent at the middle. Columellar margin 

 rather thickly covered with callus, united above to the outer lip. 

 Length of two specimens, consistingof five whorls 30 and 25 millim.; 

 diameter 11 and 10^; apertin-e 14 and 12 long, G and 5 wide. 



(45) Melania ugiensis. (Plate XXXVIL fig. 4.) Shell suljulate, acuminate, 



beneath the epidermis (which is wanting in the specimens at hand), 

 of a dirty, pale, livid, or purplish tint. Whorls probably about 14 

 in number ; the eleven remaining ai-e a little convex, rather slowlv 

 enlarging, and sculptured with close-set, obliquish, fine riblets, ^vhich 

 are crossed by crowded spiral stri?e. Last whorl large, with the 

 riblets rather obsolete below the middle, and very close too-ether, 

 much more numerous than those upon the upper whorls. Aperture 

 obliquely pear-sliaped. Length 25 millim., diameter 8 ; aperture 

 8i long, 4.^ wide. 



(46) Mei'inia sanctce annm. (Plate XXXVIL figs.^ 5, 5 «.) Shell small, 



acuminately pyramidal, somewhat eroded towards the aj)ex, covered 

 with a 3^ellowish-olive epidermis, and sometimes marked with a few 

 indistinct, reddish, irregular spots, and lines near the middle of the 

 body-whorl. Whorls 5-6 remaining, flattish at the sides, divided by 

 a slightly, oblique, distinct suture, all with the excejjtion of the last 

 one or two more or less distinctly, longitudinally, finely plicate ; the 

 plicse are more conspicuous in some specimens than in otliers, being 

 at times entirely eroded. The other sculpture consists of fine line.^ 

 of gi'owth, and a few rather distant spiral striae, which cut across 

 the incremental lines and produce a puckered appearance. Aperture 

 elongate, pyriform, pjale bluish within. Length of specimen consis- 

 ing of six whorls 13 millim., diameter 5 ; aperture 5 long and 2.', 

 wide. 



(47) Melanin guppyi. (Plate XXXVIL figs. 6, Qa.) Shell slenderly 



acuminate, covered with an olive-brown epidermis. Whorls about 

 14, divided by a very oblique, deepish suture, concave above the 

 middle and somewhat convex below it, and then contracted ; orna- 

 mented with a few spiral series of nodules (about five on the upper 

 whorls) and rather "ndistinct, very oblique and flexuous, longitudinal 

 ridges, upon which the nodules rests, also exhibiting very sloping 

 and flexuous lines of growth ; the most conspicuous rows of granules 

 are near the middle of the whorls. Aperture pyriform. Outer lip 

 thin, remarkably sinuated above towards the suture, and arcuatelv 

 prominent below. Columellar margin oblique, straightish, covered 

 with a callus, curving into the broad basal siaus. Length 31 

 millim., diameter 7 ; aperture 9 long, 4 wide. 



I'his is a very remarkable and distinct species, with a very 

 drawn-out spire, ])ecujiar granuled sculpture, and a deeply sinuated 

 labrum. I have much pleasure in naming it after Mr. Guppy. 

 (66) Unio fjiippyi- (Plate XXXVIL figs. 8-8 b.) Shell elongate, very 

 inequilateral, usually a little longer than twice the height, com- 

 pressed, covered with a l)Iackish-brown epidermis, exhibiting strong 

 lines of growth, and very faint radiating substriation, and m irked 

 with fine wrinklings at the eroded beaks, which are small and placed 

 quite near the anterior exti'emity. Dorsal margin behind the um- 



