Zoological Society. 69 



Melania conulus. M. testd minute et crebrissimk striatd, co- 

 nicd, subtenui, fused ; spird obtusd ; suturis linearibus ; anfrac- 

 tibus septem, planulatis, uno-vittatis ; aperturd elongato-ovatd, 

 ad basim angulatd, intus fused; eolumelld tortd. 

 Hab. Small streams, Fernando Po, West Africa. 

 Length 1*4, diam. '5 of an inch. 



Refnarks. — This interesting species is remarkable for its peculiar 

 striae, which cover the whole surface of all the whorls. The lines 

 are irregular, and so minute as to require the microscope to detect 

 them. A little above the middle of the whorl there is an obscure, 

 dark, rather broad band. The middle of the whorl is somewhat 

 angular. The aperture is not quite one-half the length of the shell, 

 and is somewhat angular below. 



Melania obruta. M. testd striatd, conoided, erassd, bivitiatd, 

 fused ; spird subelevatd ; suturis impressis ; anfraetibus septem, 

 convexiuseuUs, lineis crebris elevatis ; aperturd parvuld, sub- 

 patuld, intus albd et bivittatd, ad basim emarginatd et retusd; 

 labro crenulato et arcuato. 



Hab. ? 



Length 1*3, diam. '5 of an inch. 



Remarks. — In general form and outline this species is very like to 

 the striate variety of M. Virginica, Say. It differs in being thicker 

 and in having a crenulate and patulous lip. In the four specimens 

 submitted, the two dark brown bands are beautifully distinct inside, 

 and stop short of the margin. Three specimens have a suddenly 

 enlarged body whorl. Two of the specimens have obscure, longitu- 

 dinal brown marks. The aperture is about one-third the length of 

 the shell, is very much curved on the edge of the lip, and disposed 

 to be canalicidate at the base. The striae are coarse and elevated. 



Melania turriculus. M. testd striatd, conoided, subtenui, 

 obscure maculatd, corned, spird subelevatd ; suturis impressis ; 

 anfraetibus novem, convexiuseuUs, lineis subraris impressis, su- 

 perne angulatis ; aperturd parvd, sub constrict d, intus albidd et 

 obscure maculatd, ad basim rotundd; eolumelld regulariter cur- 

 vatd. 

 Hab. Small rivers, Calanang, province of Bai, Luzon, Philippines. 

 Length r2, diam. '4 of an inch. 



Remarks. — This species, like M. obruta, resembles in size and 

 outline very closely M. Virginica, Say. It differs from the former in 

 being less thick, in being maculate and not banded, and in having 

 impressed lines. It differs from the latter in being maculate, and in 

 being angular immediately under the suture. The aperture is rather 

 more than one-third the length of the shell, angular above and 

 rounded below. The operculum has its polar point somewhat re- 

 moved from the lower margin. 



Melania apis. M. testd striatd, corned, tenui, obscur^ granosd, 

 rufo-castaned; spird obtusd; suturis irregulariter impressis ; an- 

 fraetibus convexiSf lineis paucis elevatis; aperturd parvd, sub- 



