AMNiCOLA. 69 



Animal having an elongated foot, rounded posteriorly, with 

 each anterior angle produced laterally ; head halt' the breadth of 

 the foot, and protruding beyond it ; tentacula short, filiform, 

 unequal, ? the eyes seated at the side of the external base ; 

 oviparous. Inhabits fresh water. 



137. Amnicola cincta, Gould. 



Amnicola cincta, Gould, Proc. Bost. Soc. Nat. Hist, ii, p. 100 ; 

 Otia Conch, p. 199. 



Original description: Testa minuta, tenuis, ovato-oblongata, 

 impert'orata, pallide cornea, decollata : anfr. (superstitibus) 3, 

 ventricosis, ultimo magno, subcarinato, liueis volventibus, et 

 interdum fascia fusca, cincto: apertura ovata, basi admodum 

 producta, labro simplici. 



Alt. 2 mm. 



Hal). Tenasserim, Burma. 



Unfortunately no actual specimen has been accessible to the 

 author of the present work; hence the impossibility of illus- 

 trating this hitherto unfigured species. 



138. Amnicola parvula (Hutton}. 



Amnicola parvula (Button), J. A. S. B. xviii, pt. 2, p. 655 



(as Paludina). 

 Bithinia globula, Lea, Proc. Acad. Philad. 1856, viii, p. 110, 



& Jouru. Acad. Philad., n. s., vii, p. 119, pi. 22, tig. 12 (= Obs. 



Unio, xi probably) ; H. & T., 0. I. pi. 161, tigs. 8, 9. 



Original description : Animal dusky grey. 



Shell conoid, of four whorls exclusive of apex ; colour of 

 epidermis dull or dusky green ; aperture ovate, rounded below, 

 angular above ; oblique ; operculum horny ; subumbilicate, pillar 

 lip partially reflected ; sutures deep ; epidermis of the upper 

 whorls usually eroded ; transversely striated by fine lines of 

 growth. 



Alt. 4*5 mm, 



Hab. A marshy patch of ground caused by a spring oozing from 

 the side of the Kojuck Pass, at Chunirnun. 



Subfamily LITHOGLYPHIN^E. 



Animal with simple foot; radula with several basal denticu- 

 lations ; penis simple or forked ; operculum horny, spiral or 

 subspiral. 



Distribution. S.E. Europe ; S.E. Asia ; C. Africa ; N., S. and C. 

 America ; Melanesia. 



