ii e 



354 On ike genus Pompholyx and its Alios. 



Family AXCYUILE. Menke. L828. 



Lateral jaws present. Teeth resembling Limnasa. Shell 

 patelliform. Hermaphrodite, br* ~ * 

 reciprocal impregnation, as arc t 



Group A. S 



( renua Acroloxiu 



Lateral plates not continuous \ 

 simple, the pulmonary orifice el< 

 ch's suhulate, stout, short. Geni 

 with the apex inclined to the rig 



Type Acroloxus lacustris = /' 



Genus Ancylns* 



Lateral plates fused with the 

 margin as in Acroloxus. Genita 

 dined to the left. 



Type Ancylvs flv/viatilis. M ii 1 



Genus BrondeUa, 



Soft parts unknown. 



Shell Bhining, with an undulal 

 ribs which radiate from the b 

 slightly inclined to the left. 



Type Brondelia Drouetiana = 



f ( icnus VaJU a, -'a nniiis. Bone 



nensis Rouse. 1842, et Yah 



Shdl large (125 mill, long, VI 



• Hiis grant inhabits tin- fon-st* of Alj 



dnijiji ra '.v from the water. 



f Thli rrauudtnblt grani in admitted 



M M I). -ii.iviM and Bonignignati It mm 

 i ■ tuu united with it. perhftpf witho 



■ .•• VateMu nnetta ! 



