68 CALYPTR^DJS. 



profundo trigone albo. — Dark brown, deeply cap-shaped, with 

 a hooked apex curved downwards. 



15. ROSTRATA, f. 116, 117, G. B. Ad. — Quam G. adunca 

 altior, apice magis elevato, margine regulariter ovato ; septo 

 parvo. — Of a more regularly oval form and more freely 

 raised apex than 0. uncinata. 



16. ADSPERSA, f. 126, 127, Dunker. — Augusta oblonga 

 pallida maculis fusco-purpureis adspersa; apice terminali, 

 obtuso; septo leviter arcuato. — The specimens figured iu 

 Dunker's work are irregular in form, but narrow and with 

 obtuse apices. 



17. siTCHANA, f. 128, 129, Middendorf. — Succinea, oblique 

 capuliformis, convexa ; apice postice marginal! septo angus- 

 tissimo, profunde recedenti. 



18. LENTiGiNOSA, f. 130, \?>Q*,Soiverhy. — Irregularis, luteo- 

 castanea, castaneo-purpurascenti maculata, frequenter latera- 

 liter compressa, dorso frequenter elevato, apice libero, un- 

 cinato, declivi; septo albo, obliquo. — The peculiar lentigi- 

 nous spots and general appearance seem to bring the above 

 two forms together ; the mode of growth preventing uni- 

 formity of shape. 



19. HEPATiCA, f. 131, 132, Deshayes. — Irregulariter sub- 

 ovata, Isevis, intense fuscata, apice producto, septo albo sub- 

 oblique arcuato. — When young, the form is ovate, as in f. 

 132. Afterwards the shape depends on conditions of growth. 

 The interior is intensely blackish-brown. 



20. INCURVA, f. 133, 134, 135, Brode.ri'p. — Irregulariter 

 oblonga, castaneo-nigricanti ; longitudinaliter lirata ; apice 

 producto, deflecto ; septo albo, lato, margine arcuato. — Traces 

 of the lirse may be seen on the back of the variety named 

 incurva by Broderip, although they are not so strong as in 

 the variety lirata of Eeeve. 



21. CONTORTA, f. 137, 138, Quay. — Albida linguasformis, 

 pallida maculata, contorta ; septo parvo, trigono. — There is 

 little character to be traced in this pale, irregularly-formed 

 species. 



22. UNGUiFORMis, f. 139, 140, Lamarch — Alba tenuis, 

 oblonga, ad terminum subquadrata, dorso decurvo vel recurvo. 



