P H Y S A. 



viir. 



Spccii's ,J7. (Mus. Brit.) 



PiivsA Vanimemexexsis. rii)f. te.^li'i sdiiih'i, fiilKjundrati'i, 

 fumoso-cornca ; fpird hrcfi, aiifhiclibun jxiufis, suh- 

 aiiffukitis ; ultimo anfractu obloiign, pro/ie sutnram 

 angulato ; ajwrturd siiliqumlniti'i, hitu.< obscure 

 purpiirascenti, labia exfciiic aiilice i'xpiiaf:i'i, calu- 

 melld tofliut, retrorsd. 



Van- Diemen's Physa. Shell solid, rather square, 

 smoky horn; spire short, whorls few, subapgular ; 

 last whorl obloug, angular near the suture ; 

 aperture squarish, dull purplish withiu, outer lip 

 anteriorly expanded, columella tortuous, turned 



SoWEKHT. 



Hah. Van Diemen's Land. 



•_)ra rather square oblong form, this s])ecies presents 

 an angular appearance somewhat unusual in the geiuis. 

 It is, however, only in quite mature specimens that the 

 angularity appears strongly. 



Species 58. (Mus. Brit.) 



riiYSA Walbei:gii. PIi;/. iestd elonjatd, turritd, pallidd ; 

 spird ehvatd, anfractilms quinque convexiuscvJis, 

 anfractu ultimo mbovato, latcribus rectiusculis ; 

 aptrlurd parvd, ohiongd ; plied columellari pro- 

 mine.iiti, tortiid. 



Walberg's Physa. Shell elongated, turreted, pale ; 

 spire elevated, whorls five rather convex, last 

 whorl a little oval, sides a little straight ; aperture 

 small, oblong; columellar plait prominent, tortuous. 



SoWEREY. 



Hah. River Nile, Egypt. 



Species 59. (Mus. Taylor.) 



Physa aciculata. Phi/, testd clomjatd, pyramidatd, 

 attenuatd, /umoso-corned, semipelhwidd ; spird 



c'leriitd, wuiiiiimtd, anfractibus sex, obliqim ; ultimo 

 aiifraclv siili/'ii.<i/i,riiii ; aperturd breviusculd, colu- 

 inelld tortitd, albidd, retrorsd. 

 The XEEDLE-SHArED Physa. Shell elongated, pyramidal, 

 attenuated, smoky -horn, semlpellucid ; spire 

 elevated, acuminated, whorls six, oblique ; last 

 whorl rather fusiform ; aperture rather short, 

 columella tortuous, whitish, turned backwards. 



SOWEEBY, 



Hub. New South Wales. 



Species OO. (Fig. a, b, Mus. Sowerby.) 



PilYSA tetiuca. rill/, testd ovutd, soliild, licrif/idd, 

 j/a/lidcfiilvd, fasciis loiigitiidinalibus 7-aris castaiu-is 

 notiitd ; spird bnridsrul,}, obtiisd, anfractu pemd- 

 tiiHO tiiiiddo; iilliino (iii/riiiiu oblongo ; apjcrturd 

 iiitiis castaiieo iiuinjiiudd. 



The eude Physa. Shell ovate, solid, smooth, pale 

 fulvous, marked with rare longitudinal chestnut 

 bauds ; spire rather short, obtuse, penultimate 

 whorl tumid ; last whorl oblong ; aperture chestnut, 

 bordered within. 



MoRELET. Journal de Conchyliologie, vol. xvi. f 325. 



Uah. Angola and Benguela. 



Species Gl. (Mus. Taylor.) 



Physa subundata. Phy. testd fusco-oUmced, ventri- 

 cosd, coiicentrice leviter imdulatd ; spird brevius- 

 culd, apice acumiiiato, anfractu penuUimo Mo, 

 suhiingulato ; nlliiiio anfractu mugno, jn-ope suturam 

 tumido, rolundatim angulato ; apertvrd magnd, 

 intiis projie marginem castaneo strigatd ; plied 

 columellan crassiusculd, tortud. 



The slightly-waved Physa. Shell olive-brown, 

 ventricose, concentrically slightly undulated ; spire 

 rather short, apex acuminated, penultimate whorl 

 broad, rather angular, last whorl large, swelled 



April, 1873. 



