38 PHASIS. 



Binney has figured the teeth of P. rariplicata, but judging by the 

 radula before me he makes the median teeth too short for their 

 length. He correctly figures the ectocone of the outer marginals 

 as bifid. The radula of P. bisculpta has not before been examined. 

 These shells are shaped like Phasis from which they differ in the 

 thin texture and sculpture. Some species resemble the New Zea- 

 land group Allodiscus and others are like Thysanophora or Patula. 

 All of them belong to the South African fauna, with the exception 

 of a few species from Mauritius and adjacent islands, which present 

 the same shell characters, but have hitherto been grouped in Patula 

 or Charopa. The affinities of the genus are with the Charopoid 

 Endodontas as far as present knowledge enables us to judge; and 

 they are separated from that type mainly by their distribution and 

 certain features of the teeth described above. The differences in 

 the radula are, however, of but little importance. 

 P. actinotricha Melv. & Pons. P. microscopica Kr. iii, 106. 



[viii, 143. P. minythodes Melv. & Pons. 



P. amea Kr. iii, 105. [viii, 144. 



P. aprica Kr. iii, 107. P. newtoni Nev. iii, 27. 



P. arachne Morel. P. perplicata Bens, iii, 106. 



P. aulacophora Anc. viii, 138. P. petrobia Bens, iii, 107. 

 P. bathycoele Melv. & Pons. viii, P. planti Pfr. viii, 142. 



139. platti Pfr. olim. 



P. bisculpta Bens, iii, 105. v. africse Bra. viii, 142. 



P. browningii Bens, viii, 136. P. prionacis Bens, viii, 137. 

 P. burnupi Melv. & Pons. viii, P. rariplicata Bens, iii, 107. 



[140. P. rhysodes Melv. & Pons. viii, 

 P. caldwelli (Barcl.) Bens, iii, 27. [141. 



paulus Mor. P. rivularis Kr. iii, 107. 



P. conisalea Melv. & Pons. viii, P. rodriguezensis Cr. 



[145. P. sabuletorum Bens, iii, 107. 

 P. crawfordi Melv. & Pons. viii, P. somersetensis Melv. & Pons. 



[146. [viii, 295. 



P. epetrima Melv. & Pons. viii, P. strobilodes Melv. & Pons. 



[146. [viii, 147. 



P. erateina Melv. & Pons. viii, P. tabulae Chap, viii, 139. 



[137. P. trichosteiroma Melv. & Pons. 

 P. farquhari Melv. & Pons. viii, [viii, 143. 



[147. P. tuguriolum Melv. & Pons. 

 P. glanvilliana Anc. viii, 147. [viii, 145. 



