312 ME. E. A. SMITH ON THE 



It is in keeping with Mr. Sowerby's work tliat this species 

 should appear in 1866 as a TTnio and in 1870 as an Anodon. 



148. Unio EtTGUiiOSUs, Charpentier. 



Uiiio rugulosus, Charpentier, Xiister's Con.-Cab. 1855, part 147, pi- xliv. 



fig. 5 ; id. I. c. 1856, part 150, p. 154. 

 Hah. New Holland. 



149. TJnio iSTEPEANEKSis, Conrcid. 



Unio nepeanensis, Conrad, Proc. Acad. Nat. Sci. Philad. 1850, vol. v. 

 p. 10 ; id. Journ.Acad. Nat. Sci. Philad. ser. 2, vol. ii. p. 296, pi. xxvi. 

 fig. 4 ; Reeve's Con. Icon. fig. 110. 

 Unio depressus. Lesson, non Lamarck, Voy. Coquille, p. 427, pi- xv. 



figs. 5-5 a. 

 Unio Lessonii, Kilster, 1855, Con.-Cab. p. 135, pi. xxxvi. fig. 4 (copy 



of Lesson's figure). 

 Hal. Nepeau River, N. S. Wales {Conrad, Lesson, and Mac- 

 GilUvray). 



This species is readily distinguished by the coarse wrinkles upon 

 the umbones. These in Lesson's specimen appear to be much 

 eroded ; hence this peculiarity probably escaped his notice. The 

 form of his shell, however, with the comparatively square or 

 truncated anterior end, corresponds with that of H. nepeanensis ; 

 and since the locality quoted by him and Conrad is identical, I am 

 inclined, with the latter, to consider them belonging to the same 

 species. 



150. Unio Etansi, A. Adams Sf Angas. 



Unio (Alasmodon) Evansi, A. Adams ^- Angas, Proc. ZooL Soc. 1864, 



p. 39 ; Reeve's Con. Icon, fig, 285. 

 Hah. Lagoons of Lower Murray Eiver, South Australia 

 {Angas). 



151. Unio NOY^-HOLLANDiiE, Gray. 



Unio novse-hoUandiae, Gray, Proc. Zool. Soc. 1834, p. 57; Hanley, 



Recent Shells, p. 182. 

 Unio cucumoides, Lea, Trans. Amer. Phil. Soc. 1843, vol. viii. pi. vii. 



fig. 2 ; Reeve's Con. Icon. fig. 89 ; Kixster's Con.-Cah. p. 219, pi. Ixxiv. 



fig. 1. 

 Unio Cumingianus, Dunker, Zeitsch.f. Mai. 1852, vol. ix. p. 53. 

 Hah. Eichmond Eiver and Hunter Eiver (coll. Cuming); 

 Brisbane Eiver, N. S. "Wales (J". Mac GilUvray) ■ Macquarrie 

 Eiver (Gray). 



I can positively affirm the identity of the U. cucumoides of Lea 



