New and Rare Fossih. 313 



In working out the several species of Corbula occurring in the 

 Mallee bores, it was tliscovered that a discrepancy exists regard- 

 ing tht' identity of the Kalinman species found at Grange Burn 

 and (ithLM- h)(.alities. which has hitherto been referred to Hinds' 

 species C. scaphoides. The hitter species, a figure <>f whicli is 

 given in the Challenger Report, i is. however, a high, stiongly uni- 

 bonate form with deep sulci, generally comparable with C. epha- 

 milla, Tate, 2 but not so heavily structured. 



One of us (C.J.G.), in writing to Mr. E. A. Smith, of the British 

 Museum, has had the benefit of that gentleman's dictum regarding 

 the Victorian species. C. coxi, Pilsbry. which Mr. Smith recog- 

 nised amongst specimens sent to him, and which he compared with 

 typical specimens in the British Museum (Nat. History). London. 

 These specimens have been carefully studied in comparison with 

 some of ours from the Mallee bores, which show them to be identi- 

 cal ; and at the same time agreeing with specimens in tlie Dennant 

 collection from the Victorian Kalimnan. determined by that author 

 as C . scaphoides, Hinds. 



Distribution.— Bore 1, 215-244: feet. Bore 3, 266 feet. Bore 4, 

 163-170 feet. Bore 5, 155-159 feet; 163-175 feet; 175-189 feet. 

 Bore 6, 114-15U feet; 158-161 feet. Bore 8, 165-180 feet; 180-199 

 feet; 204-210 feet; 210-219 feet. Bore 9, 254-256 feet; 263-273 

 feet; 315-325 feet. Bore 10, 160-186 feet; 186-190 feet; 225-230 

 feet; 230-254 feet; 254-296 feet; 310-320 feet. 



Corbula kphamilla, Tate. 



CorhuJd fphamlUd, Tate. 1887. Trans. Koy. Soc. S. Aust. 

 ol. ix. p. 176. pi. xii. figs. 13«7, />, 14. 



In the course of diagnosing the differential characters of the 

 Corhuloe in the Mallee borings, the close relationship of ('. tun/' 

 cata. Hinds, 5 to the above species was very apparent. The only 

 difference being the usually heavy, iiicrassate chai-acter of the shell 

 cavity of the anterior area. 



The trur ('. scd plioidcs. Hinds, 4 is also extremely close, both in 

 shape and ornament, when tlie adult shells are compared; the chief 



1. Hinds, Proo. Zool. Soc. Loud., pt. xi., 1843, p. 56. E. .\. Smith, Rep. Chall., Zool. vol. xiii. 

 pt. XXXV., 1885, p. 32, pi. vii., fij,'s. 3, 3n, 36. 



2. Tr.ans. Roy. Soc. S. Austr., vol. ix., 1887, p. 176, pi. xvii., fij,'s. VMt, b, 14. 



3. Proc. Zool. Soc. Ix)nd., 1843, p. 55. 



4. Cf. E. A. Siiiitti, loc. supi-n cit. 



