316 Chapman and Gabriel: 



ever, in its more trochoid form, in tlie stronger thiead-like surface 

 ornament, and in the excavated sutures. 



Observation.^. — A well preserved but aberrant or distorted 

 variant of this species occurs in the Dennant Collection (Nat. 

 Museum), from the Lower beds of Muddy Creek (Balcombian). 



Di.-<fribiifio/i.—Bort^ 8. 180-199 feet. 



Fam. TROCHIDAE. 

 Genus EUCHELUS. Philippi. 



ErcuKLUS BACC.\TUS, Menke sp. (Plate XXVI., Fig. 14). 



Monodonta harrafa. Menke. 184*3, Moll. Nov. HoU., p. 14,. 



No. 5. 

 Eiichehi^ hnrratiis, Menke, sp., Tryon, 1889. Man. Conch., 

 p. 435, pi. Ixii. figs. 72, 73. 

 Oh.se r vat 1 0/1. — The Mallee example appears at first sight to have 

 a neater and more concise ornament than fresh shells of this living 

 species. The difference, however, appears to be more apparent 

 than real, and produced by the process of fossilisation. In the 

 characters of the beaded spirals, the obliquely interstriated areas 

 and the absence of a true umbilicus, it agrees with the somewhat 

 variable species E. hoccafnx. The fossil specimen here occurs in 

 a mixed Janjukian and Kalimnan fauna, but the shell is probably 

 of the latter age. 



D'lKtrihuf ion. —Bora 5, 175-189 feet. 



Cenus CLANCITHI8, Montfort. 



ClancULUs sp., afF. ALOYSII, T. Woods. 



C'lancvlns aloydi^ T. Woods, 1876, Proc. 11. Soc. Tas., p. 

 155. Trochu.< (f'In/ici//iis) (iJof/.^ii, T. Woods sp., Tryon, 

 1889, Man. Conch., vol. xi. \^. 59, pi. xiv. figs. 20-23. 

 Ob.strrafion.^. — A specimen in the iieanic stage occurs in one of 

 the bores, the ornament of whirli is clearly that of a Clanriilus. In 

 its subacute liration and iiitrrstiiatc areas, it most nearly re- 

 sembles the above species., f.'. ti/o//.<ii is a connnon living Australian 

 species. 



Dlsf, -ihiif ion. —lioiv 3, 201-220 feet. 



