LOWER CRKTACEOUS FOSSILS — ETIIERIDCJE. 329 



from its resemblance to some of the American species so referred 

 by Meek and Hayden, particularly A. snbovdtiiSy M. and H.,-' as 

 I have not seen the peculiar muscle scar typical of the genus. 



The specimen is much exfoliated hence the sculpture is unknown, 

 but there is no trace of radii as in Siphoiiaria samwelli, Eth. 

 fil.^^ It may be distinguished from the shell termed Acm^na (?) 

 monsivoodensis"^ by me, to which it is much more nearl}' allied by 

 the outline and relative size of its parts. 



Log. — Three miles north-west of Kensington Downs Homestead, 

 Kensington Downs, near Longreach, Queensland {^1 ./. Eiven). 



Genus Odontostomia, Flemimj, 1828. 



(Hist. Brit. Animals, 1828, p. 310). 



Odontostomia (?) cretacea, sp. nov. 



(Plate Ix , figs. 10, 10a). 



Sp. Char. — Shell robust-conoid, spire short. Whorls three 

 and a heterostrophic apex ; body whorl inclined to be globose, 

 the outline rounded : penultimate and antipenultimate whorls 

 almost straight walled ; heterostrophic apex globose, apparently 

 of more than one whorl, lying at right angles to the axis of the 

 adult shell in which it is slightly immersed. Sculpture of delicate 

 revolving lines crossed by equally fine straight transverse lines or 

 costie producing a fine cancellation. 



Obs. — This is referred to Odrnitostomia with reservation as the 

 mouth has not been seen, but the distinct heterostrophic apex 

 clearl}^ points to this genus or one of its close allies. The group 

 of Mollusca to which this shell belongs appears to be little known 

 in the Cretaceous ; Stoliczka lias described one species but it is quite 

 distinct from 0. (? ) cretacea. 



■^1 Meek and Havden — Report U. S. Geol. Survey Territories (Ilayden's), 

 ix., 1876, IX 291, pi. xviii., f. 5d and 6. 



22 Etheridge— aeol. Pal. Q'land, etc., 1892, p. 573, pi xlii., f. 9. 



23 Etheridge — Rec. Austr. Mus., v., 4, 1904, p. 251, pi. xxvii.. f. 5-7. 



