706 STUDIES ON AUSTRALIAN MOLLUSCA, xii., 



SOLECURTUS TENERIOR, Sp.nOV. 



(Plate Ixxx., figs.43, 44.) 



Shell small, thin, semitransparent, subcylindrical, rounded at 

 each end, straight on the ventral sufd postero-dorsal margins, 

 compressed medially. Colour uniform pale buff. Epidermis thin, 

 persistent, slightly wrinkled. Surface glossy. Sculpture, fine, 

 concentric, raised threads. Umbos prominent, at one-third of the 

 total length from the anterior end. Within, a raised rounded 

 clavicle extends from the hinge to the antero- ventral margin. The 

 pallial sinus is short. In the left valve are an anterior vertical 

 and a posterior horizontal cardinal. These are clasped in the 

 right valve by two anterior and posterior cardinals respectively. 

 Length, 31; height, 8*5 mm. 



ffab. —Plentiful, as dead shells, on the beach near Cardwell, 

 Queensland (type), and again at Cairns (self, 1901 and 1906). 



For Solecurtus, the value given by Dall as equivalent to 

 Pharus,* is here adopted. This genus does not seem to have 

 been previously noted as represented in Australia. Mono- 

 graphers have so regularly omitted to give characters from the 

 interior of the valve, that comparisons with foreign species are 

 difficult. Perhaps Cultellus vitreus Dunker,t from Singapore, is 

 related. 



MONTFORTIA SUBEMARGINATA Blainville. 



Emarginula suhemarginata Blainville, Diet. Sci. Nat., xi\'., 

 1819, p.382; Id., Potiez et Michaud, Galerie de Douai, i., 1838, 

 p.519, PI. xxxvi., figs. 13, 14. Eynarginula emar^ma^a Blainville, 

 Diet. Sci. Nat., xxxii., 1824, p.291. Pi. 68, f.3, and Man. Malac, 

 1825, p.501, P1.48 bis, f.3; Id., Deshayes, Encycl. Meth., Vers, 

 ii., 1830, p.l09, and Anim. s. vert., vii., 1836, p.584; Id., Rang, 

 Man. Moll., 1829, p.247 ; Id., Recluz, Rev. Zool., 1843, p.259 ; 

 Id., Tenison-Woods, Proc. Roy. Soc. Tasm., 1877, p.44. (Not E. 

 emarginata Reeve, Conch. Syst., ii., 1842, p. 23, PI. cxL, f.4K 

 Suhemargiimda emarginata Pritchard and Gatliff, Proc. Roy. Soc. 

 Vic, XV., 1903, p. 187. Emarginula australis Quoy andGaimard, 



*Dall, Trans. Wagner Inst., iii., 1908, p.958. 

 t Couch. Icon., xix, 1874, Pi. vi., f.22. 



