388 



inequilateral, and in being distinctly concentrically ridged. As 

 in that species, however, the siphonal sinus is quite free from 

 the pallial line ; it is large, and ascends into the umbonal cavity. 



Dimensions. — Height 6"5 mm.; length 11 mm. 



Form, and Loe. — Eocene : Muddy Creek, Victoria. 



L. 9866. Several specimens of different stages of growth. 



Furchased. 



Family SCROBICULAKIID^. 



Genus SEMELE, Schumacher. 



[EssaiNouv. Syst. Habit. Testaces, 1817, pp. 165, 166.] 



Shell somewhat inflated, suborbicular, subequilateral ; umbones 

 small, turned anteriorly ; slightly plicated posteriorly ; two very 

 small cardinal teeth on each valve, and two lateral, most distinct 

 on the right valve ; cartilage pit long, oblique, pallial sinus very 

 deep. 



Tyj}e. — Tellina reticulata, Spengler. 



Semele vesiculosa, Tate. 



1887. Semele vesiculosa, Tate, Trans. Eoy. Soc. South Aust. vol. ix. p. 169, 



pi. xvi. lig. 12. 

 189.3. Semele vesiculosa, Tate and Dennant, id. vol. svii. pt. 1, p. 225. 



Shell transversely ovate, inequilateral ; the anterior side is the 

 longer and is rounded, the posterior being obtuse-angled; right 

 valve not so convex as the left, and not so conspicuously angulate 

 at the umbonal slope ; surface shining, few lines of growth ; lunule 

 broadly lanceolate ; pallial sinus extending two-thirds across the 

 interior, rounded at the apex. 



Fimenslons. — Height 7 mm. ; length 9 mm. 



Form, and Loc. — Eocene : Muddy Creek, Victoria. 



L. 9862. Specimens of both valves. Purchased. 



Semele krauseana, Tate. 



1887. Semele krmiseana, Tate, Trans. Eoy. Soc. South Aust. vol. ix. p. 169, 



pi. xvi. figs. 18«-J. 

 1893. Semele krauseana, Tate and Dennant, id. vol. xvii. pt. 1, p. 225. 



