332 



Area (Barbatia) celleporacea, Tate (sp.). 



1886. Barhafia celleporacea, Tate, Trans. Roy. Soc. South Aust. vol. viii. 



p. 141, pi. s. fig. 10. 

 1893. Barbatia celleporacea, Tate and Dennant, id. vol. xvii. pt. 1, p. 224. 

 1896. Barbatia celleporacea, Pritchard, Proc. Eoy. Soc. Vict. vol. viii. n.s. 



p. 147. 



Shell elongate-oblong, inequilateral ; anterior side short ; 

 posterior side elongated, obtusely angular, posterior slope cari- 

 nated ; ventral margin slightly sinuated ; surface ornamented with 

 concentric folds raised into frills which are most prominent 

 posteriorly. The author remarks that the frills "in aged speci- 

 mens pass into uncinate scales or hollow tubercles, the fimbriations 

 within the interstitial spaces not infrequently perforated, the 

 entire ornamentation simulating a polyzoal growth, as in Celleporay 



Dimensions. — Height 12 mm. ; length 24 mm. 



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



L. 4797. Three specimens of the neanic stage of growth. 



Presented hy John Dennant, Esq. 

 L. 6595. Example of the adult, both valves. Purchased. 



L. 9907. Series illustrating stages of growth. Purchased. 



Area (Barbatia) consutilis, Tate (sp.). 



1886. Barbatia consutilis, Tate, Trans. Roy. Soc. South Aust. vol. viii. 



p. 142, pi. ii. fig. 15. 

 1893. Barbatia consutilis, Tate and Dennant, id. vol. xvu. pt. 1, p. 224. 



Shell oblong, hinge area narrower than in A. celleporacea, whilst 

 the posterior side is not so much prolonged ; anterior side short, 

 rounded, not angulate ; external ornament consisting of crowded 

 longitudinal lineations crossed by closely-set concentric lineations 

 of about the same strength, slightly granulated at the points 

 of intersection, the anterior and posterior extremities of the shell 

 having this structure exaggerated. 



Dimensions. — Height 15-5 mm. ; length 31 mm. 



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



L. 4795. Examples of the adult, both valves. 



Presented ly John Dennant, Esq. 



L. 6594. Two specimens. Purchased. 



L. 9908. Series illustrating stages of growth. Purchased. 



