81 



3. Baenea austealasi^:, Sowerbv, in Thesaurus Conchy- 

 liorum, t. 107, f. 73. 



Burrowing in soft rock just below low-tide mark, from the 

 Head of the Great Australian Bight to Gulfs Spencer and St. 

 Vincent ; also in Tasmania. 



Similar to the last, but rounded anteriorly. 



4. Jouanj^etia Cttmingi, Sowerby. 



MacDonnell Bay (W. Tomsett!); also New South Wales 

 (J. Brazier) and Port Darwin (W. T. Bednall !) 



Anteriorly globose and covered by a callous plate, acuminate 

 posteriorly. 



Family. Gastboch^nidjs. 



5. Aspeeg-illum (Humpheeyia) Steangei, A. Adams, in 

 Proceedings Zoological Society, 1852, p. 91, 1. 15, f . 15 ; Eeeve, 

 Mon., t. 2, f. 4. 



Holdfast Bay (W. T. Bednall!); also Tasmania and New 

 South "Wales. 



Tube stout, squarely rounded, and obtusely keeled at the 

 angles. Length, about two and a-half inches. 



6. Aspeegillum (Humpheeyia) multa^gtilaee, Tate, antea, 

 p. 64, t. 4, f. 4. 



Holdfast and Aldinga Bays in Gulf St. Vincent, and "Wal- 

 laroo Bay in Gulf Spencer. 



Tube slender, polygonally rounded, angles not keeled. Total 

 length, about one inch. 



7. Gasteoch/Ena lamellosa, Deshayes, in Proc. Zool. Soc, 

 1854, p. 328 ; Smith, in Zoology of the Challenger, pt. 35, t. 8, 

 f . 2, p. 28, 1885. 



Burrowing in sponge, Backstairs Passage, in 32 fathoms - r 

 also Philippine Islands, Cape York (Challenger Exp.), and 

 Port Darwin (Bednall !) 



Dorsal margin sloping, widening posteriorly; surface of 

 valves raised into close-set lamella?. Length, about one and 

 a-quarter inches. 



8. Gasteoch^na Tasmanica, Tenison "Woods, in Proc. Roy. 

 Soc. Tasmania for 1876, p, 159. PI. v., figs. 10a— 105. 



Burrowing in limestone, forming the bed of Port Adelaide 

 Creek ; in the test of Chanise and encrusted growth on Pinna?, 

 Holdfast and Aldinga Bays ; also Tasmania ! 



Dorsal margin nearly straight, ventral gape occupying whole 

 length of margin ; surface concentrically striated. Length, 

 under half -inch. 



