326 STUDIES ON AUSTRALIAN. MOLLUSCA, xi., 



Reeve's figure of C. fulyida is so poor that, without the aid of the 

 actual type, I did not recognise it. No intimation is given that the 

 figure of C. fulgida is enlarged, but on the same plate, and also 

 without notice of enlargement, are rorida Reeve, lunata Say, and 

 diminuta Adams, each in nature about 5 mm. long, and magnified 

 three or four diameters. This agrees with the presumption that C. 

 fulgida is also enlarged four diameters. The drawing of C. fulgida 

 is too slender, and the number of whorls are incorrectly indicated. 

 But the same errors are repeated in the case of rorida immediately 

 above C. fulgida. 



Retizafra, subgen.nov. 



For some small "Colunibella" which do not quite conform to 

 Zafra, I suggest a division Retizafra. 



In size and form they correspond, but differ by clathrate sculp- 

 ture. Also the Betizafra usually inhabit deeper water. Type, 

 Pyrene yemmulifera Hedley, 1907. Other members are Pyrene 

 calva Verco, 1910; Pyrene intricata Hedley, 1912; Columbella 

 plexa Hedley, 1902; and the Lifuan Columbella brevissima Her- 

 vier, 1899. 



Murex serotinus A. Adams. 

 (Plate xix., figs. 78, 79.) 



Murex serotinus A. Adams, Proc. Zool. Soc, 1851,(1853), p.268; 

 Id., Angas, Proc. Zool. Soc, 1865, p. 154; Id., Sowerby, Thes. 

 Conch., iv., 1879, Murex index, p. 51; Id., Try on, Man. Conch., ii., 

 1880, p. 135; Id., Verco, Trans. Roy. Soc. S.A., xix., 1895, p. 96. 



Under the name of Murex serotinus A. Ad., three species are ex- 

 hibited in the British Museum. The first (my fig. 78), a lot of four, 

 is marked type "Murex serotinus, A. Ad., P.Z.S.,1851, p. 268, Hab. 

 ("?), M.C." The second (my fig. 79), is marked ''(?) serotinus A. 

 Ad., Aldinga. From the Colin, of H. Adams." 



As Dr. Verco remarked, "No other collectors have taken it in 

 Australia," the inference being that the species is exotic. It would, 

 therefore, be a convenient riddance to accept Sowerby's reference 

 of serotinus to the Mediterranean Muricopsis blainvillei Payrau- 



