1871.] MR- G. F. ANGAS ON NEW AUSTRALIAN SHELLS. 1.3 



pressure I saw what seemed to me something like two or three lateral 

 barblets appearing on one side of a barbie. 



When the ova arrived many of tbem were covered by a forest of 

 minute fungi. I submitted these to Mr. Berkeley, who informs me 

 that " the matter on the fish-ova is a Saprolegnia ; there being only 

 one kind of fruit, and that scarcely perfect, I cannot tell the species. 

 The curious point is, that it is accompanied by a mucor, probably a 

 condition of the Saprolegnia (or the reverse), with quadrate spores, 

 which 1 never saw before." 



2. Descriptions of thirty-four new Species of Shells from 

 Australia. By George French Angas, Corr. Mem. 

 Z.S.L., F.L.S., F.R.G.S., &c. 



[Eeceived December 5. 1870.] 

 (Plate I.) 



1. Triton (Ctjmia) speciosa, n.sp. (Plate I. fig. 1.) 



Shell ovately fusiform, moderately solid, with from twenty to 

 twenty-two conspicuous, erect, rounded varices ; whitish, sometimes 

 with a narrow zone of pale chestnut on the lower portion of the last 

 whorl ; whorls 5|-, encircled throughout with concentric ridges 

 larger and smaller alternately, and decussated between the varices 

 with sharp raised striae, forming bead-like nodules at the intersection 

 of the ridges ; spire pointed ; aperture ovate, white within ; outer 

 lip arcuate, thickened by a varix ; columellar margin covered with a 

 shining white callus ; canal short, recurved. 



Length 8 lines, breadth 4 lines. 



Hab. Green Point, Watson's Bay, Port Jackson, at very low 

 spring-tides (Brazier). 



This elegantly sculptured shell appears to belong to a somewhat 

 aberrant group of Triton, to which the subgeneric title of Cumia has 

 been given, and of which the Triton convolutus, Brod., may be re- 

 garded as the type. 



2. Olivella ExauisiTA, n.sp. (Plate I. fig. 2.) 



Shell ovately turreted, smooth, shining, pale brownish yellow, or- 

 namented with three rows of irregular, rather distant, dark chestnut 

 spots, one at the suture, the others near the centre and lower portion 

 of the last whorl, and joined by fine pale chestnut undulating lines 

 which are carried down to the base of the shell ; whorls 5 ; sutures 

 channelled ; apex obtuse ; outer lip a little thickened ; columella 

 slightly plicate anteriorly. 



Length 4 lines, breadth 1| line. 



Hab. Coodgee Bay, New S. Wales, in shell-sand {Brazier). 



A very handsome little shell, the waved lines on the whorls re- 

 minding one of Voluta undulata. 



