On some New Species of Victorian Mollusca. 183 



Locality. — Near Shoreham, Western Port (Gatliff). 



Observatio7is. — In general form this species is similar to C. 

 purpuriformis, Valenciennes ; the mouth is not as expanded as in 

 C. IcBvigata, Sowerby, and it is not so solid as that shell. 



We have named it after Sir Frederick McCoy, K.C.M.G., 

 M.A., D.Sc, F.R.S., etc., who by kindly allowing us free access 

 to the standard conchological works in the National Museum 

 library, has so greatly assisted us in our endeavours to determine 

 the identity and classification of our indigenous molluscan fauna. 



TrichotPopis gabrieli, n. sp. (PL XX., Fig. 7.) 



Shell fragile, turbinately conical. Apex one and a half smooth 

 embryonic whorls, succeeded by four others, the body whorl 

 being nmch enlarged, and having two well defined spiral keels, 

 starting near the centre of the outer lip, and continuing to the 

 embryonic whorl, forming angles to the upper and lower greatest 

 diameters of the body whorl ; the upper keel on the body whorl 

 being nearly twice as broad as the lower one, area between the 

 two very slightly convex ; regularly but indistinctly spirally 

 striated ; striae continuing over the whole whorl, including the 

 keels. Spiral sculpture of body whorl crossed by close faint 

 lines of growth. Earlier spire whorls clathrate. Inner lip 

 almost straight, slightly concave in the middle, somewhat everted. 

 Outer lip semicircular, acute, simple. Widely and deeply 

 umbilicated, almost to the apex ; keeled throughout, keel 

 continuing on the body whorl to the angulation of the anterior 

 canal. 



Colour, uniform chestnut within and without. 



The epidermis is not ciliated. 



Dimensions. — Length, 12 mm. ; breadth, 10 mm. ; length of 

 aperture, 6 mm. ; breadth, 5 mm. 



Locality. — Swan Bay Channel, oflF Phillip Island, Western 

 Port ; Dredged in about 4 fathoms, two specimens (J. Gabriel). 



Observations. — In general appearance it much resembles T. 

 quadricaritiata, A. Adams, but the spire is shorter and body 

 whorl moi'e ventricose. 



It is named after Mr. J. Gabriel, who discovered it. 



