•358 RECORDS OF THE AUSTRALIAN MUSKL'M. 



RiSSOA PROFUNDIOR, .^p. UOV. 



(Plate Ixvii., fig. 15). 



Shell small, ovate, tunited rimate. Colour cream. Whorls 

 five. Sculpture, two apical whorls smooth, remainder with 

 elevate, distant, arcuate, radial ribs, thirteen to a whorl, which 

 gradually vanish on the base. Along the summit of each whorl 

 runs a broad spiral band linking together the tops of the ribs. A 

 few (six or seven) raised spiral threads traverse the base and 

 periphery. Aperture broadly ovate, inner lip reflected. Length 

 2-95, breadth 1-85 mm. 



A few specimens. 



The pi'esent seems shorter and broader than E. acnticosfafa, 

 Dall., ■* to which it has a strong general resemblance. 



PVRENE BABYLONICA, Sp. ncn\ 



(Plate Ixvii., fig. 16), 



Shell small, solid, glossy, conical, apex pointed, base contracted. 

 Whorls five and a half, the lower narrowly but sharply tabulate.' 

 Colour cream. Sculpture, the protoconch consisting of a whorl 

 and a half is smooth and very glossy, the next whorl is duller 

 with incipient ribbing. On the last three whorls there are strong 

 widely spaced perpendicular ribs, which on the penultimate 

 number fourteen. Below the periphery they gradually vanish, 

 above they tei'minate in a blunt point, the summits are linked 

 together by an indefinite spiral cord. The anterior extremity is 

 scored by six fine spii-al grooves. Aperture oval, feebly denticul- 

 ate within the outer lip, on the columellar wall a thick callus 

 layer. Length, 5-5, breadth 2-5 mm. 



Three imperfect specimens. 



Pyrene strix, Watson,* appears to resemble this but is larger, 

 without the denticules in the aperture and has a different apex. 



It is curious that four widely differently species of the collection 

 before me, viz., F. bahylonica, Rissoa prof unci ior, Mitra mlrandd., 

 Smith and Dril/ia rhalleiu/eri, Smitli, affect the same style of 

 ornament. 



< Dall— Bull. Mus. Comp. Zool., xviii., 1889, pi. xix., f. 10. 

 « Watson- Chall. Rep., Zool., xv., 1886, p. 237, pi. xiii., f. 2. 



