190 STUDIES ON AUSTRALIAN MOLLUSCA, VIII., 



long-drawn spiral in a plane oblique to the first. At one-fifth of 

 the length a stout projecting ring-varix occurs. Sculpture : 

 delicate growth-rings, which latterly become broader and stronger. 

 Aperture simple, circular, oblique to the plane of growth, nearly 

 at right angles to the plane of apex. Length (straight line 

 between most distant points) 3-35 mm; diameter of aperture 

 0-45 mm; diameter of apex 0"l mm. 



^fl'^.— Bottle and Glass Rocks and Long Bay, near Sydney; 

 three specimens (Miss L. Parkes). 



Type. — To be presented to the Australian Museum. 



This species adds to the Australian fauna a genus which was 

 founded by Carpenter* for the reception of a Tertiary fossil. The 

 first recent species was discovered near Honolulu by the Chal- 

 lenger Expedition. From it, this, the second, is easily 

 distinguished by more slender form and conspicuous ring-varix. 

 The latter character strikingly recalls Cfiloceras. 



Capulus devotus, n.sp. 

 (Plate viii., figs. 15-16.) 



Shell small, rather solid, elevated, irregular, asymmetrical; 

 apparently without epidermis. Colour white. Sculpture : deli- 

 cate regular concentric hair-lines. Protoconch sharply defined, 

 of a whorl and a half, smooth. Apex projecting far past the 

 base. Adult shell describing a quarter of a whorl, rapidly 

 increasing, wound in a different plane to the embryo. Aperture 

 subcircular, simple, slightly expanded. Specimen drawn, from 

 back to front 4-5mm. ; base to vertex 3*5 mm.; side to side 3-Omm. 

 Another specimen, 5*5 x 4-0 x 5-1 mm. 



Hah. — Sixteen miles east of Wollongong in 100 fathoms; 

 several specimens dredged by Mr. G. H. Halligan and self. 



Type. — To be presented to the Australian Museum. 



The lack of colour and rotund form easily distinguish this 

 from C. violaceus, An gas, the only other member of the genus 

 native to our coast. 



* Proc. Zool. Soc. 1858, p. 440. 



