296 RECORDS OF THE AUSTRALIAN MUSEL'M. 



Hemilibn'abijia HERSILIA ^p. nov. 



(Plate xlix., fig. 104.) 



Shell small, ovate-pointed, contracted at the sutures and at the base. 

 Colour dull-white, au opaque white band at the back of the last whorl. 

 Whorls seven, of which three are apical. Sculpture: — The radials are 

 discontinuous, vertical, moderately prominent ribs, which diminish at the 

 sutures and vanish on the base, and ai'e set at ten to a whorl ; the spirals 

 are prominent cords which over-ride the ribs, four on the penultimate and 

 twelve on the last vs^horl ; of these the anterior five run across the snout, 

 and are beaded. Aperture : — Mouth sinuate ; varix composed of a double 

 rib, the free limb traversed by eight spirals and the edge armed by four 

 tubei-cles, becoming larger as they ascend, the lowest double ; columella 

 with two deep-seated plications; sinus and canal broad and shallow. 

 Length 3"5 mm., breadth \1 mm. 



Huh. Queensland : — 5 to 8 fathoms, Murray Island (type, self) ; 

 Palm Island (self). 



Hemilienardia HOMOCHROA .<^. IIUV. 



(Plate xlix., fig. 105.) 



Shell small, solid, elongate-ovate. Colour entire deep rose pink, 

 except an opaque white zone which is at first one spiral broad and at last 

 three rows broad. Whorls eight, first three and a lialf apical, rapidly 

 increasing. Sculpture: — The radials are twelve prominent round-backed 

 ribs, ceasing on the base, discontinuous from whorl to whorl, and broader 

 than their intei^stices ; the spirals amount to sixteen on the last whorl, 

 and to four on the penultimate ; they ai-e stout close set cords which 

 traverse both ribs and interstices and continue on the base; there they 

 carry large beads in continuation of the axes of the ribs ; the whole 

 sui'face is also mici'oscopically shagreened. Aperture: — Tlie mouth is 

 vertical, contiacted by the limb of the varix, the free edge of which is 

 armed with five prominent tubeicles ; columella excavate and twisted; 

 sinus deep and narrow. Length 5 mm., breadth 2*5 mm. 



This is an Australian representative of //. maUeti Recluz from the 

 tropical Pacific. It is easily and definitely distingui.shed by having the 

 piotoconch coloured like tlie rest of the shell instead of being a brilliant 

 white like that of malleti. 



An example of this was found by Mr. J, Brazier in a rock pool, 

 between tide marks, at Little Coogee, neai' Svdney, 19th July, 1895. 

 Though immature it is quite shaip and fresh, and had evidently lived 

 where it was found. Still 1 should consider that this s[)ecies is not an 

 ordinary resident of so southern a latitude, but that this individual was a 

 waif swept down by the Notonectian current, perhaps in a larval state. 



Hah. Queensland : — Two Isles, off Cape Flattery (type, self); Green 

 Island (self). N.S.Wales: — Little Coogee (Brazier). 



