A KEVISION 01'' TIIR AUSTKAMAN rnKHIO.E HRHLKY. 



299 



Clnthurella hirsnta Bonge and Dautzenberg, .]nnru. de Couch., Ixi., 1913 



(1914), p. 198. 



Ilith. Queensland -.—5 to 8 fathoms, Marray Island (self); Mast 

 Head Island (self). 



Hetkrocithaka kigorata Iledley. 



(Plate 1., figs. 109, 110.) 



Mangilia rigorata Hedley, Proc. Linn. Soc. N.S.W., xxxiv., 1909, p. 459, 



pi. xliv., figs. 98, 99. 



Huh. Queensland :_5 to 10 fathoms, Hope Island (type, self) ; 20 

 fathoms, Darnley Island (" Chevert "). 



HeTEKOCITUARA SERILIOI.A sji. IIOV. 



(Plate 1., fig. 111.) 



Shell subcylindrical, turreted, apex pointed. Colour undetermined. 

 Whorls eiffht. Sculpture :— Ribs narrow, elevated, round-backed, alter- 

 nating from whorl to whorl, in-bent at the summit, the shaft perpendicular 

 and the base out-curved, thirteen on the penultimate and eleven on the last 

 whorl, the rib before the varix evanescent ; spirals ai^e prominent cords 

 crossing both ribs and interspaces, on the upper whorls three or four, on 

 the last twelve; the uppermost spiral accentuates the shoulder angle; 

 two or three on the base are thicker than the rest ; the interspaces have 

 microscopic grains set in canvas pattern. Aperture:— The mouth is long, 

 narrow, and unarmed ; varix larger than the ribs, rising at the insertion, 

 the edo-e of its outer limb crenulated by spirals ; sinus rather broad ; 

 columella perpendicular ; canal short and broad. Length 9 mm., breadth 

 3 mm. 



This is related to H. rigorata, but is easily distinguished by its far 

 larger size. P. gracllenta is comparable in size, but differs by its blunt 

 apex, slighter ribs, and more fusiform contour. 



Hah. Queensland-.— 12 fathoms, Torres Straits (Brazier). 



HeTEROCITHARA TRANSENNA sp. HOV. 



(Plate I., fig. 112.) 



Shell small, very solid, ovate-acuminate, turreted. Colour faded to a 

 uniform gray. Whorls six. The protoconch is composed of two small 

 smooth elevated whorls. Sculpture :— The radials are prominent perpen- 

 dicular discontinuous ribs, which are dislocated at but continue on the 

 snout; they are nodose at the passage of the spirals, and wider spaced on 

 the last whorl, being set at the rate of ten on the penultimate and eight 

 on the last whorl ; the spirals are strong evenly-spaced threads, nine on 

 the last whorl and three on the one before. Aperture -.—Varix broad and 

 prominent, almost closing up the mouth ; sinus open and rather shallow ; 

 canal a mere notch. Length 5 mm., breadth 2 mm. 



