BY C. HEDLEY. 463 



Pyrene albina Kiener. 



Columhella albina Kiener, Coq. Viv. 18il, p.32, PI. xiii., f.4; 

 *c/., Heivier, Jouni. de Conch, xlvii. 1899, p.320; id., Pace, op. 

 cit 1. 1902, p.416. 



Two specimens, from the Hope Islands, are the first examples 

 of this species to be recognised from Australia. 



Another member of the genus, new to Australia, is Pyrene 

 peasei v. Martens &l Langkavel,^* which was collected at Lizard 

 Island, not far from the Hope Islands, by Dr. A. E. Finckh. 



Retusa impasta, n.sp. 

 (Plate xliv., fig.lOl.) 



Shell rather solid, subcylindrical, a crown marked off by a sharp 

 ■constriction below the summit, faintly constricted at the waist 

 and gently swollen below, anteriorly truncated, posteriorly 

 rounded, base imperforate. Colour dull white or faintly tinged 

 with yellow. Sculpture : about forty tine, close, longitudinal 

 threads traverse the whole length of the shell. These are cut by 

 about thirty sharp, narrow, concentric grooves, which strengthen 

 on crossing the crown and penetrate the apical crater. Aperture 

 A narrow slit for the anterior two-thirds, then enlarging to a 

 pyriform orifice; inner lip overlaid with a substantial callus. 

 Summit-perforation one-fifth of its diameter, deep and narrow. 

 Length 3 45; breadth 1*35 mm. 



An abundant species off the Hope Islands, in 5-10 fathoms. 

 Off tlie Palm Islands, in 15 fathoms, I found it equally common. 

 While serving as naturalist to the Geographical Society's Expedi- 

 tion to New Guinea, Mr. W. W. Proggatt gathered specimens at 

 Prince of Wales Island, Torres Strait, in 1885. 



A member of the " starved" section of Retasa] this appears to 

 be nearest to Utriculus famelicus Watson,! but has a rougher 

 .sculpture, a narrower waist, and a prominent collar. 



* Mart. & Langk., Donum Bismaixk., 1871, p. 28, Pl.i., f. 17; Pace, Journ. 

 de Conch. 1. 190J, p.419. 



t Chall. Rep, Zool. xv. 1886, Fl. xlix., f.l, p.653. 



