I 



39 



Sjoicue nehulosa, marginihus postice late de7itatis, antice crenulatis. 

 Long. 29, lat. 32, alt. 16. Bass' Straits. W. F. Pettercl. 

 King's Island, Flinders' Island. E. Gunn. 



Sliell ovate thick, pale fulvous, radiately regularly ribbed^ 

 ribs rounded, smooth, shining, numerous (about 30), broad 

 in front, smaller behind and indistinct ; concentrically lamel- 

 lar, lamellse thin, distant, slightly raised, close towards the 

 margin, thick and irregular ; umbones purple ; ligament 

 conspicuous, elongate ; fossa broad, rather deep, rugose ; 

 shell conspicuously clouded white and purple within ; margins 

 broadly toothed posteriorly and crenulate behind. 



This shell somewhat resembles some New Zealand forms, 

 but it is distinct from any of them. The broad ribs and 

 concentric lamellae are very different from F. australis and 

 F. striatissima, of Bass' Straits. The ribs are broad and the 

 lamellae very thin and distant, and the shell is much larger. 

 It appears to be rare. 



BiTTiUM TURBONiLOiDES. u. s. B. t. miniitci, turrita, 

 acicularis, clathrata, sorclide alhicla, stibnitente ; anf. 9 — 12, 

 niicleo inchiso, eleganter tricarmatis et crehre longitud. costatis ; 

 costis ult. anf. 20—24, conspicuis, carinis stiperantihus, supra 

 eas transeuntihus et ihi nodosis ; sutura sat impressa ; nucleo 3 

 anfract. Icevihus rotundatis ; apertura semilunaris, basi Icevis, 

 conspicue concava. Long. 5, lat 1 mil, 



Shell minute, turretted, acicula.r, latticed, dull whitish, 

 somewhat shining, whorls 9 to 12 including the nucleus, 

 elegantly tricarinate, and thickly ribbed lengthwise ; ribs in 

 the last whorl 20 to 24, conspicuous, wider than the carinaa, 

 passing over them and nodose at the junction, suture well 

 impressed ; nucleus of three rounded whorls ; aperture semi- 

 lunar, base smooth and conspicuously concave. 



But for the Bittium aperture and columella this beautiful 

 little species is very like a Turhonilla. It is very elegantly 

 sculptured, the ornament action being exceedingly close and 

 fine, even proportionately for so small a shell. It was found 

 at Circular Head by the Eev. H. D. Atkinson. 



Mangelia alternata. n. s. M. t. parva, fusiformi, sub- 

 nite7ite, alba, et (in ult. anfr. tant.) maculis fulvis pallide lineata ; 

 anfr. 6, declivihus, superne angulatis, regulariter costatis, spira- 

 liter crebre liratis, liris supra castas transeuntibus, hand nodosis, 

 parvis et magnis alteriiantibvs ; sutura bene irapressa, apice 

 obtuso, nucleo lavi, 1\ anfr., hand infiato, apertura spira paulo 

 superanti, ancjiiste elliptica, labro tenui, cohnnella inconspicua 

 vix encausta, sinu leviter curvato, per flexioneni costidorum supra 

 anguhim a7ifractmim tantmn insignito. Long. 11, lat. 4 ; long, 

 apert 6 mil. 



Shell small, fusiform, somewhat shining, white, and in the 



