159 



D. sliell suborbicular subinfl.itcd, subattcnuatc towards the 

 umbones, suowy white, somewliat shining, and under the lens 

 elegantly irridoscent, umbones lightly spotted with pink, 

 slenderly striate, and decussate very finely and elegantly with 

 fine strife, ligamental area narrowly lanceolate, lunule small, 

 broadly cordate, impressed and carinate in the middle ; paiiial 

 sinus deep and obtusely triangular, 



East Coast, uncommon. A very beautifu' snowy white, and 

 neatly rounded shell. The transverse striae are very regular 

 and corbis like. 



Calusta victori.^;. n.s. C. t. trl/jono-suhcordata, crassa, tumida, antice 

 rotundata, posticc obtuse augulata, incequdaterali, confertissime concentric6 

 itriaUi (gtriis antlcc lamellDsin, l<inuUis3, rel. 4, pa^-vis, crassis) ; suhnitida, 

 jxillidc cariicn, liiieis Intis incvqunlibus, rufo-castaneis, lonr/itudinaliter pmtci- 

 radiata ; lumda dongata, tenuistriata, linea impixssa circumscripta ; latere 

 postico obtusi angulato, planato, rwjos6 striata ; valris intus, nitentibus, rufo- 

 lutca ncbtdosis, manjine denticulato. Long. 55. Lat. 60. Alt. 35. 



C. shell triangularly subcordate, thick, tumid, rounded in 

 front and posteriorly obtusely angu'ate, inequilateral, very 

 thickly concentrically striate (striae anteriorly lamellose with 

 3 or 4 thick small lamellae) somewhat shining, pa'e flesh color, 

 rayed lengthwise, with few broad uneqiial reddish chestnut 

 lines ; lunule elongated, slenderly striate, circumscribed with 

 an impressed line ; posterior line obtusely angulate, flattened, 

 and rugosely striate ; valves shining very much within, and 

 c'ouded reddish yellow, margin denticulate. 



A somewhat common shell on all the South Australian and 

 Victorian costs, and is said to occur in S. E. Austra ia, but the 

 identification is doubtfu', as it has been confounded with C. 

 rufila, Sow., with none of the description or figures of which it 

 corresponds. The specimens from which the description is taken 

 came from Cloudy Bay on the South of Bruny Island. It also 

 is found in Frederick Henry Bay. I have never found it ex- 

 cept on sandy exposed coasts where there is a heavy surf. 



Vexerupis reticulata, n.s. V. t. transversa, subqnadrata, tenui, dc- 

 prcssa, valde incequdaterali, antice rotundata, brevi, postice depressiuscida, 

 latiore, subtruncata ; costis transversis obsoUtis, planatis, divaricatis, undu- 

 losis creberrimi cincta (sublente) ; undiqvA tenuissime longitudinaliter striata ; 

 valiis intus albis, cardine parvo inaqioaliter tridentato, dentibus medianis et 

 posticis bifidis ; sinu pallii antjusto, rotundata, obtuso. Albida, postice lineis 

 an'jnlatis atro reticulata, aliquando versus umbones radiatim rosea tincta. 

 Lung. 17. Lat. 17. Alt. 12. 



V. shell transverse, subquadrate, thin, depressed, very in- 

 equilateral anteriorly rounded, short, somewhat depressed, 

 posteriorly and border very thickly girdled with transverse 

 obsolete flattened, undulating ribs ,* under the lens longitudi- 

 nally striate in every part ; valves white within, hinge small, 

 unequally triJentate, with the median and posterior teeth 



