156 



RKCORPS OK THE A rSTK AI.IAN MUSEIM. 



I)i I i.'Vi'A i;i;A/.ii:in. >/-. ii"r. 



(Fiuui-e 1 ). 



Deutalinin /"tp, liiazier, Pruc. Ijimi. Sou. ^'.S.^Vak•^, ii., 1. 1S7S, p. h9. 



Cuduliiii luect!!, Brazier, Hedlev, Pruc. Liiiu. >Si)C. N.. S.Wales, .\xv., o, 

 1900, p. 499, pi. .\.\vi., Ho-s. S, 9, 10. /-/., Hedlev, Kec. .Vust. Mus., 

 iv., 3, 1901, p. 129. 



Cii'lnliix ! ! hu'n'.<. Brazier. I'ilsbrv ami Sliai-p. Man. (Juucliulo^'y, .wii., 

 1897-8, p. 195. 



Shell cnrved and tapering: 1 imn. in dianiL-tei- ai llie Idnadi'sl part 

 of the posterior end, the walls nl' which, lor 2 mm. I'iimh tlic iMi>itMior 

 opening, incline sharply to form I lie irusium of a cone. Uiilici' ai the 

 anterior end minute and entire. Sui'face smooth, 

 poi'cellaneous, or eucrusteil Avith adlierent [latehes 

 of nullipoie. Colour white to \'ellowish hiown. ^<; 



Te.vture earth_y. 



Average length of •' Chevert " specimens, 

 1-4 mm. 



Holotype in the Macleay Museum, Univer- 

 sity of Sydney. 



A second form which differs fi'om the othei' 

 described forms of Ditnjjm ^\^Ai^ been added to 

 the collections of the Australian MustMim. it 

 is from 20 fathoms between Cairns and 

 Endeavour Reefs, Queensland, collected l)y ^Ir. 

 A. li. McCullocli of the Avisti'alian Museum, 

 September 9, l9lS. While these are I lie only 

 specimens in the collections. Mi'. Hedley informs me that, tliis 

 constantly (iccui'red in dredgings that he lias examined from 

 of North Queensland. T have lo thank Mi'. 

 F. Chapman of the National .Museum, 

 Melbourne, for his examination and verdict 

 that this foiin is a ti-ue l>il ri/jin. 



DirKVI'A AISI IIAI.IS. >y.. //nr. 



(Figure 2). 



SIihII very slender, cnrved and ta[)t'r- 

 ini;-. Uriiicc at llic anli'iior end minute 

 and enlire. i'he wails of the posterioi' 

 f)pening are thickened and slightly con- 

 tracting in perfect specimens. Surface 

 smooth oi- poi'cellaneous. Texture earthy. 

 Colour diily while lo ir]vy. ,\vei'ai;c 

 length, 8 mm. 



Ilolotvpe in tlie Australian .Miiseuni 

 (F. 17609i. P,^ 



FlK. 1. 



lorm lia.=. 

 the c.-ast 



