J5Y K. J. r40DDARD AND II. I. JKNSBN 305 



proximal end of the next (see fig.7«). The shell is porcellanous 

 and imperforate. It is surrounded l)y a keel having a peculiar 

 terminal appendage. 



The genus is most closely allied to the genera OphfJudinidium 

 and Hauerina, from which it is distinguished by the characteristic 

 generic features that the chambers have no trace of spiral com- 

 mencement but are arranged in an alternating manner, and 

 each chamber possesses a well marked neck. Diam. 038 mm. 



(Jristellaria variabilis Reuss, var. (Plate vi., fig.8). 

 The variety figured is sufficiently near the type to be assigned 

 to that species. The figure shows the irregular arrangement of 

 the chambers and the possession of a keel. 



Chistkllaria sp., intermediate between C. lata and C. crepidula 

 (Fichtel & Moll). (Plate vi., fig.9). 

 The specimen is a very flattened minute form whicli has the 

 arrangement of chambers of C. crepidnla (Challenger Report, 

 pl.67,fig.l9). 



Cristellaria haswelli Goddard, var. (Plate vi., fig.6). 



This form so closely approaches C. HasweHi in general contour, 

 size and arrangement of the chambers that there seems no 

 necessity to give it a separate varietal name. As varietal dis- 

 tinctions between this form and the type, we might mention that 

 the septal line shows Vjut the faintest trace of a recurving; also 

 the front peripheral margin of the shell has a wavy contour 

 unlike the even outline of the t3^pe. The shell is also broader 

 than in the type-form (Records of the Australian Museum, 

 Vol. vi., Partiv.). 



Lagena globosa Montagu, var. grandipoha, var.no\ . 

 (Plate vi., fig. 10). 

 This form has the entosolenian neck and ovoid shape of L. 

 ylohosa, and differs only from the type in possessing a number 

 (about 8) of irregularly distributed large pores. 



The forms represented in this list overlap to a great extent 

 those diedged by H.M.C.8. "Miner" 22 miles east of Sydney 



