60 Frederick Chapman .- 



Cythkrklla lata, G. 8. Brady. (Plate IX., Figs. ^\a, b). 



C;/therdJa lata, G. S. Brady, 1880, Kep. Ghall. Zoul.. vol. i., 

 pt. iii., p. 173, pi. xliv., figs, via-e. 



Ohsercafivus. — This species is found in the living condition in 

 as widely separated areas as the West Indies and the Japanese 

 Sea. At Torres Strait it was found in 155 fathoms. 



The fossil example here depicted differs in no essential details 

 from the valves of the living form. 



Occurrence. — Bore 5. 163-175 feet (Kalimnan or Janjukian). 



CvTHKRELLA POLiTA, G. S. Brady. (Plate IX., Figs. \h(i, h). 



Cytherella poUfa. G. S. Brady, 1868, Les Fonds de la Mer. 

 p. 161, pi. xix., figs. 5-7. Idem. 188U, Kep. Ghall. 

 Zool.. vol. i., pt. iii., p. 172. pi. xliii.. figs., oa-c; 

 pi. xliv., figs. la-g. 



Ohserratioiis. — This species has been recorded in the living con- 

 dition from the West Indies; Wellington Harbour. New Zealand, 

 in the tow-net ; and from the mouth of Rio de la Plata. 13 fathoms. 



Cytherella polifa is one of the best distributed of the cytherellids 

 in the Mallee washings. The fossil examples agree in practically 

 all points with the recent, with the exception that the former tend 

 to exhibit a broader antei'ior border. 



Occurrence. — Bore 5, 153-175 feet (Kalimnan or Janjukian). 

 Bore 8, 210-219 feet (Kalimnan or Janjukian). Bore 9. 315-325 

 feet (Kalimnan or Janjukian). Bore 10, 160-186 tV>et ; 195-225 

 feet (Kalimnan). Bore 11, 457-458 feet; 546-548 feet (Janjukian). 



Cythkrella pulchra, G. S. Brady. (Plate IX., Figs. 46«, h). 



Cytherella pulchra, G. S. Brady, 1866, Trans. Zool. Soc, 



Lond., vol. v., p. 361, pi. Ivii., figs. \a-(l. Idem, 1880, 



Rep. Chall. Zool., vol. i., pt. iii., ]>. 174. pi. xliv.. figs. 



3r/, />. 



Ohser rat ion s: .—'T\ie living examples were found at Port Jackson 



at 2-10 fathoms; and off Ascension Island, 42 fatlioins. As in many 



other instances in the Mallee fauna, this si)ecies has survived in 



Australian waters fi'om Miocene times. The fossil examples are 



identical in all points \\ith the type of the living form. '". pulchra 



