46 " ENDEAVOUR " SCIENTIFIC RESULTS. 



XESTOLEBERIS NANA, G. S. Brady. 



Xestoleberis nana, G. S. Brady, Chall. Rep., Zool., i., pt. iii., 

 1880, p. 126, pi. xxxi., figs. 5a-c. 



Our specimens from Cape Wiles are rather higher than 

 those figured by Dr. Brady, but there is little doubt that they 

 are referable to the above species. 



X. nana was recorded from 18 fathoms off Tongatabu. 



East of Tasmania, 1122 fathoms. One small valve. 



Forty miles south of Cape Wiles, 100 fathoms. Two valves. 



XESTOLEBERIS VARIEGATA, G. S. Brady. 



Xestoleberis variegata, G. S. Brady, Chall. Rep., Zool., i., 

 pt. iii., 1880, p. 129, pi. xxxi., figs. Sa-g. 



The previously recorded localities for this species are off 

 St. Vincent, Cape Verde, 1070 fathoms ; off Tongatabu, 18 

 fathoms ; Noumea, 2-6 fathoms ; and in the Fiji and Samoan 

 Islands, in shallow water. In dredgings taken at 1489 

 fathoms at Funafuti the writer found a single valve of this 

 species. 



Forty miles south of Cape Wiles, 100 fathoms. Two valves. 



Genus CYTHERURA, G. 0. Sars. 

 CYTHERURA CRYPTIFERA, G. /S'. Brady. 



Cytherura cryptifera, G. S. Brady, Chall. Rep., Zool., i. r 

 pt. iii., 1880, p. 134, pi. xxxii., figs. 4a-c. 



The " Challenger ' specimens were from a dredging in 

 Bass Strait, 38-40 fathoms. Only one carapace of this species 

 has been previously found. 



Station 36, east of Tasmania, 777 fathoms. Two separate 

 valves, of a normal and a narrow carapace. 



CYTHERURA TENUICOSTA, Chapman. 



Cytherura tenuicosta. Chapman, Journ. Linn. Soc. Lond., 

 Zool., xxx., 1910, p. 436, pi. Ivii., figs. 25a-b. 



This is an interesting form of the genus, in which the 

 ornament consists of fine parallel costulse. It was originally 

 described from deep dredgings around Funafuti, at 1215 and 

 1417 fathoms. This second occurrence of the species in 

 deep water seems to indicate its persistent bathymetrical 

 habitat, even in areas of different latitudes. 



Station 36, east of Tasmania, 777 fathoms. Two valves. 



