302 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 57. 



Cat. No. 



204675 

 299971 

 291070 

 238829 

 298972 

 238814 

 298947 

 291236 

 238895 

 246335 



240100 

 238214 

 297057 

 239310 

 173591 



Locality. 



Off Ilondo Island, Japan, 65 fathoms 



Off Silungan, Philippine Islands, 305 fathoms. 

 Off Silungan, Philippine Islands, 305 fathoms. 

 Off Mindanao, Philippine Islands, 182 fathoms. 

 Off Mindanao, Philippine Islands, 219 fathoms. 

 Off Mindanao, Philippine Islands, 169 fathoms. 

 Off Mindanao, Philippine Islands, 219 fathoms. 

 Off Tawitawi, Philippine Islands, 240 fathoms. 



Off Cebu, Philippine Islands. 310 fathoms 



Ofi North Burias, Philippine Islands, 105 

 fathoms. 



Off (?) Philippine Islands 



China Sea, 340 fathoms 



China Sea, 230 fathom.s 



Molucca Pass, 265 fathoms 



Australia (?) 



This species much resembles T. unguicula but is generall}^ a little 

 smaller and flatter, with the outline more triangular. The spiculation 

 is sufficiently different in Blochmann's opinion to separate the species. 

 The tropical distribution also reenforces the argument. 



TEREBKATULINA HAWAIIENSIS, new species. 



Shell ovate, white or slightly brownish, rather compressed, thin, 

 closel}^ radially finely threaded, the threads coarser and more dis- 

 tinctly granulated by incremental lines near the beaks; foramen in 

 the pedicel valve large, the deltidial plates narrow, oblique, widely 

 separated; peduncular collar strong, short, with free anterior edge, 

 dental processes strong, without props; brachial valve with the 

 dental plates rather widely separated, between tliem in the j^oung a 

 concave wide rugose cardinal process which in older shells becomes 

 irregular in shape and relatively less prominent: the loop is slender 

 and rather wide; the genital sinuses are profusely reticulated and 

 cover the whole disk of the valve to within a very short distance of 

 the margin. Length of shell, 19, width 15, diameter 8 mm. The 

 Australian specimen measures, respectively, 26, 20, and 12 mm. 



Type locality. — Hawaiian Islands, Bureau of Fisheries. 



This species appears to be separated from its nearest relations by 

 details of the cardinalia and especially by its densely reticulate 

 genital sinuses which exhibit less bilateral symmetry and simplicity 

 than in any other species known to me. Externally it seems most 

 like T. callinome Dall, which has quite simple and regular reticulate 



