DESCRIPTIONS OF SPECIES. 



Order LAMELLIBRANCHIATA. 



Family Pholadid^. 



Subfamily Teredinin^. 



Teredo, Linne. 

 Teredo sp. 

 Habitat. — Station 184, east of Cape York (in 1400 fathoms ?) ; Globigerina ooze. 



A single very small specimen, all that was obtained, may possibly be the young state 

 of the Teredo mentioned in the Eeport of the collections made during the Voyage of 

 H.M.S. "Alert" in Torres Strait. The striae on the anterior part of the valves are, 

 however, rather coarser. Although from Station 184, to which a depth of 1400 fathoms 

 is assigned, it seems probable that this sheU, which contained the animal, got into the 

 trawl near the surface, during the process of hauling in. This, however, is not certain, 

 for water-logged wood might be found at that depth into which it might bore. 



Subfamily PnoLADiNiE. 

 Martesia, Leach. 



Martesia striata (Linne). 



P?wlas striata (Linne), Sowerby, Thesaurus Conch., vol. ii. p. 494, pi. civ. figs. 40-42, pL cv. 



figs. 43, 44. 

 Pholas striata, Sowerby, Conch. Icon., vol. xviii. figs. 32a-c. 

 MaHesia striata, II. ami A. Adams Genera, vol. iii. pi. xc. figs. 5, 5a. 



Habitat. — Station 190, Arafura Sea, in 49 fathoms; green mud. 



Specimens from this locality present very slight if any variation in sculpture, but 

 difl'er somewhat in the length of the hinder prolongation of the valves, and in the form 

 of the anterior dorsal plate. 



