248 OX AUSTRALIAN AMPIIIPODA. 



it is confined to a maritine belt of moderate breadth, as I am 

 informed that it is not met with in the far interior. I have never 

 observed it on the sea-shore. 



Genus Talorchestia, Dana. 



Talorchestia diemenensis, sp. nov. (PL VII., fig. 6.) 



Superior antennae equalling the cephalon in length. Inferior 

 antennre equal in length to the cephalon and first three segments 

 of the pereion, the third joint short, the fifth the longest ; flagellum 

 subequal with the peduncle, fringed with short hairs. Anterior 

 gnathopoda in the male with the carpus broad distally, the 

 propodos quadrangular, twice as long as broad, the palmar border 

 transverse, slightly sinuous, the dactylos short ; in the female 

 with both carpus and propodos narrower than in the male, the 

 palmar border with a deep mesial notch, the dactylos well- 

 developed. Posterior gnathopoda in the male large, the propodos 

 compressed, irregularly cordif orm with the palm oblique, defined 

 by a rounded tooth ; in the female small, imperfectly subchelif orm, 

 the propodos narrow, nearly thrice as long as broad, parallel- 

 sided, with the palm oblique, the dactylos rudimentary. Pereiopoda 

 setif erous ; third pair much shorter than fourth and fifth. Telson 

 triangular, blunt. 



Length three lines. 



Sab. Tasmania, (M.-M.) 



Talorchestia quadrimana, PI. VII., fig. 3. 

 Orchestia quadrimana. Dana, Proc. Amer. Acad. Sci. Host, ii., 

 204; U. S. Exploring Exped. p. 879, pl. 59. f. 7 ; Spence Bate, 

 Cat. AmpTi. p. 31, pl. v., fig. 3. 



From the locality whence Dana obtained his specimens, and 

 from his description lam inclined to place the common Talorchestia 

 of New South Wales under this heading, though the form of the 

 posterior gnathopoda, as shown in Dajaa' s figure, is totally unlike 

 that of those organs in any of the specimens I have examined. 



