146 Transactions.-— Zoology. 
Among these was one belonging to the very remarkable genus Apseudes. 
Of this genus there are two species given in Bate's and Westwood's ** British 
Sessile-eyed Crustacea," and Mr. Haswell has lately described one from 
Australia,* but the animal I have does not belong to either of these three 
species. 
For the sake of those who may not be able to consult Bate's and West- 
wood's book, I transcribe the generic characters. 
Genus Apseudes, Leach. 
(Bate's and Westwood's “ British Sessile-eyed Crustacea,” vol. ii., p. 144.) 
“ Body elongated. Head and first segment of the pereion confluent. 
Upper antennz longer than the lower, with the first joint of pedunele long 
and robust, the flagellum consisting of two elongated articulated filaments. 
First pair of gnathopoda chelate; second pair having the propodos trans- 
versely dilated. Pleon terminated by a large segment bearing two long and 
two short slender filaments." 
Apseudes timaruvia, sp. nov. Pl. XVIII. 
Front of cephalon broad, with a slight projection in the centre, and pro- 
duced into a sharp point immediately in front of the eyes. Eyes small. 
Upper antenne with the basal joint of peduncle very large and strong, with 
a prominence on the inside; second joint fully twice as long as the third. 
Flagellum not so long as peduncle, secondary flagellum rather more than 
half as long as the primary. First pair of gnathopoda very large and 
strong, fixed finger with a prominence on its inner surface, and having the 
end tipped with hairs. Propodos of the second pair of gnathopoda not 
dilated. Pleon short, sixth segment not longer than the rest together. 
Terminal tail-legs with the outer branch half as long as the inner. 
Colour, light brown. 
Length, about + of an inch. 
Hab. Timaru. 
Of this species I have obtained a single specimen only, but I have 
examined it with considerable care and made as much as I could out of it, 
because it belongs to a very remarkable genus of Crustacea. Bate and 
Westwood in their book on the British Sessile-eyed Crustacea say ‘ this is 
one of the most interesting genera of Crustaceous animals." This is be- 
cause it possesses both Isopodan and Amphipodan characters, and also 
some that belong to the Maeroura; the union of the head with the first 
thoracic segment into a “ carapace," and the great chelate gnathopoda 
make the dorsal view very like that of a Macrourous Decapod. 
The animal I have described differs from the other species of the genus 
in some points, as will be seen from the fuller description given further on, 
* Proceedings Linnwan Society of New South Wales, Vol. VI., Part the Second, p. 193. 
