Neiv Victorian Fresh-ivater Amphipoda. 53 



inner angle two stout spines, and the margin between then^ and 

 the outer angle is fringed with long slender spinules ; ali^o on the 

 dorsal surface there is a row of eight long subapical spinules. 



Occurrence. — Besides Dandenong Creek, near Bays water, where 

 the type specimens came from, I have three specimens found 

 in association with Atyloides gabrieli, and a blind species 

 (Gammarus haasei) described below, which Mr. Haase collected 

 from a little rivulet in a fern gully at Monbulk, at an altitude of 

 about 800ft. 



Gammapus haasei, sp. nov. (PI. VT.). 



Body of similar form to G. australis, but rather deeper, 

 appendages not so densely setose, and not possessing eyes. 

 Segments of metasome dorsally possessing few, those of urosome 

 with many long fine spinules, which, in the two last segments, 

 almost obscure a small stout submarginal spine on each side of 

 the median line. Cephalon of equal length to the first two 

 segments of the mesosome combined. Coxal-plates more or less 

 spinose and setose, fourth as wide as its depth. Last pair of 

 epimeral plates of metasome with postero-lateral angle acute, 

 slightly acuminate, margin above with a few minute hairs, 

 ventral margin with two stout and two minute spines. 



Peduncle of upper antennae extending beyond the limit of the 

 penultimate joint of the lower, flagellum about two-thirds the 

 length of the body with 40-50 joints, accessory appendage with 

 3-5 joints. Lower antannae with flagellum of about 19 joints; 

 in the male with last joint of peduncle and about the first six 

 joints of flagellum bearing calceoli. 



Gnathopoda much more slender in female than in male. In 

 the female., hands comparatively small, the second with carpus 

 and propodus considerably longer than in the first pair, but of 

 sube(|ual form, carpus fully as long as propodus, propodus oblong, 

 subquadrate, palm almost transverse and straight, fringed with 

 spinules, and at the posterior angle, which is narrowly rounded, 

 three conspicuous spines, posterior margins of the two mentioned 

 joints with many transverse rows of setae, some of which are 

 faintly feathered, also a few little fascicles of setae along the 

 anterior margins, and, in the propodus, a few bunches scattered 



