58 rroceedings of the Royal Society of Victoria. 



Colour. Spirit specimens uniformly dark yellow. 



Length. — 6.5 m.m. 



Occurrence. — From a spring at Collin's coach stage, near to- 

 Wood's Point. Altitude about 3000 feet. (Collected by Mr. 

 S. W. Fulton.) 



Eemarks. — This species is easily distinguished from N. spenceri 

 by its narrower side-plates (that of the first pair being distally 

 much narrower and somewhat shorter than the succeeding one), 

 by the penultimate segment of the metasome having its ventral 

 margin not so curved, and furnished with a stout spine, by longer 

 legs, and the dactyli only possessing one spine on the inner 

 margin, not three, by the almost circular eyes, and by a much 

 narrower telson. From N. thomsoni by the deeper side-plates, 

 the much longer terminal uropods and antennae, which in the 

 upper ones bear a longer terminal peduncular joint, by the 

 character of the eyes and telson, as well as by several other 

 features. 



EXPLANATION OF PLATES. 



Plate IV. 



Chiltonia subtenuis, n. sp. 



Plate V. 

 Atyloides fontana, n. sp. 



Plate VI. 



Gammarus haasei, n. sp. 



Plate VII. 

 Neoniphargus fultoni, n. sp. 



The following lettering is used to designate the corresponding 

 parts: — C. cephalon ; Ms., mesosome; Mts., metasome; Ur., 

 urosome; A^, superior antennae; A'., inferior antennae; L^, 

 anterior lip; L'^., posterior lip; M., mandibles; m\, first maxillae; 

 m'^., second maxillae; mp., maxillipedes; Gn^ and Gn-., 

 guatliopoda, first and second pairs; Pr\-Pr\, pereiopoda, 

 first to fifth pairs; U^-U^, uropoda, first to third pairs; 

 T., telson. 



