Victorian Decapod Crustacea. 67 



with specimens of liis species, from which ours may he dis- 

 tinguished hy the presence of three dorsal median spines, and by 

 its more slender form. 



The type has been deposited with the National Museum. 



Pontophilus flinders!, sp. nov. (PI. X., Fig. 3.) 



Thiii species somewhat resembles P. victoriensis (described 

 above) in its general form and proportions. 



The cephalothorax is bounded anteriorly by a rounded concave 

 rostrum of equal length to the eye stalks. The post-orbital 

 angles are well defined, and the lateral marginal angles form 

 distinct teeth, behind which the margins are cut into three large 

 forwardly directed spines. 



The upper surface forms a raised platform terminated anteriorly 

 by a curved ridge, which is continuous with the anterior half of 

 the orbital margins and the margin of the rostrum. This ridge 

 •extends backward on the dorsal surface parallel with the lateral 

 margins, behind the eyes it is cut into four small fine teeth. In 

 the median line, at its anterior fourth, there is a strong forwardly 

 -directed tooth or spine, slightly behind which on each side 

 between the ridge above mentioned and the lateral margin there 

 is another prominent spine. 



The abdomen is smooth and without distinctive features, except 

 that the last two segments are laterally compressed, giving them 

 -a somewhat carinate appearance. 



The telson is dorsally ridged and terminates in a brush of stiff 

 hairs. It only slightly exceeds in length the uropods, which are 

 also fringed. 



The first antennae have the basal joints considerably 

 lengthened, reaching to half the length of the squamae of the 

 second pair, beyond the end of which the two flagella scarcely 

 pass. 



The second antennae are furnished with very long and 

 fine flagella. 



The pereiopods in all their characters closely resemble those of 

 P. victoriensis. 



5a 



