THE LAND CRAYFISHES OF AUSTRALIA. 123 



propoclite serrated. There is a single row of tubercles on the 

 upper and inner border of the carpopodite, and a row of tubercles 

 on the upper border of the meropodite. The shape of the chelae 

 is somewhat elongated, and one is generally enlarged, the other 

 remaining slender. 



The rostrum ends in a rather blunt upcurved spine, which is 

 shorter and blunter than in the two preceding species. 



The uropods exhibit a peculiar and highly characteristic modifi- 

 cation, in that both endopodite and exopodite are produced 

 distally into pointed apices, giving the tail-fan a leaf-like appear- 

 ance (PL XIX. fig. 31). 



Length of specimen figured from tip of rostrum to end of telson, 

 59 mm. 



Localities. ISTarracan River, Thorpdale, Trafalgar. All these 

 are Gippsland localities to which the species appears to be 

 confined. 



Variety. The rudimentary exopodite of third maxillipede varies 

 in size in the different specimens, and in one specimen from a 

 small stream near Thorpdale, Gippsland, collected by Mr. Kershaw 

 in March 1890, the exopodite is reduced to a small papilla. 



Eng^us hemicirratulus, sp. n. (Pis. XX.-XXII. figs. 34, 35, 

 37, 38.) 



The posterior pleurobranch is entirely absent. 



The exopodite of the third maxillipede is absent. 



The antennal scale ends in a prolonged curved and blunt spine, 

 and the inner lobe is small (PI. XXII. fig. 37). 



The first antenna has only one flagellum, the inner flagellum 

 being entirely absent (fig. 38). 



The upper and under and posterior borders of the propodite of 

 the chela are studded with marked tubercles, as are also the 

 borders of the cai-popodite, so that the chela as a whole has a more 

 tubercular appearance than in any of the other species. One 

 chela is generally more stoutly developed than the other, some- 

 times on the right side and sometimes on the left. The pencils 

 of hairs on the chelfe are more conspicuous than in preceding 

 species. 



There are no sperm-receptacles with conspicuous openings in 

 the female. 



The eyes are not markedly reduced. The rostrum has a con- 

 spicuous rounded hump at its base, but is flat and keelless distally 

 and ends in a blunt spine. Just proximal to the point of the 

 spine is a conspicuous bunch of hairs. The contour of the fore- 

 head is not at all steep. 



The thorax is vaulted and deep as in the preceding species ; 

 the abdomen is reduced and hairy. The tail-fan is normal in 

 shape, but the pencils of hairs upon it are particularly conspicuous. 



Colour. (From coloured figures by McCoy.) Cai'apace dull 

 purple. Chelae reddish. Legs and abdomen brownish grey. 



Length 51 mm. 



