44 FRESHWATER AND LAND CRAYFISHES OF AUSTRALIA 
upturned ; carinae blunt, reaching almost to apex ; in some examples rostrum 
fairly broad, reaching to end of third segment of first antennae, carinae blunt, 
reaching almost to apex. 
Eyes small. First antennae with inner flagella one-half as long as outer, 
slender. Squame of each second antenna long and slender, sharply pointed. 
Interantennal spine triangular, bluntly pointed, surface either flat or concave. 
Exopods of third maxillipedes absent. 
Caparace punctate, longer than abdomen; cervical groove and branchio- 
cardiac grooves deeply impressed, areola narrow. 
Sternal keel sharp; lateral processes small and rounded, posterior pair 
deeply grooved ; processes between fourth pereopods short and stout, joined 
together above. 
Great chelae : propodus twice as long as broad, upper margin with a double 
row of small tubercles, lower margin smooth, or with an obsolete row of small 
tubercles, cutting edge with five large tubercles, two smooth carinae on upper 
and under surface reaching from apex to base of dactylus; dactylus long 
and stout, with three large tubercles on cutting edge, upper margin smooth, 
upper and under surface each with a smooth carinae reaching from apex 
to base; carpus with a row of tubercles on upper margin, and two or three 
rows of small tubercles on surface ; merus with a row of tubercles on upper 
margin. 
Posterior pleurobranch rudimentary. 
Colour. — Abdomen and carapace olive-green or reddish-brown; chelae 
dark olive green above, cream below ; tips of chelae, carpus and merus, and 
the pereopods reddish-brown. Whole animal with a translucent waxy 
appearance. 
Habitat. — Victoria : Dandenong Ranges (W. Kershaw, 1872); Box Hill 
(S. W. Fulton) ; Croydon (F. P. Spry, 1904) ; Ringwood (E. H. Hennell, 
1890); Ferntree Gully; Belgrave (F. Spry); Emerald (E. Jarvis, 1904); 
Gembrook (S. W. Fulton, 1906) ; Launching Place (J. Coghill, 1907) ; 
Woori Yallock (F. P. Spry, 1912) ; Warburton; Matlock (S. W. Fulton) ; 
Jumbunna (A. E. Kitson, 1901); Foster (J. Clark); Beaconsfield; Loch. 
Types in the National Museum, Melbourne. 
Fifty-eight specimens examined. 
Engaeus villosus sp. nov. 
(PI. I, fig. 10; PI. IX, fig. 36.) 
Male . — Length of average adult specimen, 67 mm. 
Rostrum broad, reaching almost to base of third segment of first antennae, 
apex sharp, straight ; carinae tuberculate, half as long as rostrum, continued 
to apex by three rows of long stout setae. 
Eyes large. First antennae each with inner flagellum one-half as long as 
outer. Squame of each second antenna very slender, inner lobe narrow, 
sharply pointed. Interantennal spine short, broad and rounded. Exopod of 
third maxilliped indicated by a small tubercle. 
Carapace slightly longer than abdomen ; cervical groove obsolete, branchio- 
cardiac grooves well defined, areola fairly broad. Branchiostegites and 
anterior of carapace densely, minutely, hirsute; long stout setae scattered 
over remainder of carapace. 
Abdomen broad, smooth, with numerous tufts of long setae. Telson 
broadly cone-shaped, without median or lateral spines; uropods large, 
