38 
FRESHWATER AND LAND CRAYFISHES OF AUSTRALIA 
Cervical groove feebly impressed, areola fairly broad. Uropods rounded. 
Great chelae slender, a row of feeble tubercles on upper margin, lower 
margin smooth ; under surface with a covering of downy hair 
SERICATUS sp. nov. 
Great chelae stout, a single row of tubercles on upper margin, lower 
margin with a smooth ridge QUADRIMANUS sp. nov. 
Great chelae stout, a double row of tubercles on upper margin, and a 
Single row on lower margin . . FOSSOR Erich. 
Abdomen shorter than carapace. Sternal keel without openings on lateral 
processes. 
Cervical groove deeply impressed. 
Areola broad; inner rami of uropods rectangular, transverse sutures 
strong TUBERCULATUS sp. nov. 
Areola narrow; uropods rounded, transverse sutures strong 
VICTORIENSIS Sm. and Sch. 
Cervical groove obsolete, branchio-cardiac grooves deeply impressed, 
areola fairly broad. 
Carapace, abdomen and chelae densely hirsute . . VILLOSUS sp. nov. 
Cervical groove and branchio-cardiac grooves obsolete, areola fairly broad. 
Uropods rounded, transverse sutures feeble AFFINIS Sm. and Sch. 
Engaeus cunicularius Ericlison. 
(PI. VIII, fig. 35.) 
Astacus (Engaeus) cunicularius Erichson, Arch. f. Naturg., xii, 1846, 
p. 102. 
Astacus cunicularius von Martens, Monats. Akad. Wiss. Berlin, p. 169, 
1868. 
Engaeus cunicularius Haswell, Cat. Austrl. Mus., Crust., 1882, p. 179, 
Thomson, Papers and Proc. Roy. Soc. Tas., p. 50, pi. 1, figs. 1-2, 
1892; Faxon, Proc. U.S. Nat. Mus., xx, p. 676, 1898; Ortmann, 
Proc. Amer. Phil. Soc., xli, p. 292, 1902; Smith and Schuster, Proc. 
Zool. Soc. Lond., p. 124, 1913 ; Faxon, Mem. Mus. Comp. Zool., 
xl, 8, p. 403, 1914. 
Length of average adult specimen, 60 mm. 
Rostrum broad, reaching to base of third segment of first antennae, apex 
blunt, slightly upturned; carinae sharp, carried well back on to carapace. 
Eyes large. First antennae with inner flagella slender, seven-eighths as 
long as outer. Squame of each second antenna with a sharp terminal spine, 
inner lobe broad posteriorly. Interantennal spine elongated, triangular, bluntly 
pointed. Exopods of third maxillipedes long and slender. 
Carapace punctate, shorter than abdomen, cervical groove and branchio- 
cardiac grooves deeply impressed, areola broad. Branchiostegites minutely 
tuberculate. 
Sternal keel narrow, very sharp ; first three pairs of lateral processes 
rudimentary ; posterior pair large, slightly grooved ; processes between 
fourth pereopods small and stout. 
Telson rounded, a spine on lateral margins near posterior margin ; uropods 
rounded, longer than telson, each with a longitudinal median carina ending 
in a spine almost on posterior margin; inner rami each with a spine on outer 
