FRESHWATER AND LAND CRAYFISHES OF AUSTRALIA 
15 
School, 1935) ; Plenty River (S. A. Keartland, 1896) ; Barwon River (W. 
Kershaw, 1879) ; Watts River (S. W. Fulton, 1898) ; Kennedy’s Creek 
(W. A. Hall, 1897); Badger Creek (F. J. Williams, 1905). 
Type in National Museum, Melbourne. 
Described from a series of 40 specimens ranging in length 
from 90 mm. to 300 mm. The type of the species is a half- 
grown specimen 110 mm. long. Specimens equalling in size 
the largest E. serratus have been received by the National 
Museum since the species was described by McCoy. 
Readily separated from E. serratus by the very broad, 
highly-arched abdomen; the longer telson and uropods, and 
the reduction in size and number of spines on the carapace 
and abdomen; also by the great chelae being shorter and 
stouter, and the second antennae much shorter than in 
serratus. 
Euastacus nobilis (Dana). 
(PI. Ill, hg. 15.) 
Astacoides nobilis Dana, U.S. Explor. Exped., Crust., pt. 1, 1852, p. 526, 
pi. 33. 
Astacoides nobilis Hess, Archiv. f. Naturg., xxxi, 1865, p. 164; Heller, 
Reise Novara, Zool., ii, pt. 3, Crust., 1865, p. 101 ; von Martens, Ann. 
Mag. Nat. Hist., ser. 3, xvii, p. 360, 1866. 
Astacus nobilis von Martens, Monatsber. Akad. Wiss. Berlin, p. 616, 
1868. 
Astacopsis nobilis Haswell, Cat. Austrl. Mus., Crust., 1882, p. 175, 
Faxon, Proc. U.S. Nat. Mus., xx, p. 675, 1898; Faxon, Mem. Mus. 
Comp. Zool., xl, 8, 1914, p. 402. 
Astacopsis serratus Smith, Proc. Zool. Soc. Lond. 1912, p. 157. 
Astacopsis paramattaensis Spence-Bate, “Challenger Reports, xxiv, 
p. 202, 1888; Faxon, Proc. U.S. Nat. Mus., xx, 1898, p. 675. 
Length of average adult specimen, 320 mm. 
Rostrum one-fourth longer than broad at base, ape,x short and blunt ; 
lateral carinae sharp with three or four blunt spines; a blunt spine at base of 
carinae, and a large rounded boss posterior-laterally to it. 
Second antennae reaching fourth abdominal somite, squame smooth, inner 
lobe short and broad, sloping to a long sharp terminal spine. Interantennal 
spine rather long and narrow, bluntly pointed. 
Carapace twice as long as broad, broader than high, somewhat shorter 
than abdomen ; branchiostegites studded with numerous small tubercles, and 
six or seven large round tubercles in an irregular row on upper margin; 
two or three sharp spines on anterior margin. , , , , , 
First abdominal somite with a long sharp spine on lateral lobes; second 
with three long sharp spines on lateral margins, and a long spine above 
third- remaining somites each with three sharp lateral spines; dorsum of 
first four somites raised to large tumid ridges, occupying half the width of 
the somite. . . . , • 
Telson almost completely divided at middle by a tranverse suture, posterior 
half membranous; rather short, with a spine on each lateral margin at suture, 
