40 
AUSTRALIAN FRESHWATER AND LAND CRAYFISHES 
Great chelae smooth or setose; propodus twice as long as broad, upper 
margin with a few small tubercles posteriorly, smooth anteriorly, lower 
margin smooth, several small tubercles along the cutting edge; dactylus 
short and stout, upper margin smooth, one large and a few small tubercles 
along the cutting ege. Carpus and merus each with a row of small tubercles 
along the upper margin. 
Posterior pleurobranch rather long and well developed. 
Habitat. — Victoria: Cann River Valley (J. B. Ponder) ; Scanlon’s Creek; 
Orbost (E. Clark). 
Near E. marmoratus sp. nov., but readily separated by the 
form of the great chelae and the sternal keel. Some of the 
specimens have the great chelae covered with numerous tufts 
of long stiff setae. 
Bibliography, 
1. Caiman, W. T. Notes on a Crayfish from New Guinea. Ann. Mag. 
Nat. Hist., viii. (8), 1911, p. 366-368. 
2. Clark, E. The Freshwater and Land Crayfishes of Australia. Mem. 
Nat. Mus., Viet., x, 1936, pp. 5-58, pis. i-xi. 
3. Clark, E. Notes on the Habits of Land Crayfishes. Viet. Nat., liii, 
1936, pp. 65-68. 
4. Clark, E, Tasmanian Parastacidae. Papers & Proc. Roy. Soc. Tas- 
mania, 1938, pp. 117-127, pis. xii-xiii. 
5. Erichson, W. F. Uebersicht der Arten der Gattung Astacus. Arch, 
f. Naturg., xii, 1846, pp. 86-103. 
6. Gray, J. E. New Species of the Genus Astacus. Eyre’s Journ. Exped. 
Disc., Central Australia, i, (Appendix), pp. 407-411, pi. 3. 
7. Hess, W. Beitrage zur Kenntniss der Decapoden-Krebse Ost-Au.stra- 
liens. _ Arch. f. Naturg., xxxi, 1865, p. 164, pi. vii, fig. 17. 
8. Nobili, G. Ann. Mus. Civ. St. Nat. Genova, xl. 1899, p. 244. 
9. Nobili, G. Boll. Mus. Zook, Torina, 1903, xviii, p. 1. 
10. Roux, J. A propos des genres Astaconephrops Nobili et Cheraps 
Erichson. Zook Anz. Leipzig, 37, 1911, pp. 104-106. 
11. Roux, J. Nouvelles especies de decapodes d’eau douce provenant de 
Papouasie. Leyden Museum Notes, xxxiii, 1911, pp. 81-105, figs. 2-5. 
12. Smith, G. The Freshwater Crayfishes of Australia. Proc. Zook Soc. 
Lond., 1912, pp. 144-170, pk xiv-xxvii. 
13. Smith, G., and Schuster, E. H. J. The genus Engaeus, or the Land- 
Crayfishes of Australia. Proc. Zook Soc. Lond., 1913, pp. 112-127, 
pk xii-xxvii. 
14. von Martens, E. Uberblick der neuhollandischen Flusskrebse. Monats- 
ber. Akad. Wiss., Berlin, 1868, pp. 615-619. 
PLATE X. 
Chelae and parts of cephalothorax. 
Fig. 1. Cherax barretti sp. nov. 
2. C. rotundus sp. nov. 
3. C. davisi sp. nov. 
4. Geocharax laevis sp. nov. 
5. G. falcata sp. nov. 
6. Engaeus fultoni Sm. & Sch. 
7. E. marmoratus, sp. nov. 
8. E. orientalis sp. nov. 
