58 BuLletiyi Vanderbilt Marine Museum, Vol. VI 



2a, t. XX, 1900, p. 243 ; Mem. Torino R. Ace. Sci., ser. 2, t. 

 LVII, 1907, p. 366.— Rathbun, M. J., Rept. U. S. Comm. Fish 

 and Fisheries, for 1903, Bull. XXIII, 1906, p. 896.— Balss, 

 H., Ostasiatische Decapoden II, Natantia and Reptantia Mun- 

 chen, 1914, p. 81. 



Parribacu^ ursv^ major, de Man, J, G., Siboga-Expeditie, Monogr. 

 39A-2, pt. Ill, 1916, p. 93. 



Parribacus antarticus, Edmondson, C. H., Bull. B. P. Bishop Mus. 

 Honolulu, vol. V, 1923, p. 28. 



Genus: THENUS Leach 

 Thenus orientalis Leach 



Plates 14 and 15 



Type : Rumphius' type came from Amboina and was deposited 

 in his private cabinet. Lund cited the East Indies and China as the 

 type locality in his description, which was based on material in 

 the collections of the Copenhagen Museum. 



Distribution: This species has a wide distribution, having 

 been recorded from the Red Sea, eastward through the Persian 

 Gulf, the Indian Ocean, Malaysia and Australia, down to Mada- 

 gascar and Natal, South Africa, in depths varying from shallow 

 water to 55 fathoms deep. The following localities have been cited : 

 Red Sea (de Man) ; Massaouah (Nobili) ; Persian Gulf, Stations 

 39 and 56 (Nobili, de Man) ; Madras and south Indian coast gen^ 

 erally (Henderson) ; Pescadores Island (Balss) ; Mergui Seas, 

 Amboina (de Man) ; Indian Ocean, India, Cebu, P. I., Singapore 

 (Ortmann) ; Singapore (Nobili, Boone) ; Kelatan, Trengganu, 

 Lanchester, West Borneo (Miers) ; Arafura Sea, south of New 

 Guinea, "Challenger," Station 188, depth 28 fathoms (Bate) ; 

 Broome, Australia, 18 fathoms (Balss) ; Kermadec Islands (Chil- 

 ton) ; Saya de Mahla Bank, Seychelles Islands, 55 fathoms ( Bor- 

 radaile) ; Madagascar (Hoffman) ; Araatikulu River, N. W. by W., 

 1/2 W. 12 miles. Natal, South Africa, 26 fathoms (Stebbing). 



Material examined: One specimen, 190 mm. long, from 

 Singapore, Malay States, November 10, 1931. 



Technical description: Specimen 190 mm. long, from apex 

 of antennae to posterior margin of telson. Carapace 45 mm. 

 wide from tip to tip of postorbital spines; 30 mm. wide across 

 posterior margin ; 24 mm. long in the median line. Carapace one 



