74 Bulletin Vanderhilt Marine Museum, Vol. V 



Distribution: In addition to the type locality, this species has 

 been taken in the Red Sea, (Ortmann), Djeddah, Red Sea, (de Man) ; 

 Tor, Djeddah, Cameran, Zebejir Island, Red Sea, (Balss) ; several 

 places in the Red Sea, (Nobili) ; Elphinstone Island, Owen Island and 

 King Island, Mergui Archipelago, (de Man) ; Rameswaram, common 

 between tidemarks, Tuticorin, Madras, (Henderson) ; Mysore, (Thall- 

 witz) ; Minikoi, reef, (Borradaile) ; Krusadai Island, Gulf of Manaar, 

 (Gravely) ; Flinders Entrance, near Mer, 20 to 30 fms., channels be- 

 tween reef, Murray Island, 15 to 20 fms., Torres Straits, (Caiman) ; 

 Java, Sumatra, (A. M. Edwards) ; Pulo Edam and Onrust, Java, 

 Batavia Bay, Palos Bay, west Celebes, Amboina, (de Man, Ley- 

 den coll.) ; Celebes and Timor, (Thallwitz) ; Makassar, Celebes, 

 (Schenkel) ; Tjilatap, Java, (Pesta) ; Malay, Ternate, Tongatabu, on 

 reefs, (Miers) ; Singapore, (Rathbun) ; Amboina, Tahiti, Samoa, 

 (Ortmann) ; Fee Jee Islands, (Dana) ; Sarong, Dutch New Guinea, 

 (Rathbun); Australia, (Haswell; Hess; A. M. Edwards); Norah 

 Head, New South Wales, 32 fms., (Whitelegge) ; Mayotte, Reunion 

 Isle, Mauritius, (A. M. Edwards) ; Chaland, Port Louis and Grand 

 Port, Mauritius, (Bouvier) ; Egmont, reef, Cargados, reef, Seychelles, 

 Coetivy, (Rathbun) ; Madagascar, (Pesta) ; Nosse Be and Nosse Faly, 

 Madagascar (Hoffman) ; east coast of Madagascar, (Gravier) ; Dela- 

 goa Bay, Portuguese East Africa, (Barnard) ; Zanzibar, Kokotoni, 

 Bawi, East Africa, (Balss) ; South Africa, (Stebbing) ; Hawaiian 

 Islands, (A. M. Edwards) ; Palmyra Island, (Streets) ; Fanning 

 Island, (Edmondson) ; Japan, China, Loo Choo Islands, Cochin 

 China, (A. M. Edwards) ; Tokio Bay, Japan, (Ortmann) ; Sagami 

 Bay, Japan, (Doflein) ; Formosa, (Pesta) ; Loo Choo Islands, (Stimp- 

 son). 



Material examined: Fifteen specimens, including ovigerous fe- 

 males, non-ovigerous females and males, collected on coral reef, Falcon 

 Island, Palm Islands, Queensland, Australia, October 7, 1931. 



Color : Violet and green with brownish green spines. 



Technical description : Carapace trapezoidal, about one and one- 

 half times as wide as long, with the frontal margin very wide, equal 

 to about 1.1 times the length of carapace and cut into six very shallow, 

 blunted teeth, in addition to the well separated preorbital teeth, each 

 of which is nearly twice as wide as the adjacent frontal tooth, and is 

 produced to a slightly deflected right angle. The orbital margin is a 

 wide arc incised by two closed sinuses. Including the postorbital 

 tooth there are five acute teeth on the anterolateral margin, the post- 



