86 Bulletin YanderMlt Marine Museum, Yol. Y 



Tribe: CYCLOMETOPA. 



Family: XANTHIDAE. 



Subfamily: Xanthinae. 



Genus : cakpilius Leach. 



Carpilius maculatus (Linne). 



Plates 39, 40, 41 and 42. 



Type : Linnaeus type came from Asia ; if still extant it probably is 

 in the collection of the British Museum. 



Distribution : Amboina (Rumphius) ; Waighen Island, (Nobili) ; 

 America, (Seba) ; Asia, (Linne) ; Malabar, (Herbst) ; Minikoi and 

 Maldive Islands, Rotuma : " It may be found wedged into holes in the 

 reef, just above low water mark, exposed to the full force of the surf." 

 (Borradaile) ; Hao Island, Ohura, lagoon, (Nobili) ; Raraka, Paumotu 

 Archipelago, (Dana) ; Paumotu Islands, reef, (Rathbun) ; Navigator 

 Islands, Manila, P. I., (Dana) ; Tahiti, Society Islands, (Stimpson, 

 Rathbun, Pesta) ; Sumatra, Samarang, (A. M. Edwards) ; Kema, 

 Makassar, Celebes, (Schenkel) ; Tami Islands, New Guinea; Sehif- 

 fer's Island, (de Man) ; Indian Ocean, (A.M. Edwards) ; Gocos-Keel- 

 ing atoU, (Caiman) ; Andaman Islands, Nicobar Islands, Palk Straits, 

 (Alcoek) ; Isle de France, (A. M. Edwards) ; Reunion, New Caledonia, 

 (A. M. Edwards) ; Mauritius, (Richters, Pesta) ; Port Louis, Mau- 

 ritius, (Bouvier) ; Isle of Nosse-Faly, (Hoffman) ; Madagascar, (Ort- 

 mann) ; Honolulu, Hawaii, on the reefs, (Miers) ; Hawaii: Honolulu, 

 market; Puako Bay; Hilo; Oahu; Laysan Island, (Rathbun, Lenz) ; 

 Fanning Island, (Edmondson) ; Upolu, Samoa; Solomon Islands, 

 (Pesta) ; Payta, (Cano) ; Holborn Island, off Port Dennison, Queens- 

 land, (McCulloch and McNeill). 



Material examined : Two large females and one large male, from 

 Papeete, Tahiti, Society Islands, August 15, 1931. One large male 

 and one large female, taken on Venus Reef, Tahiti, Society Islands, 

 August 15, 1931. All collected by the "Alva." 



Technical description : Carapace oval, decidedly convex, in both 

 directions, smooth except for some rather coarse punctae in the antero- 

 lateral regions; there is no delineation of the regions except a faint 

 indication of the urogastric line. The frontal margin is obliquely 

 deflexed, with decidedly thickened edge, the median lobe definitely 



