376 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



from Pocillopora coral. This is evidence that the species does not travel 

 far from the mainland, the most remote locality on record being Cocos 

 Island (Boone, 1927). Finally, Cuming, the collector, is known to have 

 visited Santa Elena Bay, Manta Bay, and the Bay of Panama, the latter 

 two being localities from which M. (M.) denticulatus has been obtained 

 in recent years. It is also known that Cuming kept no written records, 

 but trusted to his voluminous memory for scientific data. It seems clear 

 to the writer, therefore, that the types of Mithrax denticulatus were 

 obtained at one of Cuming's mainland localities, and not in the Galapagos 

 Islands, where it was said by Bell (1836, p. 55) to be "found by Mr. 

 Cuming in considerable numbers with the former [M. nodosus]." The 

 type locality of M. (M.) denticulatus is hereby corrected to Manta Bay, 

 Ecuador, and a neotype is established for the species. 



Mithrax (Mithraculus) nodosus Bell 



Mithrax nodosus Bell, 1835b, p. 171 ; 1836, p. 53, pi. 11, figs. 1, la, lb. 



Miers, 1886, p. 87. Rathbun, 1892, p. 273; 1898, p. 579; 1902b, 



p. 284; 1910, p. 575. Schmitt, 1939, p. 25. Meredith, 1939, p. 107 



(figured). 



Mithraculus nodosus, White, 1847, p. 7. A. Milne Edwards, 1875, 



p. 108; 1878, pi. 23, figs. 5, 5a-d. 

 Mitraculus ruber, Cano, 1889, pp. 102, 185. (Not Mithraculus ruber 



Stimpson.) 

 Mithrax (Mithraculus) nodosus, Rathbun, 1925, p. 429, pi. 155, text- 

 fig. 127. Boone, 1927, p. 158, fig. 50. Finnegan, 1931, p. 625. 

 Sivertsen, 1933, p. 12. Hult, 1938, p. 12. Garth, 1946, p. 392, pi. 

 68, fig. 1 ; 1957, p. 31. 



Type: Bell's type material consisted of the figured male and one or 

 more cotypes; length of measured cotype 25.4 mm, width 31.7 mm; 

 these were originally deposited in the Museum of the Zoological Society 

 [London] and in the Bell Museum, but are no longer extant. 

 Type locality: Galapagos Islands; Hugh Cuming, collector. 

 Localities subsequently reported, with collectors: Galapagos Islands: 

 Floreana [Charles] Island, Vet tor Pisani (Cano, as Mitraculus ruber) ; 

 Chatham Island, W. H. Jones (Rathbun, 1892); Hood and Duncan 

 Islands, Albatross (Rathbun, 1898) ; Albemarle Island, Hopkins-Stan- 

 ford Expedition (Rathbun, 1902b) ; Indefatigable Island, R. Blomberg 

 (Hult) ; James and Narborough Islands, Houston (Schmitt) ; Barring- 

 ton, Seymour, Tower, Bartholomew, and Marchena [Bindloe] Islands, 

 Velero III (Garth). Not Chile (Miers). 



