24 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



negan Passage [E of St. Thomas], 27 fms: Blake (A. Milne Edwards 

 and Bouvier). Barbados: Univ. Iowa Barbados-Antigua Exped. 

 (Schmitt, 1924b). Isla Vieja Providencia: Presidential Cruise of 1938 

 (Schmitt, 1939). Panama, Colon: E. Festa (Nobili, 1897). Aruba: 

 P. Hummelinck (Schmitt, 1936). Curasao: J. Boeke (Rathbun, 1920) ; 

 C. J. van der Horst (Schmitt, 1924a). Bonaire: P. Hummelinck 

 (Schmitt, 1936). Brazil: (Ortmann, 1892); Mamanguape: A. W. 

 Greeley (Rathbun, 1900); Pernambuco: Vettor Pisani (Cano) ; Boa 

 Viagem, Pernambuco, and Maceio, Alagoas: A. W. Greeley (Rathbun, 

 1900) ; Bahia: (Moreira, 1901) ; Rio de Janeiro: U. S. Expl. Exped. 

 (Dana) ; Ilha Trindade: Barroso (Moreira, 1920). 



Material examined. — 

 Marco Island, Florida; Sept 15, 1950; shore; coll. L. O. Miles. 2d, 



5? (2 ov). Taken off "finger sponge" in lagoon. 

 N end of Marco Island, Florida; Sept 16, 1950; shore; coll. L. O. 



Miles. l?ov. 

 Lower Matecumbe Key, Florida; Sept 23, 1950; coll. L. O. Miles. 



Id, 1?. 

 A50-39. Bahia Caledonia, Panama; Apr 26, 1939; shore. l?ov. 

 A25-39. Isla Cubagua, Venezuela; Apr 14, 1939; shore. 2cf , 5$. 

 A35-39. Port-of-Spain, Trinidad; Apr 18, 1939; 1-3 fms. 1?. 



Measurements. — Males, 3.1 to 7.1 mm; non-ovigerous females, 3.7 

 to 8.9 mm ; ovigerous females, 5.5 to 8.5 mm. 



Remarks — PetroUsthes galathinus has been taken to a depth of 27 

 fathoms, and in the littoral among rocks and in sponges, corals, and 

 colonies of the anemone Zoanthus sociatus. 



In addition to its extensive range in the Atlantic, the species has 

 been reported from the Pacific side of Panama as PetroUsthes occiden- 

 talis (several authors) and as P. galathinus (Boone, 1931; Schmitt, 

 1935). 



Gibbes (1854, pp. 8-10) reviewed the complicated early history of 

 the synonymy of P. galathinus. Guerin-Meneville did the same in the 

 French edition of Sagra's work on Cuba (Guerin, 1857b, pp. xxxix-xli, 

 footnote), although his discussion did not appear in the Spanish edition 

 of the same work. Guerin-Meneville's account reveals that although he 

 was critical of the way in which some of the earlier authors treated the 

 species, he himself was guilty of misstatements and carelessness in citing 

 the work of others. For example, he said that Bosc, in his original 

 description (1801-2), reported the species from the Antilles; but Bosc 

 actually stated "On ignore son pays natal" and it was Latreille (1802- 

 3) who attributed it to the Antilles. 



