T. D. A. COCKERELL. 105 



(9) Trachina King (for which I take Centris longbnava as 

 type) would be considered by many a homonym of Trachmus L. 

 Gundlachia wsis suggested by Cresson in 1865 for C. coruuta (which 

 Friese, 1902, says is difformis), but this name is a homonyn), and 

 was replaced by Heterocentris Ckll. Later, Friese proposed RJw- 

 docentris to include all the species with red or reddish alxlomen, his 

 first species being difformis. For the present, I treat Heterocentris 

 and Trachina as distinct subgenera. 



(10) Hemisia Klug, included two species of Cyanocentris and one 

 Trachina. I restrict it to the former, taking hceviorrhoidalis as 

 type. 



(11) Fiorentinia D. T. (Epeicharis Kach.) \s Tetrapedia. Type 

 T. mexicana (Rads.) 



(12) Exomalopsis cubensis Spinola, is omitted, being practically 

 a no men nudum. 



(13) Anthophora domingensis Lep., is given by Smith as from 

 S. Domingo, but according to Dours it is really from Senegal. ( 9 12 

 mm. long, face as in A. 4^-fasci.ata, hair of thoracic dorsum, etc., 

 red, mixed with black). 



(14) Anthophora holosericea Fab., from the West Indies, is 

 unknown to day, and of uncertain generic position. Jurine referred 

 it to Trachusa. 



(15) Anthophora r\ifozonana Dours, is evidently a misprint for 

 rufosonata, as the latter rendering appears in the table at tlie be- 

 ginning of the book, and also in the index. 



(16) Dr. Ashmead assures me that the S. American Ancijcloscelis 

 seen by him is Diadasia. The only species seen by me represents a 

 genus distinct from Diadasia. The genus is attributed to Latrielle, 

 1825, but apparently the first species actually described was A. 

 ursinus Haliday, 1836, and this, I suppose, must be taken as the 

 type. iVs I have never seen ursinus, I do not feel at liberty to 

 assume that it is a Diadasia. 



(17) Tetralo7iia S])\uo\ii, was based on Pakearctic forms. Spinola's 

 species included T. basizona from Egypt, etc. The name was to 

 replace Macrocera Latrielle (type the European malvce Rossi), which 

 is a honioTiym. The maxillary palpi are generally stated to be 

 5-jointed (cf. Ashmead, Patton, etc.), but I have examined T. 

 ruficollis from Algeria (one of the species originally placed in the 



TRANS. .\M. ENT. SOC. XXXII. (14) FBBRUAKY, 190G. 



