EUPHOEIA. 363 



hasty conclusion that Euphoria was admitted only on considerations of geographical 

 distribution, and that it should be merged together with numerous Old-World genera 

 under Euryomia. Dr. Horn, rightly, considered that the author of the ' Genera ' in 

 this proceeded too far. On the examination of a large series of species and individuals 

 it is found that the clypeus in this group is exceedingly variable : first, to a minor but 

 still considerable extent among individuals of the same species, and, next, in various 

 degrees from one closely allied species to another ; the variability of this important 

 member may in fact be adduced as one of the characters of the genus, the variations 

 being modifications of a certain typical form, i. e. narrowed anteriorly with the apical 

 margin more or less reflexed and sinuated. The most constant structural feature is 

 that of the mesosternal process, which is always horizontal and more or less dilated 

 and rounded at its apex. 



About 45 species have been described, the great majority from the United States 

 and Mexico. 



I. 



1. Euphoria lesueuri. 



Cetonia Lesueur, Gory & Perch. Monogr. Cetoin. p. 212, t. 39. fig. 1 ( ? )\ 

 Euphoria Lesueurii, Burm. Handb. der Ent. iii. p. 372 ( ? ) 2 . 

 Cetonia Latreille, Gory & Perch, loc. cit. p. 213, t. 39. fig. 3 ( $ ) \ 

 Euphoria Latreillii, Burm. Handb. der Ent. iii. p. 373 4 . 



Ilab. Mexico 1 2 3 4 , Orizaba, Juquila, Capulalpam, Tepansacualco (Salle), Jalapa, 

 Almolonga (Hbge) ; Guatemala, Sinanja and Purula in Vera Paz (Champion), Coban in 

 Vera Paz (Conradt). 



A large series of examples. M. Salle took E. latreillei and E. lesneuri in copula, and 

 convinced himself that the former (velvety-opaque above and generally smaller) is the 

 male of E. lesueuri, distinguished by its glabrous and shining thorax, more spotted 

 elytra, and generally larger size. The external characters of the male, one or other of 

 which is commonly present in the Cetoniidse, fail entirely in this species, the pygidium 

 only showing a slightly greater convexity in some examples ; but on dissection, examples 

 of E. lesueuri are found to be males. The species varies in colour from green to dark 

 purple and olivaceous-black, and the size from 16 to 22 millim. 



2. Euphoria westermanni, 



Cetonia Westermann, Gory & Perch. Monogr. Cetoin. p. 212, t. 39. fig. 2 (c?) 1 . 

 Euphoria Westermanni, Burm. Handb. der Ent. iii. p. 374 (J) 2 . 



Hal. Mexico : 2 , South Mexico (Sturm, in coll. Salle}, Juquila (Salle). 



Three examples, males, all agreeing in the long and rather dense pubescence on the 

 forehead, sides of the thorax, and under surface of the body, two of them in the tubercle 

 on the crown and the long antennal club-characters which Burmeister adduces as distin- 



3AA2 



