152 EHOPALOCEEA. 



Eab. North America, widely distributed. — Mexico, Santana below Tribo (Buchan- 

 Hepburn), Jalapa (Edge), Orizaba (Salle), Oaxaca (Fenochio). — Central and South- 

 eastern Europe. 



Mr. W. H. Edwards's exhaustive paper on this butterfly has been our chief guide in 

 determining the Mexican specimens of this Colias which we possess. Most of those 

 which have the locality precisely recorded are of the form or brood described under the 

 name of Colias Jceewaydin. Both forms known as C. eurytheme and C. ariadne also 

 occur in Mexico, but hardly in such abundance as the C. leeway din form ; the former 

 seems to belong to the Northern and Western Mexican States rather than to that of 

 Vera Cruz. 



The question of the succession of broods in Mexico and the order and proportion in 

 which they appear can only be investigated by a resident observer, but it seems probable 

 that they correspond to those of Texas, where there are said to be four annual broods — 

 the first flying from November to February, which consists of C. ariadne, the next of 

 C. keewaydin, the third of an intermediate form, and the last of C. eurytheme, the interval 

 between the successive broods being, as a rule, marked. If any form appears at all 

 out of its season it is not in sufficient numbers to invalidate the rule. 



Trifolium reflexum, one of the food-plants of this species, is found in Southern 

 Mexico, near Jalapa, and elsewhere *. 



2. Colias philodice. 



Colias philodice, Godt. Enc. Meth. ix. p. 100 1 ; W. H. Edw. Butt. N. Am. ii. Colias, 2 3 2 • 

 Elwes, Trans. Ent. Soc. Lond. 1884, p. 16 \ 



Alis vivide flavis, anticis macula ad cellulae finem, apice et margine externo fuscis, venis ad apicem flavis ; 

 posticis puncto aurantio ad cellulae finem, margine externo angulum analem versus evanescente fusco : 

 subtus flavis, anticis puncto in cellula nigro serieque submarginali fuscis; posticis puncto in cellula 

 altero minutissimo supra eum ferrugineo circumcincto serieque punctorum margini subparalleli roseis 

 puncto ad basin ciliisque omnibus coloris ejusdem. 



2 mari similis, sed anticis margine externo plus minusve indistincte flavo maculato. 



Eab. North America 1 from Canada southwards. — Guatemala, Duenas (F. J). G. 

 <& 0. S), Calderas (Champion). 



The only specimens we have of this species from our country were taken in the open 

 plain near Duenas at an altitude of nearly 5000 feet, and at Calderas on the slope of the 

 Volcano de Fuego at 7300 feet above the sea. These include several examples of both 

 sexes which do not differ materially from others from New Brunswick and Long Island. 

 The males correspond with the specimen figured by Mr. Edwards on plate iii. f. 3, 

 except that the outer borders of both wings are broader. The discovery of this species 

 in Guatemala is somewhat remarkable, as it extends our knowledge of its range 

 southward very considerably, for hitherto we have no record of it south of Texas. 



* Biol. Centr.-Am., Botany, i. p. 233. 



