MESOSEMIA. 8383 
sicut supra sed ceruleo pupillato et fulvo ciliato, infra eum maculis irregularibus obscure fuscis, plaga 
submarginali fusca medialiter rufa, lineisque aliis transversis ad basin, posticis lineis novem obscure 
fuscis transverse notatis. 
mari similis, sed alis dilutioribus posticis lineis tribus transversim fuscis fere obsoletis notatis ; subtus plaga 
magna ad medium marginis externi fulva. 
Hab. Costa Rica, Cache (Rogers).—CoLomBIA. 
_ We have long had in our collection two damaged female specimens of this species 
which were sent us by Mr. Rogers from Costa Rica. The same insect has since been 
found by Dr. Staudinger’s collector, Herr Trétsch, at San Pablo, on the Rio San Juan 
in Western Colombia, and to Dr. Staudinger we are indebted for a male and two 
female examples. The latter have the transverse lines on the secondaries above rather 
more distinct than is the case in our Costa-Rica types, and the tawny rufous patch near 
the outer margin of the primaries beneath is not quite so distinct, but in spite of these 
slight differences we have no doubt they all belong to one species. 
f. Base of primaries and discal area of secondaries very dark blue ; female without blue, 
but with white subapical band. 
8, Mesosemia asa. (Tab. XXXVIII. fige. 109,119). 
Mesosemia asa, Hew. Trans. Ent. Soc. 1869, p. 35°. 
Mesosemia frequens, Butl. & Druce, Cist. Ent. i. p. 104’; P. Z. 8. 1874, p. 852°. 
Alis nigris, anticis ad basin chalybeo-ceruleis, ocello nigro albo pupillato ad cellule finem, fasciola nigra trans- 
cellulari intra eum ; posticis chalybeo-ceruleis nigro marginatis; subtus saturate fuscis extus aliquot 
nebulosis, fascia lata communi transversa lineis obscuris et pallidis marginata, ocellos includente ; posticis 
paulo productis. 
9 alis fuscis, triente apicali obscuriore, ocello sicut in mare sed fulvo ciliato, fascia transversa apicem versus 
alba; posticis lineis quatuor (marginem includente) transversis obscure fuscis ; subtus omnino dilutioribus, 
posticis aliquot irroratis. 
Hab. Nicaragua, Chontales (Belt); Costa Rica (Van Patten? ?), Cache (Rogers) ; 
Panama, Volcan de Chiriqui, Bugaba (Champion).—CoLomBIA. 
This Mesosemia appears to be very common from Nicaragua southwards to Colombia, 
and we have many examples from various points included in that area. Hewitson was 
the first to describe the male from Belt’s Chontales specimens; subsequently Messrs. 
Butler and Druce characterized the female from Costa-Rica examples contained in Van 
Patten’s collection. No doubt UW. asa and M. frequens are the sexes of one species. 
Hewitson compares it with WM. telegone ; but the resemblance is not very apparent. 
Mr. Champion, who took many specimens in the district of Chiriqui, found it in 
humid dense forest. ‘They frequently bask for a few moments on the upper side of a 
leaf on which a gleam of sunlight rests. 
