254 EHOPALOCEKA. 



stouter antennae, the primaries are more elongated, the cell being very long. In the 

 secondaries the second branch of the submedian is emitted at or about the end of the 

 cell, and the hind tibia? are destitute of a dorsal fringe of hairs. 



1. Mysoria Venezuela. (Tab. LXXIII. fig. 17.) 



Pyrropyga acastus, auctt. (nee Cram.), Math. Ent. Monthly Mag. xix. p. 19 l . 

 Pyrropyga Venezuela, Scudder, Rep. Peab. Ac. Sc. iv. p. 67 (1872) 2 . 

 Pyrrhapyge Venezuela, Watson, P. Z. S. 1893, p. 12 . 



Alis chalybeo-cyaneis ad basin viridescentioribus, ciliis albis ; capite postico, palpis bitriente basali et abdo- 

 minis apice coccineis : subtus ut supra, posticis costa anguste coceinea, margine externo late (angulum 

 analem haud extensa) luteo ; corpore linea laterali utrinque et abdomine maculis duabus utrinque 

 coccineis. 



Bab. Mexico, Cordova (Rumeli) ; Guatemala, Polochic Valley (F. D. G. & 0. S.) ; 

 Nicaragua, Chontales (Belt) ; Panama, Bugaba (Champion), Chiriqui (Arce, Trotsch), 

 Calobre (Arce).— South America, Taboga I. (Mathew x ), Colombia and Venezuela 2 to 

 S. Brazil and Paraguay. 



This insect has usually passed under the name of Papilio acastus, Cramer, but a 

 careful examination of Cramer's figure, a very poor one, leads us to believe that two 

 species have been confused under this name ; the figure shows no red costal margin on 

 the underside of the secondaries, universally present in specimens from the greater 

 portion of tropical South America. We should not think so much of this fact were it 

 not that we possess a specimen, taken by Whitely near Roraima, in British Guiana, 

 which exactly agrees with Cramer's figure and has no trace of a red costal margin. 

 Cramer's title therefore strictly belongs to the Guianan insect, and that applicable to 

 the much commoner and more widely spread form is P. venezuelw, Scudd., a name 

 which has not been recently recognized *. Some variation exists in the width of the 

 yellow margin of the hind wings : it is narrowest at the extreme limits of the range of 

 the species, i. e. in Central America and South Brazil, and becomes wider in the 

 intermediate country. M. Venezuela? resembles in many respects M. amra, but besides 

 being a smaller and more elongated insect, and possessing other minor distinctive 

 characters, it can at once be recognized by the crimson costal margin of the hind wings, 

 which in M. amra, and also in M. affinis, is yellow. 



This species appears to be quite rare in Eastern Mexico, but is common in the State 

 of Panama and thence southward throughout its range. Mr. Mathew found some 

 full-grown larvae of this insect in the island of Taboga, in the bay of Panama. He 

 says : — " The larva, which is soft and flabby to the touch, is clothed with fine straw- 



* Mr. Kirby places Papilio harcastus of Sepp as a synonym of P. acastus, Cramer, meaning no doubt the 

 species we now recognize as M. Venezuela;, and if tbis identification were correct, Sepp's name would have 

 priority; but, as already pointed out by Plotz (Stett. ent. Zeit. 1879, p. 535), P. harcastus applies to a species 

 in which the outer border of the secondaries beneath is wholly scarlet, and is an older title of P. verbena of 

 liutler. The same species is also figured by Clerck (Ic. Ins. t. 44). 



