PYTHONIDES. 359 



glaucescentibus transversis, una per cellulam altera diseali : subtus fuscis ; anticis medialiter pallidioribus, 

 punctis irregularibus apud marginem externum, maculis reliquis sicut in pagina superiore ; posticis plus 

 quam dimidio basali nitide eaeruleo, margine externo late fusco, squaniis quibusdam glaucis apud angulum 

 analem. 

 $ mari similis, sed aliis anticis magis abbreviatis. 



Eab. Mexico, Mazatlan (Forrer), Cordova (Bumeli), Paso de San Juan (TV. Schaus), 

 Atoyac, Teapa (E. E. Smith) ; Guatemala, Polochic Valley (F. I). G. & 0. S.), Panzos, 

 Cahabon, Zapote (Champion); Nicaeagua, Chontales (Belt, Janson) ; Panama, Volcan 

 de Chiriqui, Bugaba (Champion), Chiriqui (Trotsch, in mus. Staudinger), Calobre (Arce). 

 — South America generally from Colombia to Paraguay and South Brazil. 



P. cerialis is one of the commonest and most widely ranging species of the genus, 

 extending from the hotter low-lying districts of Mexico, over the whole of tropical 

 America to Southern Paraguay. We have a large series of specimens from various 

 points of this wide area, showing no tangible differences. The hind tibiee have two 

 pairs of spurs, but no tibial tuft of hairs. 



The male genitalia have a simple tegumen ending in a slightly depressed single rod ; 

 the scaphium hangs close to the under surface of the tegumen : the harpes have a very 

 sinuous dorsal edge, forming a lobe directed outwards near the middle ; the end of each 

 harpe is a tapering simple lobe with a blunt rounded end. (See Tab. LXXXII. fig. 2.) 



2. Pythonides contubernalis. (Tab. LXXXII. figg. 3, 4, 5 6 .) 



Pythonides contubernalis, Mab. Bull. Soc. Ent. Belg. xxvii. p. lxxvi (1883) \ 

 Pythonides praxis, Plotz, Jahrb. Nass. Ver. xxxvii. p. 7 (1884) 2 ? 



P. ceriali similis, sed anticis maculis omnibus semibyalinis minoribus, fascia submarginali interrupta, omnino 

 laete cserulea ; posticis fasciis duabus transversis laete eaeruleis, fascia quoque maculosa ad marginem ex- 

 ternum ejusdem coloris : subtus posticis colore eaeruleo multo magis extenso ad marginem externum 

 extendente, angulo apicali et linea submarginali indecisa tantum nigricanti-fuscis. 



2 mari similis, fasciis posticarum minus vivide eaeruleis. 



Eab. Guatemala, Polochic Valley (F. I). G. & 0. S.), Panima (Champion) ; Panama, 

 Bugaba (Champion), Chiriqui (Trotsch, in mus. Staudinger), Lion Hill (M'Leannan). — 

 Amazons Valley ; Guiana 1 2 ; Beazil 1 . 



A male specimen from Chiriqui, named by M. Mabille and kindly lent us by 

 Dr. Staudinger, enables us to determine this species with certainty. It is nearly allied 

 to P. cerialis, but may be readily recognized by the smaller spots on the primaries and 

 by the two conspicuous blue bands on the secondaries. These differences are confirmed 

 by the male genitalia of the two species. The hind tibiae have two pairs of spurs, but 

 no tibial tuft of hairs. 



P. contubernalis was described by M. Mabille x from specimens in his own collection 

 from Guiana and Brazil. We have a good series from Bugaba and Panama, a few 

 from Guatemala, and one from the Amazons Valley from near the mouth of the Bio 

 Napo. 



