TAESOCTENUS. 



291 



Both Dr. Staudinger's type from Chiriqui and a specimen in Hewitson's collection 

 from the same source have a small white submarginal spot on the secondaries beneath 

 near the anal angle, which is not shown in our specimens ; but they present no other 

 difference. The species appears to be rare, as we have only seen a single specimen 

 from each of the localities mentioned above, with the exception of Chiriqui. 



The male genitalia have a simple tegumen terminating in a single blunt point ; the 

 scaphium is feebly developed ; the harpagones end in a blunt upturned point, near 

 which on the dorsal edge is a short lobe. (See Tab. LXXVI. fig. 12.) 



2 Tarsoctenus corytas. 



Papilio corytas, Cram. Pap. Ex. t. 100. f. C l . 



Papilio pyramus, Cram. Pap. Ex. t. 245. f. E 2 . 



Alis purpureo-nigris ad basin fulvis ; anticis fascia lata per cellulam trifida semihyalina macula elongata obliqtia, 

 infra earn puncto ad cellulae finem quoque semihyalinis ; posticarum ciliis albis : subtus chalybeo-nigns, 

 anticis maculis semibyalinis ut supra, posticis maculis ad basin runs, pectore quoque rufo ; capite supra 

 nigro albo maculato, palpis et genis albis. 



Hob. Panama, Chiriqui (Trotsch).— Guiana 12 ; Amazons Valley. 



A single specimen from Chiriqui in Dr. Staudinger's collection agrees accurately 

 with one in our own from Nauta in the Upper Amazons valley. The species was 

 described by Cramer from Surinam specimens 1 2 . Both of Cramer's figures quoted 

 above appear to represent the same insect, though they show a different number of 

 hyaline spots in the apical portion of the primaries. Our examples prove that this 

 is a somewhat variable character. 



b. Upper and under sides black, crossed with greeeish-blue bands. 



3. Tarsoctenus perissographus. (Tab. LXXVI. figg. 14, 15.) 



Ery tides perissographus, Mab. Le Nat. xi. p. 59. f. 2 (1889) . 



Alis nigris ; anticis ad basin et maculis quibusdam ad angulum analem et marginem externum viridi-cyaneis, 

 fasciis tribusseminyalinis, una tripartita per cellulam, una ultra earn bipartitaet tertia subapicah qmnque- 

 partita macula altera semibyalina ad medium marginis interni; posticis, linea caBruleo-albida margini 

 interno subparallela, fascia valde irregular! submarginali viridi-cyanea, ciliis albis nigro interrupts : 

 subtus ut supra, fasciis omnibus magis distinctis ; posticis macula altera ultra cellulam crerulea ; capite albo 

 punctato, palpis medialiter albis, abdomine glauco stria dorsali nigra et nigro cincto. 



Bab. Panama, Chiriqui {Bible, in mus. Staudinger x ), Volcan de Chiriqui, Bugaba 

 (Champion). — Amazons Valley. 



The type of this species, which has been kindly lent us by Dr. Staudinger, is a female, 



and all the specimens we possess are of that sex, so that we can only assign the species 



to this genus from its close resemblance to T. papias (Hew.), which certainly belongs 



here, though the peculiar structure of the hind tibiae and tarsi is not so fully shown 



as in the type of the genus, T. plutia (Hew.). 



2p2 



