CLASSIFICATION OE THE ASCALAPUIDiE. 



235 



Pebas on the Upper Amazons and Parana in South Brazil, with- 

 out differences that seem to be specific According to informa- 

 tion kindly furnished by Dr. Hagen, who possesses the type, 

 this is certainly Burmeister's species. 



2. H. flavicornis (De Selys, in litt.), n. sp. Antennae alarum di- 

 midio vix longiores, omnino flavse. Thorax abdomenque fusca, ille 

 infra albidus. Pedes pallide flavi ; tarsis fuscescentibus. Alae latae, 

 fere vitreae, ad apiceni obtusae ; area costali subcostalique infuscatis ; 

 pterostigmate pallide infuscato, nigro-venato ; anticarum margine in- 

 ter] ore ante basin leviter exciso, angulo axillari in dentem triangu- 

 larem producto (alae hoc modo appendiculatae) ( $ ). Long. corp. 

 12"'; exp. alar, antic. 44 /,/ , postic. 39"'. 



Hab. Cuernavaca, Mexico. In the collection of Baron de Selys Long- 

 champs. 



This fine species differs from all others in the appendiculate 

 anterior wings, though otherwise it is allied to costatus and other 

 neighbouring forms. 



3. H. microcerus, Rambur. (Byas microcerus, Ramb. Nevrop. p. 362.) 

 Hab. Antilles. 



Unknown to me. I have seen no species that appears abso- 

 lutely to accord with Bambur's description. 



4. H. terminalis, nov. sp. Antennae alarum dimidio aequales, vel 

 vix breviores, testaceae ; clava obscuriore. Frons vertexque fusco- 

 villosi. Thorax griseo-fuseus, indistincte flavido varius, infra sparse 

 cano-pilosus ; S prothoracis valvula paullo producta, auriformi, mar- 

 gine libero fere semiovato. Pedes sordide flavidi; tarsis nigris. 

 Abdomen fuscum. Alae angustatae, ad apicem subacutae, vitreae ; 

 margine costali anticarum (area costali subcostalique), apicibusque 

 omnium late venuste brunneis ; venis venulisque brunneis ; ptero- 

 stigmate magno, albido, pallide venato ; margine interiore anticarum 

 ante basin regulariter convexo, angulo axillari fere obsoleto. Long, 

 corp. 19"'; exp. alar, antic. 38"', postic. 35"'. 



Hab. Tapajos (Bates). In the British and Oxford Museums. 

 A pretty species, remarkable for its narrow wings, the apices 

 of which are broadly brown in both sexes. 



5. H. leu co stigma, Walker. (Ascal. leucostigma, Walk. Trans. 

 Ent. Soc. Lond, ser. 2, vol. v. p. 195.) Antennae alarum dimidio 

 breviores, rufo-fuscae; clava obscuriore. Frons vertexque fusco-pi- 

 losi. Thorax griseo-fuscus, vix flavo-varius. Pedes griseo-flavi ; fe- 

 moribus tibiisque supra fuscescentibus ; tarsis nigris, articulo ultimo 

 ad apicem rufo-testaceo. Abdomen griseo-fuscum. Alae latae, ad 

 apicem subobtusae, vitreae ; margine antico anticarum (area costali 



LINN. JOURN. ZOOLOGY, VOL. XI. 17 



