CEEATINOPTEKA. — ANISOPYGIA. 49 



in medio incisa. — <3- Elytra paulo longiora lamina supra-analis transversa, integra. Lamina infra- 



genitalis subtransversa, margine arcuato, stylis 2 minimis fuscis. 

 $ . Long. 7*5 ; elytr. 5, pronot. 2, latit. pronot. 3 millim. 

 cJ . Long. 6-5 ; elytr. 5-6, pronot. 2, latit. pronot. 3 millim. 



Hab. Noeth Ameeica, Georgia, Louisiana. 



This species will probably be found in North Mexico.] 



PAKACERATINOPTEKA, Sauss. 



Paraceratinoptera, Saussure, Rev. et Mag. de Zool. 1868, p. 358; Miss. Scient. Mex., Orthopt. 

 p. 87. 



1. Paraceratinoptera nahua, Sauss. 



Paraceratinoptera nahua, Sauss. Rev. et Mag. de Zool. 1868, p. 357. 14 ( ? £); Miss. Scient. Mex., 

 Orthopt. p. 87. ], t. 1. fig. 30, t. 2. figg. 47, 47 e. 



Eab. Mexico (Saussure) ; Guatemala (coll. Bohrn). 



2. Paraceratinoptera dohrniana, sp. n. 



cj . Obscure testacea. Caput castaneum, ore et ocellis testaceis. Antennas fuscse, apice rufescentes. Prono- 

 tum fusco-castaneum, corneum, impressionibus nullis ; marginibus lateralibus deflexis, arcuatis ; margine 

 posteriore late transverso, subangulato ; disci prope basin maculis 2 marginibusque lateralibus angustissime 

 f ulvis. Elytra abdomen superantia, rufo-castanea, venis obsoletis, apice membranacea ac pallidiora. Alae 

 subhyalinse, venis testaceis, venulis costalibus 7-8 elongato-clavatis, brunneis ; vena ulnari tantum apice 

 breviter furcata vel biramosa. Pedes obscure testacei. Femora antica subtus margine anteriore spinulis 

 minimis piliformibus obsita, margine posteriore spina unica ; femora reliqua in utroque margine spinosa. 

 Abdomen testaceo-piceum. Lamina supra-analis trigonalis, leviter incisa. Cerci longiusculi, depressi, fusi- 

 form es. Lamina infra-genitalis stylis 2 crassis instructa. — A P. nahua differt elytris et alis longioribus, 

 sulco anali valde impresso. 



Long. 9 ; elytr. 9, pronot. 2*75, latit. pronot. 3*5 millim. 



Eab. Guatemala (coll. Dohm). 



ANISOPYGIA*, Sauss. (Tab. I. figg. 25, 26.) 

 Anisopygia, Saussure, Societas Entomologica, 1893, p. 57. 



c? . Habitus et formse generis Ceratinopterce. Antennas erassiusculse. Caput convexum, oculis valde remotis. 

 Pronotum corneum, anterius et posterius truncatum, utrinque deflexum. Elytra cornea, abbreviata. 

 Alae minutse. Segmentum dorsale ultimum valde sinuatum. Lamina supra-analis maxima, in partes 

 2 incequales fere usque ad basin divisa, dextra rotundata, sinistra angustior, apice hebetata. Cerci 

 mediocres, depressiusculi. Lamina infra-genitalis c? irregularis, stylis inaequalis instructa. — Feminas 

 ignotse. 



This remarkable genus may be known by the irregular anal segment, which has 

 the dorsal plate very deeply divided into two large irregular lobes. We unH a sort of 

 transition to that anomaly in some species of Blatta, in which the end of the lamina 

 supra-analis is notched in an irregular way, its angles forming two small unequal 

 processes arched one against the other (B. adspersicollis, Stal). 



* avuros, unlike ; wvyfi, buttock. 



biol. centk.-amer., Orthopt., October 1893. Hh 



