FAM. MEMBRACID^ 77 



The tegmina are largely covered by the sides of the pronotum ; the humeral angles are extended into 

 short spines; the dorsum is nodulate and shows a strong median carina; the tegmina are hyaline with 

 four apical cells ; and the tibiae are slightly dilated at the extremities. 



Type nodosa Burmeister. 



Geographical distribution : Only two species are known, both from South America. 



1. insolitus Goding, Trans. Amer. Ent. Soc. LII : 106 (1926). Ecuador. 



2. nodosa Burmeister, Handb. Ent. II : 148. i (i835). Brazil. 



35. Genus ASPONA Stal 



Aspona Stal, Rio Jan. Hem. II : 29 (i858). 



Characters : The species of this genus are rather peculiar in appearance because of their 

 broad forms and the scabrous and deeply indented surface of the pronotum. The head is triangular 

 and somewhat produced. The pronotum is rough and swolien but without nodules or spines. The 

 humeral angles are auriculate and strongly produced. The posterior process is constricted just behind 

 the humeral angles, then much swollen, much wider than the abdomen and strongly convex, then sud- 

 denly narrowed to an acute apex which reaches to the tips of the tegmina. The tegmina are hyaline and 

 are more than half covered by the oveihanging sides of the swolien pronotum. The longitudinal veins of 

 the costal area are very close together. The corium shows five elongate apical cells and one or two 

 discoidal cells. Stal assigns only one discoidal cell to his type species but this character has been 

 found to be variable. The tegmina are about half as long again as the wings. The legs are simple and 

 all of the tarsi about equal in length. 



Type bullata Stal. 



Geographical distribution : The genus is found in South and Central America and in Mexico 

 with the known species distributed as follows : 



1. asfyera Walker, List Hom. B. M. Suppl. i5i (i858). Argentina. 



2. bullata Stal, Rio Jan. Hem. II : 29. i (i858). Brazil. 



3. cuneata Fowler, B. C. A. II : 5i. 3 (1894). Panama. 



4. intermedia Fowler, B. C. A. II : 5i. 2 (1894). Panama. 



5. turgesceiis Fowler, B. C. A. II : 5o. i (1894). Pl. 3, fig. 30. Mexico, Guatemala. 



36. Genus HYPHEUS Stal 



Hypheus Stal, Bid. Hem. Syst. 55^ (1867). 



Characters : This genus was erected for theaccommodation of Fairmaire's species urstts on the 

 characters of the pronotum which include a dorsal hump at the base of the posterior process and 

 flattened sides which almost completely cover the tegmina. The head is straight, vertical, triangular, 

 rounded at the base and with the ocelli much nearer to each other than to the eyes. The pronotum 

 is smooth, punctate, with a strong dorsal swelling at the base of the posterior process, rounded 

 humeral angles, a distinct transverse depression just behind the humeral angles but with no horns or 

 spines. The sides of the pronotum almost completely cover the tegmina, and the posterior process 

 which is heavy, tectiform and sharp, extends just to the tips of the tegmina. The tegmina are hyaline 



