Mr. W. L. Distant on Pentatomicla\ 353 



passing al)dominal apex, the venation longitudinal, Avitli a 

 distinct transverse cell at base ; rostrum reaching the poste- 

 rior coxae, first joint almost reaching base of head, second 

 passing anterior coxje, third not quite reaching intermediate 

 coxpe ; sternum centrally, finely, longitudinally carinate, 

 becoming considerably prominent on the metasternum ; 

 abdomen only moderately convex, spiracles on basal segment 

 exposed, distinctly visible, central base slightly roundly pro- 

 duced, but not reaching posterior coxte, apical angles of 

 sixth segment (in (^ ) distinctly produced, apical angles of 

 anal segment strongly, broadly, angularly produced, central 

 apical margin of sixth segment truncate ; tarsi three-jointed. 

 By the elongate scutellum this genus should represent a 

 new division among the first four enumerated by Horvath 

 (llJOO) in his table of divisions in the Tessaratominae ; it is 

 the third genus of the subfamily at present recorded from 

 the Neotropical Region. 



Janeirona insiynis, sp. n. 



Black ft spot at lateral angles of pronotum, a transverse 

 spot at base and a small discal spot beyond middle of corium, 

 legs and rostrum ochraceous ; basal longitudinal disk of 

 abdomen beneath testaceous; antennae distinctly palely 

 pilose; head more or less transversely Avrinkled ; ocelli 

 sanguineous ; pronotum and scutellum somewhat thickly 

 finely punctate, the latter with two obscure central longi- 

 tudinal raised lines on the apical area ; corium thickly finely 

 punctate ; all the ochraceous spots impunctatc ; body beneath 

 more or less thickly finely punctate; tarsi pale ochraceous, 

 longly pilose ; other structural characters as in generic 

 diagnosis. 



Long., ^ , 19 ram. ; exp. pronot, angl. 8 mm. 



Hab. Fifty miles west of Rio Janeiro, 1000-1200 feet {Sir 

 JFm. Smilh, Brit. Mus.). 



Genus Megymexum. 

 3Jef/i/meiuiinj Laporte, Ess. H^ni. p. 52 (1832). 

 Type, M. dentatinn, Boisd. 



Megymcniim prniti, sp, n. 



Fuscous brown, more or less palely pilose ; membrane pale 

 ochraceous ; head above concave, before eyes Avith a some- 

 what longly acute lateral spine directed both a little up- 

 wardly and backwardly ; antennae fuscous brown, the apical 



