450 CATALOGUE OF 



angle on each side. Scutellum attenuated, acute, luteous at the tip aud 

 with a luteous callus on each basal angle. Pectus, under side of abdomen 

 and femora minutely speckled with black. Sternal keel slightly grooved, 

 extending from the hind coxae to the fore coxa?, notched for the reception 

 of the tip of the ventral spine. Legs tawny. Fore wings very thickly and 

 minutely punctured; membrane aeneous-cinereous. Length of the body 

 6 lines. 



This and the two following species differ somewhat in structure from 

 the typical form of the genus. 



a. Amazon Region. From Mr. Bates' collection. 



9. Brachvstethus marginifer. 



Piceus ; caput et thorax anticus sordide fulva; caput subtus testaceum ; 

 antenna testacece ; thorax Jlavescente pallida marginalus, angulis 

 posticis subobtusis ; pectus et venter nigricantia, disco fulva; pedes 

 julvi ; alee antica. suturatissime virides, costa pallide jlavescente, 

 membrana aneo-jusea. 



Piceous. Head and fore part of the thorax dingy tawny. Head 

 thickly and minutely punctured, testaceous beneath. Eyes reddish. 

 Rostrum and antenna? testaceous. Thorax and scutellum thickly and 

 minutely punctured. Thorax with a smooth incomplete somewhat tumid 

 band near the fore border; a pale yellowish rim along each side ; hind 

 angles slightly obtuse, not promiueut; hind border straight, rounded on 

 each side. Scutellum elongate-triangular, slightly acuie. Pectus and 

 under side of the abdomen lawny in the disk, blackish on each side. 

 Sternal keel like that of B. biguttatus. Legs lawny. Fore wings very 

 dark green, very thickly and minutely punctured ; costa pale yellowish ; 

 membrane aeneous-brown. Length of the body 6 lines. 



a. Amazon Region. From Mr. Bates' collection. 



-b' 



10. Braohystethus piceolus. 



Fuscus, subtus luteus, nigra conspersus ; caput et thorax anticus obscure 

 viridia ; antenna? lulescentes, basi nonnunquam picea ; thorax trans- 

 verse subrugulosus, jlavescente pallida marginatus ; scutellum attenu- 

 atum, subacutum ; pedes lutei, jemoribus nigra conspersis ; aUe 

 antica? costa basi pallide jlavescente, membrana azneo-cinerea. 



Brown, luteous beneath. Hind and fore part of the thorax dark 

 green. Head thickly and minutely punctured. Eyes piceous. Antennae 

 dull luteous; first joint sometimes piceous; third much longer than the 

 second, much shorter lhan the fourth; fifth as long as the fourth. Thorax 

 thickly, minutely and transversely rugulose, with a smooth band in front 

 and witli a pale yellowish rim on each side; hind angles rounded, not 

 prominent; hind border straight, rounded on each side. Scutellum 

 attenuated, slightly acute. Pectus, under side of abdomen and femora 

 thickly and minutely speckled with black. Sternal keel like that of the 

 preceding species. Legs luteous. Fore wings thickly and minutely 

 punctured ; costa pale yellowish at the base; membrane aeneous-cinereous. 

 Length of the body 5— b\ lines. 



a, b. Santarem. From Mr. Bates' collection. 



