456 CATALOGUE OF 



angle on each side. Sciilellum attenuaieil, acute, Uiteous at the tip and 

 with a luleous callus on each basal an^le. Pectus, under side of abdomen 

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

 extending from the hind coxae to the fore coxff, notched for the reception 

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

 minutely puncluied; membrane a;neous-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. Beach YSTETHUS makginifbr. 



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

 antennie lestacece ; thorax Jlavescente pallida martjinatus, anguiis 

 posticis suboblusis ; pectus et venter nigricanlia, disco fulva ; pedes 

 fulvi; alee anticce saturatissime virides, casta pallide Jlavescente, 

 membrana aneo-fusca. 



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

 thickly and minutely punctured, testaceous beneath. Eyes reddish. 

 Rostrum and antennae 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 prominent; hind border straight, rounded on 

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

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

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

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

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



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



10. Brachystethus piceolus. 



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

 viridia ; antennce lutescentes, basi nonnunquam piceie ; thorax trans- 

 verse subrugulosus, Jlavescente pallida marginatus ; scutellum attenu- 

 atum, subacvtum ; pedes lulei, femoribus nigra conspersis ; aloe 

 anticce costa basi pallide Jlavescente, membrana eeneo-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 than the fourth; fifth as long as the fourth. 'J'horax 

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

 and with 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 ^ueous-cinereous. 

 Length of the body 5 — 5^ lines. 



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



