HEMIPTERA HETEROPTERA. 135 
17. ProstEMMA NIGRICANS. 
Fem. Nigra, longi-subfusiformis ; caput longi-conicum, prothoracis 
lobo antico paullo longius ; oculi valde prominuli; antenne gracil- 
lime ; pedes fulvi; femora antica crassa ; ale antice picce. 
Female. Black, elongate-subfusiform. Head elongate-conical, a little 
longer than the fore lobe of the prothorax ; ante-ocular part more than 
twice as lung as the post-ocular, which is very short. Eyes very prominent. 
Antenne very slender, much longer than the head and the prothorax 
together; first joint a little longer than the ante-ocular head ; second about 
twice as long as the first; third as long as the second; fourth about twice 
as long as the third. Fore lobe of the prothorax a little more than twice 
as long as the hind lobe. Legs tawny; fore femora incrassated. Fore 
wings piceous. Length of the body 3} lines. 
a, Amazon Region. From Mr. Bates’ collection. 
18. PROSTEMMA LUTEICEPS. 
Fem. Viridescente-nigra ; caput luteum, longi-conicum, prothoracis lobo 
antico paullo longius ; antenne picea, capile et prothorace ad unum 
longiores, articulo lo luteo ; prothoracis lobus anticus margine antico 
strigaque lanceolata luteis; scutellum luteum, fusco bipunctatum ; 
pedes lutei ; corium lineis nonnullis liturisque exterioribus luteis. 
Female. Greenish black, smooth, shining, fusiform. Head luteous, 
elongate-conical, with a well-developed neck, a little longer than the fore 
lobe of the prothorax ; ante-ocular part full twice as long as the post-ocular. 
Antenne piceous, somewhat longer than the head and the prothorax 
together; first joint luteous, a little shorter than the ante-ocular part of the 
head; second more than twice as long as the first; third shorter than the 
second; fourth shorter than the third. Fore Jube of the prothorax a little 
less than twice as long as the hind lobe, lutevus on the fore border and 
with a luteous lanceolate streak from thence to the disk. Scutellum luteous, 
with a brown point on each side of the disk. Legs luteous. Corium with 
some lutevous lines and with some exterior minute luteous marks, Mem- 
brane blackish. Length of the body 3} lines. 
a. South America. Presented by E. Doubleday, Esq. 
b. Tapayos. From Mr. Bates’ collection. 
19. PrRosTEMMA RUFICEPS. 
Fem. Nigra, nilens, setosa; caput prothoracis margo anticus, scutellum 
et ventris latera basi pedesque rufa; caput longi-conicum, prothoracis 
lobo antico aquilongum, articulo lo rufo; femora antica subtus nigro 
strigata ; membrana basi plagaque discali rufis. 
Female. Black, slender, smooth, shining, setose. Head, rostrum, 
fore border of the prothorax, scutellum, propectus, abdomen beneath at the 
tip and on each side of the base and legs red. Head elongate-conical, as 
