HEMIPTERA HETEROPTERA. 
135 
17 . Prostem m a nigricaxs. 
Foem. Nigra, longi-subfusiformis ; caput longi-conicum, prothoracis 
lobo antico puullo iongius ; oculi valde prominuli ; antennce gracil- 
liirue ; pedes fulvi ; femora antica crassa ; aloe anlicce picece. 
Female. Black, elongate-subfusiform. Head elongate-conical, a little 
longer than the fore lobe of the proihorax ; ante-ocular part more than 
twice as lung as the post-ocular, which is very short. Eyes very prominent. 
Antennae 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 loug 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 31 lines. 
a. Amazon Region. From Mr. Bates’ collection. 
18 . Prostemma luteiceps. 
Foem. Viridescente -nigra ; caput luteum, longi-conicum, prothoracis lobo 
antico paullo Iongius ; antennce picece, capile el prothorace ad unum 
longiores, articulo 1 o luteo ; prothoracis lobus anticus margine antico 
strigaque lanceolata luleis ; scutellum luteum, fusco bipunclatum ; 
pedes lutei ; corium lineis nonnullis liturisque exlerioribus luleis. 
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. 
Antennae 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 lobe of the proihorax a little 
less than twice as long as the hind lobe, luteous 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 luteous lines and with some exterior minute luteous marks. Mem- 
brane blackish. Length of the body lines. 
a. South America. Presented by E. Doubleday, Esq. 
b. Tapayos. From Mr. Bates’ collection. 
19 . Prostemma ruficeps. 
Foem. Nigra, nitens , setosa ; caput prothoracis margo anticus, scutellum 
et ventris latera basi pedesque rufa ; caput longi-conicum, prothoracis 
lobo antico cequilongum, articulo io rufo ; femora antica subtus nigro 
strigala ; membrana basi plagaque discali rvfis. 
Female. Black, slender, smooth, shining, setose. Head, rostrum, 
fore border of the proihorax, scutellum, propectus, abdomen beneath at the 
tip and on each side of the base and legs red. Head elongate-couical, as 
