SINEA. 291 
SINEA. 
Sinea, Amyot et Serville, Hist. Nat. Ins. Hémipt. p. 375 (1843) (part.); Stal, Stett. ent. Zeit. 
1861, p. 187; Hemipt. Afr. i. p. 47; Enum. Hemipt. ii. pp. 67, 70. 
A well-marked American genus easily distinguishable by the strongly raptorial front 
legs, the anterior femora and tibie being each armed with a double series of long 
spines, and the anterior femora having also a long spine near the apex above. Its 
head-quarters are within our limits, whence seven species are now recorded. They are 
extremely closely allied and difficult to separate, unless specimens of both sexes are 
available for examination, several of them having a very differently shaped abdomen 
in the males. Of the six species described by Stal, four were based upon females only. 
Fortunately, we are now enabled to make good this deficiency and to characterize both 
sexes of all the Central-American forms. ‘The three or four North-American species 
stand greatly in need of revision. It may be noted that in most of the Sinee the 
form of the lateral angles of the pronotum is variable and the spines on the head 
vary in length. 
The Central-American forms may be thus separated :-— 
a. Posterior lobe of the pronotum distinctly bigibbous on the disc ; anterior 
lobe spinose or with pointed tubercles. 
a’, Abdomen narrow in the ¢, broad and with the margms undulated in 
the 9: body moderately elongate . . . ... . . . . undulata, Uhler. 
6’. Abdomen in both sexes abruptly widened posteriorly, in the 3 narrow 
to beyond the middle and caudate at the apex: body very elongate . coronata, Stal. 
b. Posterior lobe of the pronotum simply transversely convex on the disc : 
body moderately elongate. 
c’, Abdomen narrow in the &, widened to the apex of the fourth segment 
in the ?; head with the third spine of the ante-ocular series very 
elongate. 
a’, Abdomen subcaudate, and with the apex emarginate, in the 3g; 
anterior lobe of the pronotum with prominent pomted tubercles . cawdata, n. sp. 
ob”, Abdomen not caudate, and subtruncate at the apex, in the ¢; 
anterior lobe of the pronotum with very short conical tubercles . raptoria, Stal. 
d’, Abdomen in both sexes widening to the apex of the fourth segment, 
but narrower in the ¢ than in the ?. 
c’, Anterior and posterior lobes of the pronotum spinose; head with 
the third spine of the ante-ocular series elongate . . . integra, Stal. 
d’’, Anterior lobe of the pronotum tuberculate, the posterior lobe 
unarmed on the disc. 
a’, Head with the third spine of the ante-ocular series very elongate, 
much longer than the others . . . see we ee  6SANguisuga, Stal. 
b’’’, Head with the third spine of the ante- ocular series not longer 
than the others, the anterior one usually the longest . . . . defecta, Stal. 
37* 
