454 HYMENOPTEKA. 



PAKASIEROLA. 



Parasierola, Cameron, Trans. Ent. Soc. Lond. 1883, p. 197. 



This genus agrees with Isobrachium in not having parapsidal furrows ; but differs 

 in having a complete upper discoidal cellule, the lower one being entirely absent. 

 There is a distinct prostigma, in which point it differs from JEpyris. Its nearest allies 

 are Sierola and Goniozus ; the former is readily known from Parasierola by the com- 

 plete radial cellule, the latter by the incomplete upper discoidal cellule. 



So far as at present known, the genus is confined to America. 



1. Parasierola lata, (Tab. XIX. fig. 21.) 



Nigra, nitida, capite sparse punctato, ore, trophi, tegulis, antennis pedibusque rufo-testaceis ; alis fuscis, basi 



fumatis, nervis fusco-testaceis, stigmate nigro. § . 

 Long. 5 millim. 



Hab. Panama, Bugaba (Champion). 



Antennae scarcely so long as the thorax ; the first joint enlarged, a little shorter than 

 joints 2-4 united ; the third joint double the length of the second and somewhat 

 longer than the fourth ; the intermediate joints are broader than long ; the thirteenth 

 is one half longer than the preceding. Head large, scarcely so wide as the thorax, 

 almost shining, covered with large scattered punctures ; transverse behind ; a narrow 

 keel runs down from the centre to the mouth ; eyes oblong, situated in the middle. 

 Thorax shining, impunctate, except the metanotum at the sides, the latter parts being 

 shagreened ; a deep, wide, transverse furrow at the base of the scutellum. Abdomen 

 as long as the thorax, becoming gradually narrowed to the apex ; the segments unequal. 

 Wings : the upper discoidal cellule is longer than broad ; the lower nervure straight ; 

 the upper nervure curved; the basal nervure is the larger. 



2. Parasierola opaca. (Tab. XIX. fig. 23.) 



Nigra, opaca, antennis, mandibulis pedibusque rufo-testaceis, femoribus posticis nigro-lineatis ; alis hyalinis, 



apice fere fumatis, nervis pallidis, stigmate fusco. 5 . 

 Long. 4 millim. 



Hah. Guatemala, Mirandilla 1700 feet {Champion). 



First joint of the antennas as long as the second and third joints united ; the second, 

 third, and fourth joints subequal. Head slightly broader than the mesothorax, opaque, 

 alutaceous, with scattered punctures; clypeus carinate; eyes oblong. Prothorax 

 broader than long, if anything shorter than the mesothorax, alutaceous, almost shining. 

 Scutellum more shining than the mesonotum ; its transverse furrow shallow, indistinct. 

 Metanotum opaque, shagreened; the centre raised into an elongated triangle; the apex 

 shining, semiperpendicular, not separated from the flat basal part. Abdomen longer 



