272 AMERICAN HYMENOPTERA. 



104. Incisions between segments 1-3 very deep ; clypeus much impressed from 



sides on front edge "•■■Phagesorus Foer. 



Incisions not deep ; clypeus without lateral impressions 105. 



105. Mesonotuni, scutelluni and segments 1-3 not shagreened. 



• Sarcorychus Foer. 

 Mesonotum, scutellum and segments 1-3 shagreened 106. 



106. Kidge of vertex broken in middle •■■ApyNtiiS Foer. 



Kidge of vertex not broken in middle 107. 



107. No lateral carina from spiracles to apex on basal abdominal segment. 



'Dolioctoiitis Foer. 

 Lateral carina from spiracles to apex present 108. 



108. Metanotum without carina ; antennte with pale auuulus. 



"Barytarbes Foer. 

 Metanotum with more or less distinct carinte 109. 



109. Basal segment of hind tarsi inflated ; tibial spur not half as long. 



Holmgren ia Foer. 

 Basal segment of hind tarsi not inflated 110. 



110. Mesonotum not shagreened f-^ I^i*llii**>l*Ii^SUS Foer. 



Mesonotum finely and opaquely shagreened 111. 



111. Clypeus with lateral transverse impressions more or less distinct and the 



front edge has a more or less distinct elevated margin. 



t ''Cam potior us Foer. 



Clypeus more or less transversely impressed at sides of anterior margin, and 



the margin by this means is elevated and centrally more or less deeply 



emargiuate Me»iOieius Holnig. 



OTOBL.ASTIIS Foerster. 

 (Synopsis der Fam. und Gatt. der Ichneumonen, 1868.) 



Small, slender species, with the abdomen more or less compressed 

 in the ? beyond the second segment ; basal segment broadly sessile, 

 depressed, subrectangular, the basal portion broadened, ear-like 

 laterally. Head small, transver.se, slightly narrowed beneath, tuber- 

 culate beneath antennse ; clypeus small, apically impre.ssed, and with 

 median apical emargination. Thorax polislied, parapsidal grooves 

 wanting; metathorax oval, rugose, transverse carinse wanting. Ab- 

 domen rugosely punctate at base and witiiout distinct dorsal carinse. 

 Legs strong, coxte short. Wings elongate, areolet wanting, stigma 

 triangular, marginal cell strongly triangulate. The following species 

 of this genus bear a close resemblance to the Bassini, lacking only 

 the tridentate mandibles. 



Abdomen black ; sternum and most of scutellum yellow bideiis n. sp. 



Abdomen partly rufous. 



Face and median spot and lateral margins of mesonotum yellow. 



Hind coxae and most of abdomen rufous compressi veiitrJs Cress. 



Hind coxse yellow; abdomen piceous, third segment rufous. 



miniiuus Cress. 



