ODXNJSRUS. 313 



species of both series. Thus 0. vagus seems nearly of a form 

 with A. fulvipes, in which the suture of the first abd. segment 

 should disappear. 



A. lletathorax slightly prolonged under the post-scutel beyond 

 it, being truncate before; 1 its concavity margined ivith 

 sharp edges, nearly angulale on each side. 



a. Abdomen slender, cylindrical ; first segment as wide as the second. Body 



velvety. 



11«5. O. Enyo — Gracilis, elongatus et angustus, ommino velutinns ; 

 clypeo 9 piriformi, punctato, apice biangulato ; capite et thorace grosse 

 cribratis ; pronoto biangulato ; metanoto granuloso, pone post-scutelluua 

 foveolato-truncato ; ejus foveola rotundata marginibus areuatis, hebet 

 atis punctatisque circurndata ; eanthis inferis utrinque dente duplice 

 instructis ; abdomine valde elongato, aDgusto ; dense punctato et velu- 

 tino ; primo segmento magno, elongato, basi truncato, supra fere pariter 

 longo quam lato, grosse cribrato et in longitudinem per canaliculus 

 ob-oletuuu partito. — Niger ; ore, capite abdominisque seguieutis 3— 1>, 

 obscure ferrngineis : clypeo, tborace et abd. secundo sejuiento nigris; 

 tegulis, post-scutello, inetauoto, abdominis primo segmento et pedibus, 

 aurantiis ;autennis aurantiis ; basi ferrugineis ; alis flavis, parte apicali 

 nigra. Longit. 12 mm. 



%. Minor; metanoti eanthis paulo distinctioribus macula frontali et 

 clypeo, flavis ; hoc anguste polygonali, bidentato ; antennis uncinatis, 

 aurantiis. 



Odyn. Enyo Lep. St. Faeg. Hymen. II, 648, 33 (1841).— Saups. Et. 



Vespid. I, 185, 81. — Sagra's Hist, de Cuba, Ins. 770. — Ckesson, 



Philad. Entoro. Proceed. IV, 1865, 165. 

 Odyn. elegans Gder. Icon. Regu. Anim. Ins. 446, pi. 72, fig. 5 (1842). 



Hab. Cuba. 



B. Metathorax scarcely, or not distinctly produced under 

 the piost-scutel , beyond it. 



a. Abdomen elongate, cylindrical, with the 1st segment as toide as the 2d, 

 elongate; or ovoid-elongate with the 1st segment a little narrower, rounded. 



* The 1st and 2d abdominal segments each adorned with two yellow spots, or fascia; 

 beside their marginal fascia. 



(Observation. — These spots are often wanting, particularly in 0. toltecus.) 



1 This type finds in the Stenancistrocerus its corresponding type in 

 Stenanc. histrio. 



