10G 



HYMENOPTERA OF AMERICA. [PART I 



This division is more distinct than the preceding, but, never- 

 theless it joins itself to Division Alpha by the E. Wagnerianus 

 and flavicornis. 



4«». E. abdominalis Dbuby.— Validus, gracilis; corpora velutino; 

 clypeo apice parum euiarginato, deutibus rotun.latis; petiolo .leplanato, 

 buIco partito; alis ferrugineis ; antennis ferrugineis, apice supra nigris. 

 (Colorum distiibutio inasdme variat in hoc insecto, a corpoie omnino 

 ferrngineo, ad uigro- et flavo-variegatum ; varietas maxiine abhorrens 

 videtur esse thorace nigro, pronoto <-t scutellis flavis. Ssepius petiolus 

 uiger perinanet, margine flavo, et abdomine ferrugineo.) $> % . 

 Total length, 21 mm. ; wing, 17 mm. 



Sphex abdominalis Dboby, Illust. of Ins. I, tab. 45, fig. 2 (1770). 



Vespa attenuata Oliv. Encyc. Metk. VI, u74 (1791).— Fabb. Ent. Syst. 



II. 2-12. 



ensa Christ, Hymen, ibid, XXXII. fig. 7. 

 Polistes attenuates Fabr. S. 1'. 27'.' (1804). 

 Eumenes abdominalis Satss. Ve-pid^s, I, 70, 58, et in La Sagra, Hist, de 



Cuba Ins. 768.— Cbessos, Hymen, of Cuba, Proc. Ent. Hoc. Philad. 



IV, 1865, 157. 

 Eumenes colona Sacs*. Vespides, I, 70, 59 (1852), et in La Sagra, Hist, de 



Cuba Ins. 7G8, pi. 19, fig. 1. 

 Eumenes versicolor Su'ss. ibid. I, 71, 60. 

 Eumenes ornatus Sauss. Vespi.les, III, 147, 35, pi. viii, fig. 3 (1S54), et 



in La Sagra Hist, de Cuba Ins. 70S. 

 Eumenes picta Smith, Catal. Brit. Mas. Vespidse, 32, 79 (1857). 



9 % . Large. Mandibles forming a long beak by their union, 

 presenting two lines of punctures. Clypeus a little emarginate 

 at its extremity; the notch placed between two rounded projec- 

 tions. Head and thorax punctured, velvety. The angles of pro- 

 thorax a little salient. Petiole arcuate, shining; of the length 

 cf the thorax; divided by a groove. The remainder of the 

 abdomen pyriform, almost fusiform, subvelvety, or even silky. 

 The body clothed with a gray pile. 



Antennae ferruginous, with the extremity of the scape of S 

 ornamented with a yellow line. Mandibles ferraginons. Wings 

 transparent, of a yellow ferruginous along the side. Nothing is 

 more variable than the distribution of the colors on the remainder 

 of the body. 



One can arrange the following principal varieties: — 



a. Color in the main black ; a frontal spot, border of the orbits, 

 an interrupted transverse line before the ocelli and clypeus, yellow; 

 this lasl marked with a black spot at its summit. Prothorax, a 



