AMERICAN HYMENOPTERA. 213 



A. ormsbyensis Cam., A. gwinistonejisis and ^1. trichionotus Cam. 

 agree with this group, except that the second abdominal segment 

 has no yellow spot, and that the body is more densely haired. 



Odynern.s aiiorinis Say sec. Sauss. 

 What may be this species is represented by two males. They agree 

 fairly well with the descriptions, but differ or show variation in the 

 coloration, e. g. one has the two yellow spots on the second ventral 

 segment, shown in Saussure's figure (PI. XIV, f. 1). They are 

 only 7 mm., while Saussure gives 11 mm. as the length of anormis ; 

 that length, however, probably refers to the 9 • In 'i specimen from 

 Colorado the yellow lateral line on the metanotum is much broader, 

 longer and more distinct than it is on one from Texas (Fedor). The 

 top of the first abdominal segment is rougher than it is in Odynerus 

 proper. 



The group of fulvipes Cress. 



The first abdominal segment with a free oblique lateral spot; the 

 second with a free spot ; the legs for the greater part fulvous. 



Differs from the fundatu.s section in the spot on the basal abdomi- 

 nal segment being elongated and not joined to the apical line. 



0<lyuei'us auisttriiiiis Cress. 

 Taken in Lee Co., Texas, in June. 

 To this group may be referred arizonensis Cam. 



t'-''^dyneriis (Ancistrocerus) fulvipes Cress. 



Black ; a curved line on the top of the clyi>eus, a small irregular mark over the 

 autennije, one of the same size in the eye incision, a triangular mark on the base 

 of the mandibles, a short line behind the eyes, underside of autennal scape, if 

 small spot behind the tegulae, a larger one, longer than broad, in the centre of the 

 mesonotum at the apex, postscutellum, a broad line on the apical two-thirds of 

 the sides of metanotum, an irregularly oval mark on the ])leur8e below; above, 

 the centre and apex with the punctures larger and confluent ; the apex depressed, 

 transverse. Front and vertex closely and strongly punctured. Thorax strongly 

 punctured ; the base transverse, the edges sliglitly projecting. Apex of postscu- 

 tellum broadly rounded. Sides of median segment with a distinct margin ; the 

 lower edge stoutly bidentate. First abdominal segment longer than it is wide at 

 the apex, which is very slightly reflexed ; the second segment is clearly longer 

 than it is wide at the apex; its apex is more distinctly reflexed. The band on 

 the second segment does not extend all round below. 



The male has the clypeus yellow; its apex depressed and transverse in the 

 middle, the sides projecting into stout teeth; the sides of the metanotum want 

 the yellow lines and the apices of the first and second abdominal segments are 

 more strongly reflexed. The terminal anlennal hook is narrow, black and ex- 



TRANS. AM. ENT. SOC, XXXIV. JULY, 1908. 



