THE CANADIAN ENTOMOLOGIST. 325 



Cerceris rhois, n. sp. — $ . Length, 12 mm.; length of anterior wing, 

 10 mm. Head closely punctured with Urge punctures; ocelli in a triangle, 

 distance between the lateral ocelli less than that to the nearest eye 

 margin ; carina between the antennas short, high, sharp ; third antennal 

 joint longer than fourth, first and third joint of about equal length ; 

 clypeus punctured as front, produced in the middle into a short, broad 

 tooth, which at the apex is dentate ; thorax, except enclosure, punctured 

 like head, mesonotum in middle with a shallow longitudinal furrow in 

 anterior middle ; enclosure strongly, slightly obliquely striated, middle 

 furrow distinct, on the lower part the stria? start from this furrow; posterior 

 tibiae on outer margin with six short teeth, from each tooth is a rather long 

 bristle; abdomen above with large, rather close punctures; venter shining, 

 not strongly punctured, first ventral segment rather finely striato-puncta^e ; 

 seventh dorsal segment parallel-sided, not quite twice as long as width at 

 apex, rather sparsely covered with large punctures, at apex truncate, a 

 small tooth at each apical corner. Colour black ; clypeus, mandibles 

 (apex piceous), face to a little above the antennae, two spots on pronotum, 

 postscutellum, broad band on second dorsal segment, a narrower one on 

 following dorsal ones narrowed in middle, narrow band on ventral 

 segments two, three and four, anterior trochanters and femora beneath, 

 middle and posterior coxas beneath, entire middle and posterior 

 trochanters, middle femora beneath, posterior femora for basal half, four 

 anterior tibiae and i3.Ts\, ye/Iow ] four basal joints of antennae, apical half 

 of middle femora above (the basal half above black), apical half of 

 posterior femora, posterior tibiae and tarsi, tegulae, reddish yellow ; wings 

 subhyaline, apex clouded ; venation reddish-yellow ; entire insect clothed 

 wiih brown or golden pubescence. 



Habitat.— ^\Q Ruidoso, White Mts., about 6.500 ft., N. M., July 21, 

 on flowers oi Rhus glabra (C. T. H. Townsend). 



In the striation of the enclosure this species is like C. compacta, 

 Cress., but the clypeus is different, also the pubescence. There are also 

 other differences. It has some resemblance to jnimica^ Cress, but. is 

 of a different colour, the venter is maculated, etc. 



Cerceris cleomcs, n. sp. — ^. Length, about 5 mm. Head with 

 large close punctures ; distance between the lateral ocelli about equal to 

 the distance to the nearest eye margin; carina between the antennae rather 

 strong ; first antennal joint longer than third, third and fourth equal ; 

 clypeus punctured like front, rather pointed in middle of rounded anterior 



