392 AMERICAN HYMENOPTERA. 



each of the succeeding dorsal segments, the apical segment is yellow, excepting 

 the blackish margins, the 2nd-5th ventral segments are margined with yellow 

 laterally and posteriorly, the apical ventral segment with a transverse band. 



Type. — University of Kansas. 



Type locality. — Thomas' Ranch, 20 miles southwest of Flagstaff, 

 Coconino Co., Arizona. 

 Collected by F, H. Snow. 



Odyiierns canaliculatus n. sp. (PI. XII). 



= Odynexus iturbidi Vier., Tr. Ks. Ac. Sci., xx ; Tr. Am. Ent. Soc, xxxii. 



Differs from iturbidi in the apical edge of the second dorsal seg- 

 ment being reflexed practically as in rectangulis. 



%. — 11 mm. — ifead.— Clypeus deeply emarginate, bidentate, yellow; hook of 

 antennse brown ; rest of the head black, excepting the triangular yellow supra- 

 clypeal mark, yellow to ferruginous mark in emargination of and back of eye 

 and ferruginous pedicel ; greater part of first flagellar joint ferruginous as is the 

 posterior aspect of the scape, its anterior aspect being yellow ; mandibles black at 

 base and apex, mostly brown. 



Thorax. — Metathorax with no dentiform angle on each side but rounded off; 

 pronotum tinted with yellow anteriorly; scutelli only partly ferruginous; mid- 

 dle segment not at all ferruginous; legs to basal third of femora inclusive black, 

 remainder mostly yellow, with part ferruginous. 



Abdomen. — First dorsal segment practically impunctate, its venter and anterior 

 face of dorsum black, as is a spear-shaped mark united with the black of the an- 

 terior aspect, the remainder of the segment ferruginous, with a yellow then 

 testaceous apical border, the second dorsal segment on the basal half partly like 

 the first and with an obtuse angled triangular black mark, which latter is 

 bounded posteriorly and laterally by ferruginous then by yellow, the yellow ex- 

 tending to the apex of the segment; channel very coarsely punctured and spi- 

 nose; second ventral segment not channeled, otherwise in color and pattern like 

 the corresponding dorsal segment; the rest of the abdomen mostly yellow and 

 punctured. Otherwise as in iturbidi, see Sauss., "Am. Wasps." 



Type — University of Kansas. 



Type locality. — Thomas' Ranch, 20 miles southwest of Flagstaff, 

 Coconino Co., Arizona. 



Collected in August, 1902, by F. H. Snow. 



Odyiierns (Stenodynerus) tempiferus n. sp. (PI. XII). 



Excepting the length of the thorax, this agrees in size and struc- 

 ture with Saussure's description of iturbidi, from which it is very 

 different in color and color pattern. 



Head. — Clypeus entirely yellow, a tribolate supraclypeal yellow mark, a yellow 

 mark, a yellow line along the eye margin extending from the clypeus to the 

 apex of the emargination of the eyes, the cheeks with a yellow line along the 

 eye margin, the scape in front and the mandibles almost entirely yellow, the 



