TEXAN HYMENOPTEItA. 235 



apical margin of the segments flat, not at all refiexed ; venter yellow, ferru- 

 ginous at base, sometimes the third segment has a broad black band at base. 

 Length .60 inch. 



£.— Color pale yellow-ferruginous, much paler than 9; clypeus entirely 

 pale yellow; mandibles yellowish outside, as will as scape beneath ; two api- 

 cal joints of antennae small, ferruginous, the terminal one acute; upper an- 

 terior margin of prothorax narrowly yellow; mesothorax ferruginous, black on 

 anterior and posterior margins; tibia? and tarsi pale yellow; wings yellowish- 

 fuscous; color of abdomen much paler than in 9 > the apical yellow band on 

 first segment not dilated laterally, sixth and seventh segments pale ferrugi- 

 nous. Length .55 inch. 



Four £ 9 specimens. (Belfrage.) Has much the general ap- 

 pearance of Rhygchium dorsale, and in color resembles several of the 

 following species, but may be distinguished at once by the second seg- 

 ment (as well as first) except apex being smooth and iinpunctured. 

 Odynerus evectus, n. sp. 



9 • — Head ferruginous, coarsely and irregularly punctured, cheeks and 

 clypeus sometimes yellowish-ferruginous, emargination of eyes, broad triangu- 

 lar spot above base of antennas, and upper margin of clypeus yellow; clypeus 

 broad, sparsely punctured apex narrowly truncate ; antennae black, two basal 

 joints ferruginous; thorax coarsely, confluently punctured ; prothorax ferru- 

 ginous, with a broad yellow band anteriorly; mesothorax ferruginous, more or 

 less black on anterior middle ; scutellum ferruginous, sometimes with a yellow 

 dot on each side; postscutellum yellow; metathorax broadly concave behind, 

 blackish, lateral angles broadly yellow, posterior face shining, sparsely punc- 

 tured above, obliquely striated beneath; pleura black, with a partly ferrugi- 

 nous and partly yellow spot beneath tegulse; tegulse yellowish, pupilled with 

 ferruginous; wings yellowish-fuscous, darker on costa; legs ferruginous, spot 

 on intermediate coxa? and tips of their femora beneath, yellow; abdomen 

 short, stout, more or less strongly sericeous; first segment as broad as second, 

 smooth and rounded at base, iinpunctured, ferruginous, black on basal middle 

 and on disk, a yellow band on apical margin suddenly dilated into a spot on 

 each side; second segment stronglv rather coarsely punctured, black, with a 

 more or less distinct ferruginous spot on each side, apex depressed, coarsely 

 and deeply punctured before apical margin which is smooth and impunctured ; 

 remaining segments coarsely punctured, black, the third and fourth segments 

 with a narrow yellow apical margin; apical margin of the segments flat, not at 

 all refiexed; venter black, varied with ferruginous and yellow; sometimes the 

 yellow markings are quite obscure. Length .50 — .55 inch. 



Two specimens. (Belfrage.) Easily recognized from dusinus by 

 the second abdominal segment being strongly punctured. 



Odynerus designatus, n. sp. 



9.— Black, subsericeous; head shining, rather closely and deeply punc- 

 tured, a duplex spot between antennae, anterior orbits not reaching beyond 

 emargination of eyes, and a broad line on upper posterior orbits yellow-ferru- 

 ginous; clypeus broad, with sparse shallow punctures, ferruginous, upper mar- 

 gin, broader laterally, yellow, apex deeply emarginate, angles acute; mandi- 



