ODYNERUS. 347 



(Among the Slenancislroceri this type is represented by Sten- 

 anc. Fariasi.) 



143. O. Totonactis Sauss. (Fig. 23.) — Sat minutus, gracilis, niger, 

 nitidus, cinereo-subseiiceus, eribrato-puuctatus ; inetanoto convexo, 

 tenuissime punctulato, foveola vel potius sulco striato diviso, canthis 

 argenteo-pilosis ; abdominis primo segmento convexo-iufundibixlifornai ; 

 capitis punutis, pronoti niargine postico, post-soutello, metanoti fasciis 2, 

 macula subalari segmentorumque 1', 2' margine, sulfureis vel albidis 1 ; 

 tibiis antiue sulfureo-notatis ; tegulis nigris. — %. A n tennis subtus fer- 

 rugineis ; clypeo subemarginato, luteo, nigro-marginato. 



Odyn. Totonacus Sauss. Revue de Zool., IX, 1S57, 278. 

 Total length, 10 rani. ; wing, 8 mm. 



9. Form slender, elongate, narrow. Head as high as wide; 

 the notch of the eyes opened, triangular; clypeus rather strongly 

 punctate, rather widely truncate, biangulate, or having a little 

 concave apical margin. An impressed point on the vertex. 

 Prothorax squarely cut, angulate, slightly bidentate. Head and 

 thorax densely cribrose; the flanks more finely punctate; meta- 

 thorax narrowed, triangular, slightly biconvex, smooth, very 

 finely punctured only, not cribrose, like the rest of thorax; its 

 excavation being rather a wide groove than afossette; delicately 

 strigate-punctate ; the lateral ridges very sharp, garnished with 

 whitish hair. Abdomen slender, elongate ; first segment convex, 

 triangular, cribrose like the thorax; the second finely punctured, 

 contracted at base or subtuberculate; its margin a little more 

 coarsely punctured than the rest, but without a distinct zone, not 

 canaliculate ; the following less and less strongly punctured. 



Black, shining, with sparse grayish down. Scape beneath 

 fulvous; a spot on the mandibles, a frontal spot, ocular and post- 

 ocular spot, pale yellow ; posterior margin of prothorax and its 

 angles, a spot under the wing, appendix of tegulae, anterior margin 

 of post-scutel, two elongate marks on the inferior extremity of 

 metathorax, and a narrow margin on the 1, 2 abd. segments, pale 

 sulphur-yellow; the yellow fascia of the second generally still 

 narrower than that of the first; both a little prolonged on the 

 lateral angles of the segments. Tegulae black or margined with 

 brown. Feet black; tibice anteriorly with a sulphur-yellow line; 

 tarsi slightly brownish, or rather ferruginous. Wings smoky. 



1 Vel potius stramineis. 



