ODYNERUS. 289 



104. ©. lilasfld&SS Sauss. — Niger, nitidus, dense punctatns ; metathorace 

 inermi, rotundato ; abdoniine ovato-conico; antice truucato, sessili; 

 corpore sulfureo-ruultipicto; abdominis segnientis 1-5 sulfureo-linibatis, 

 lO et 20 insuper utrinque fascia trigonali sulfurea (vel fascia antica 

 interrupta) ; pedibus llavis ; alis subhyalinis. — £> . Clypeo et orbitis 

 partini flavis. 



Odyn. blandus Sauss. Revue et Mag. de Zool. XXII,1S70, 105, 27, J . 



Total lengtb, 9 mm. ; wing, 7 mm. 



9. Clypeus pyriform, flattened, rather strigose, truncate at tip 

 and rather rounded. Head and thorax densely punctate ; post- 

 scutel quite shortly truncate, quite linear, transverse, but rounded, 

 not crested ; its hinder face rather oblique, punctured ; this form 

 being the transition to the Stenodynerus. Metathorax small, 

 short, and rounded, not angulate, shallowly punctured; its 

 excavation strigose, not sharply margined, except superiorly, 

 where it forms a little ridge or tooth behind the post-scutel. 

 Abdomen ovate-conical ; the first segment not quite as wide as 

 the second, scarcely truncate anteriorly, but without a sharp ridge, 

 sessile ; its superior face slightly depressed, as punctate as the 

 thorax; 2d segment densely punctate, but not quite as strongly, 

 its hinder margin more strongly so, and densely punctured, 

 slightly and widely depressed; the following punctured. 



Black, shining; a line on the mandibles, clypeus, inner orbits, 

 frontal spot, a line behind the eyes, the scape beneath, a wide, 

 but interrupted anterior margin of prothorax, a spot under the 

 wing, tegulse, a dot on mesothorax before the scutel, post-scutel 

 above, and sides of metathorax, sulphur-yellow. All the segments 

 of the abdomen margined with sulphur-yellow. The first, in addi- 

 tion, with two oblique yellow bands or macula?, fused w T iththe yel- 

 low bordering laterally ; the 2d adorned on each side with a large 

 triangular macula, forming a wide interrupted fascia beneath ; 

 this segment has similar yellow ornaments. Anus black. Feet 

 yellow ; coxae black ; the 2d and 3d pair margined with yellow 

 and spotted at tip. Wings subhyaline, nerves brown. 



Var. 9 . Clypeus with a central black spot. 



Bess. a. diff. — In its rather stubbed form it recalls the form 



of 0. Gatskillemis, but its abdomen is still more sessile, more 



truncate anteriorly, and more square. By its rich livery it recalls 



0. sidfureus, but is very distinct from it by its non-angulate 



19 



