86 HYMENOPTEKA. 



The mouth and inner portion of the orbits of the eyes towards the middle are yellow, 

 as in S. miranda ; the edge of the head on the lower side is narrowly lined with yellow. 

 The pro- and mesonotum coarsely transversely striated ; posteriorly the latter (as is also 

 the scutellum) is coarsely rugose-punctured ; in the centre of the scutellum at the base 

 is a blunt thick tooth or tubercle. The apex is bituberculate, as in S. miranda, these 

 teeth being black at the top and entirely so behind, and are united by a broad black 

 band, which is shaped like a half-circle, looked at from behind. Metathorax reti- 

 culated ; there is a central ridge which bifurcates near the apex. The petiole is more 

 than two thirds of the length of the posterior coxse. The teeth on the hind femora 

 are short and blunt, as in 8. miranda. 



Apart from the differences in coloration this species is readily known from S. miranda 

 by the blunt, tooth at the base of the scutellum and by the wings not being hyaline at 

 the apex, there being a broad hyaline band extending half a line beyond. The arrange- 

 ment of the areas on the metanotum is quite different, 8. miranda having a lanceolate 

 field exactly in the centre, with two wider fields on each side, the upper four- and the 

 lower five-angled ; in 8. trituberculata there is in the middle only an irregular carina. 



"19. Smicra miranda. (Tab. IV. figg. 13, $ ; 13 a, metathoracic fields.) 

 Smicra miranda, Cresson, Trans. Amer. Ent. Soc. iv. p. 49 . 



Rah. Mexico * ; Guatemala, San Geronimo ; Panima and Senahu (Champion) ; Nica- 

 eagua, Chontales (Janson). 



The amount of black on the mesonotum varies. 



20. Smicra lamyrus. 



Smicra lamyrus, Walker, Entomologist, 1842, p. 337; Cresson, Trans. Amer. Ent. Soc. iv. p. 58 \ 

 Hab. Mexico 1 . 



21. Smicra montezuma. 



Smicra montezuma, Cresson, Trans. Ent. Soc. iv. p. 51 \ 

 Hab. Mexico 1 . 



b. Wings hyaline. (Species 22-36.) 



22. Smicra azteca. 



Smicra azteca, Cresson, Trans. Amer. Ent. Soc. iv. p. 51 l . 

 Hab. Mexico 1 . 



23. Smicra captiva. 



Smicra captiva, Smith, Trans. Ent. Soc. (3) i. p. 42 (1862) ; Cresson, Trans. Amer. Ent. Soc. iv. 

 p. 58 1 . 



