SMICEA. 89 



Antennae longish, and become distinctly thickened towards the apex ; scape obscure 

 yellow. On the thorax there is a transverse band at the base of the scutellum, and 

 from the middle of this runs a narrow line to the pronotum ; at the base of the middle 

 lobe is a longish line, in the lateral one a shorter and more rounded mark, and in the 

 middle of the pronotum, in front, is a small mark somewhat broader than long. The 

 middle of the scutellum at the apex is black, the black mark being much narrowed to 

 a point at the base ; at the apex the scutellum is margined, semitruncated in .the 

 middle, looked at from the head. The abdomen is shorter than the head and thorax, 

 bluntly pointed at the apex, brownish above, and with an obscure blackish band in the 

 centre above. The petiole is about one third of the length of the posterior coxae- 

 There are fourteen or fifteen teeth on the posterior femora ; these are obscurely brownish 

 at the sides and above, and the knees are obscure blackish. 



This species differs from geniculate/, in having a black mark on the middle lobe of 

 the mesonotum ; the flagellum is entirely black except at base beneath, and there is 

 only a single black mark at base of metanotum. 



33. Smicra centralis. (Tab. V. fig. 6, thorax.) 



Flava ; antennis (scapo exeepto), maculis mesonoti, metanoti medio, maculaque eoxarum postiearum nigris ; 



abdominis dorso genubusque posticis fusco maculatis ; femoribus posticis 12-dentatis ; alis hyalinis. 

 Long, fere 6 millim. 



Hah. Mexico, Presidio, near Mazatlan (Forrer). 



Head smooth, shining, impunctate, but the sides have a blistered look ; front deeply 

 excavated and carinated between the antennae. Over the oral region is a semioval 

 indistinct suture, surrounding the clypeus. The antennae become gradually thickened 

 towards the apex. Mesonotum and collar coarsely punctured and sparsely covered 

 with black hairs. There is a broad mark in the centre of the pronotum in front, a 

 broad transverse line on the mesonotum next to the collar, and which is narrowest 

 towards the centre, a broad longitudinal line in the lateral lobe, but which does not 

 extend to the apex, a broad transverse line in front of the scutellum, which becomes 

 expanded at the sides, and from it runs a broad longitudinal line in centre to the line in 

 front of the collar ; a wide longitudinal line in the centre of the scutellum, narrow at 

 either end, but especially at the base, and the centre of the metanotum is broadly black. 

 The mesopleura are broadly excavated in the middle from the tegulae, where the 

 excavation is narrow and obscurely transversely striated, and runs obliquely to the second 

 pair of coxae, becoming widened as it does so. This excavation is clearly margined, is black 

 in the centre on the lower three fourths, and is also striated in the middle, but not at the 

 sides, which are smooth and unpunctured. There is another deep narrower and more 

 perpendicular suture running from the tegulae to the first pair of legs, and this is black 

 in the middle. The scutellum is bordered, rounded at the sides, somewhat more transverse 

 at the middle, where the border is slightly interrupted and depressed ; the upper half 



biol. cente.-amer., Hymenopt., February 1884. nn 



