3nM THE CAKADIAX ENTOMOUXJIST. 



spoon shaped tip. Pygofers enlarged, broader than the plates at base, 

 regularly narrowing to the truncite apex, which consiberably exceeds the 

 plates. 



Described from ten examples from Tia Juana. Mexico, and Tia 

 Juana, California, collected by the author. This species introduces a new 

 group into this genus as found in America. 



Thainnotetlix diisimilata, n. sp. 



Form of va/>iifa nearly, hut still longer and more strongly built. 

 Females entirely tawny or mottled brown ; males green, with the head 

 tawny. Length, 7-8 mm. 



Vertex as in vapida nearly, obtusely angled, with the disc depressed, 

 slightly shorter than the pronotum. Front bioad, wedge shaped, rounding 

 to the clypeus, vertex margin as in vapida, almost acute. Klytra broad, 

 much longer than the abdomen, costal margin nearly straight, apical cells 

 only moderately long, usually several supernumerary veinlets from the 

 outer anieapicai cells to ihe cosia. 



Colour : Female : vertex, pronotum and scuiel'um pale yellow, ofien 

 washed with tawny, sometimes with traces of m.arkings on vertex, as in 

 vapida, and often wiih brown mottlings on disc of pronotum. Face light 

 lusiy-brown or tawny, the front smoky above with light arcs. Helow pale 

 tawny. Klytra milky subhyaline, heavily irrorate with brown or tawny- 

 brown ; sometimes the brown is almost solid, and in that case the apical 

 veinlets are light. Male : vertex dirty yellow, washed or nnrked with 

 tawny. Face darker than in female, legs and below black. Tronotum 

 green, the anterior margin pale or tawny. Klytra deep green, fadmg out 

 towards the costa and abruptly terminated just befiirc the apical cells, 

 which are decj) smoky. 



Genitalia : Female segment two thirds as long as its basal width, 

 narrowing posteriorly, the posterior margin shallowly, angularly excavated 

 more than half its width, with the angles dark-marked. Male valve broad, 

 short, scarcely angled, plates together rather narrow, roundingly narrow- 

 ing to the rounding apex, two-thirds as long as their basal width. Pygofers 

 broad, inflated, then slightly narrowing to the truncate tips, which extend 

 beyond the plates. 



Descril)ed from ten specimens from Colfax, (California, collected by 

 the author. The large size and difference in colour of the sexes renders 

 this a strikingly distinct species. 



