NEOCOLLYRIS. 235 



b\. 



A. 



B. 



6. 



Forehead deeply excavated ; 

 colour bright blue or greenish ; 



posterior tarsi dark 



Forehead not deeply excavated ; 

 colour dark cyaneous, viola- 

 ceous or almost black ; posterior 



tarsi testaceous 



Apophysis of the last ventral segment 

 of the female consisting' of a short 

 stalk dividing into two blunt or 

 rounded curved processes. 

 Head less contracted behind .... 

 Head more contracted behind. 



Elytra dilated behind 



Elytra parallel-sided 



ii. Elytra with the punctuation more or 

 less distinctly elongate before apex. 



1. Pronotum strongly constricted at 



base, with the sides strongly dilated 

 and rounded before the short col- 

 lum ; colour variable, but usually 

 dark with a violaceous reflection . . 



2. Pronotum feebly constricted at base 



and gradually narrowed until just 

 before apex ; colour cyaneous .... 

 III. Larger species (average size 15- 

 22 mm. ; rarely smaller §). 



i. Head long and narrow, vertex long, 



eyes moderately prominent ; colour 

 dark or blue-black with more or less 

 obscure metallic reflections ; pro- 

 notum before base cylindrical and 

 abruptly constricted into a distinct 

 collum ; punctuation of elytra strong, 

 elongate before apex 



ii. Head shorter and broader. 



1. Colour green, blue, violaceous, or 

 blackish. 



A. Antennae strongly thickened to- 

 wards apex. 



a. Pronotum shorter, strongly dilated 



before base, the dilatation being 

 sometimes almost globular ; col- 

 lum very distinct 



b. Pronotum longer, not strongly 



dilated before base and passing 

 gradually into the collum. 

 «*. Colour usually blue or violaceous ; 

 pronotum less slender, with at 

 most very feeble transverse 

 striation; punctuation of elytra 

 less coarse 



distincta, Chaud., p. 250. 



mcesta, Schm.-Goeb., p. 251. 



rufipalpis, Chaud., p. 254. 



lesnei, W. Horn, p. 253. 

 similis, Lesne, p. 254. 



crucntata, Schm.-Goeb., 



[p. 252. 



cylindnca, Schm.-Goeb., 



[p. 255. 



cyl h idripennis, Chaud., 



[p. 252. 



crassicornis, Dej., p. 261. 



subclavata, Chaud., p. 262. 



£ Specimens of N. crassicori/is (male) and N. subclavata, occasionally occur 

 which do not exceed llt| or 12 nun. in length ; in these exceptional cases, the 

 body and general form is stouter and broader than in the preceding group. 

 N. saundersi is also an intermediate species as regards size, but is very distinct 

 by reason of its long slender pronotum and very coarse punctuation. 



