BY THE REV. T. BLACKBURN. 249 



Parryi, dorsalis, &c.), but is a little larger than in most of its 

 congeners ; it is extremely nitid and bears a few conspicuous 

 punctures about its apex (in //. Mniszechi it is very similar in 

 form and size but is coarsely punctulate throughout). The 

 antennal club in the male is as long as the clypeus, in the female 

 considerably shorter. The clypeus is somewhat deeply and tri- 

 angularly emarginate in front, with moderately thickened sides 

 (scarcely differing from that of D. Parryi). The prothorax is 

 trapezoidal in the male, with its front margin less than half as 

 wide as the base, but in the female is less narrowed in front with 

 the sides a little more rounded. The mesotlioracic epimera are 

 moderately visible from above (as in D. dorsalis). The post- 

 humeral emargination, and the humeral lobes, of the elytra are as 

 in D. dorsalis; and the scutellum is shaped as in D. dorsalis^ 

 Parryi, and others. The pygidium in both sexes is much larger 

 and more protuberant than in D. dorsalis. On account of this 

 last-named character it is possible Dr. Kraatz would place this 

 insect in Hemichnoodes, but it does not agree with that genus in 

 its other principal character (the form of the base of the pro- 

 thorax), in respect of which it closely resemhles. Diajjhooiia Parryi. 

 Indeed, I cannot rega.rd Hemichrioodes as sufficiently distinct from 

 Dlaplionia to justify the formation of the genus, and should prefer 

 to let H. M7iiszechi remain in Diaphonia, where it was originally 

 placed. 



It is just possible that this species may be a variety of Diaphonia 

 (Schizorrliina) 7iigriceps, Blanch., which is too briefly characterised 

 for certain identification (though I believe a very different insect 

 in my collection to be Blanchard's species) ; the prothorax of D. 

 n^gricejjs, however, is described as having some "obsolete darker 

 (than the general fulvous colour) median spots," with which the 

 present insect does not at all agree, the prothorax of the (half 

 dozen or so) s[)ecimens that I have seen having its entire disc 

 occupied by one more or less exactly trapezoidal sharply defined 

 black spot, which is so large as to leave merely a moderately (and 

 somewhat equally) wide margin of the fulvous groundcolour on all 

 sides. If it should prove to be a var. of D. niyriceps, it would 



