NORTH AMERICAN COLEOPTERA. 213 



confusedly punctate. Prosternuni very narrow between the coxje, 

 these oval, prominent and nearly contiguous at their apices, coxal 

 cavities open beliind. Mesosternum moderate in length, nearly 

 horizontal. Ventral segments free, the first very little longer than 

 the second. Legs moderate in length. Tibiie slender, scarcely 

 broader toward apex, the posterior not sulcate but with a very indis- 

 tinct carina, the terminal spur small ; tarsi moderate, the first joint 

 longer, second short, oval, third broadly oval and bilobed, fourth not 

 dilated, the claws broadly appendiculate at base. 



The only genus of Halticites as constituted by Chapuis to which 

 this is at all related is Disonycha, and the characters in the preced- 

 ing table will enable it to be separated. The name above used is in 

 the second half merely commemorative of the genus in which the 

 species has been placed. 



It is probable that Phrynocepha elongata Jacoby, should be referred 

 to this genus. 



H. interiiieclius Jacoby. — Oval, slightly oblong, rather depressed, body 

 beneath piceous ; head, autennte, thorax and legs reddish yellow, elytra dull 

 green. Head rather coarsely and closely punctate, except at middle. Thorax 

 nearly twice as wide as long, narrowed in front, sides arcuate, anterior angles 

 very obtusely dentiform, disc not very convex, somewhat irregular, a vague, 

 shallow depression at base each side of middle, sometimes a transverse, vague, 

 depression uniting them, surface alutaceous, subopaque, the punctures moderate 

 in size and rather closely placed, less distinct in front. Elytra dull green, sur- 

 face alutaceous, the punctuation fine and very indistinct. Abdomen shining, 

 slightly pubescent, coarsely sparsely punctate. liCngth .16 — .20 inch. ; 4 — ?i mm. 



The male has the first joint of the anterior tarsus moderately di- 

 lated. The last ventral segment is broadly emarginate at middle, 

 the pygidium convex, inflexed and filling the emargination. The 

 last ventral of the female is ti'uncate at apex. 



This in.sect has a certain amount of resemblance to the Disonychfe 

 with unicolored elytra. 



Occurs in southern Arizona. 



Group VII.— MNIOPHIL^. 



Form orbicular or hemispherical. Head deeply inserted. Ante- 

 rior coxal cavities open behind. Mesosternum very short, or almost 

 entirely concealed by the close approximation of the pro- and meta- 

 sterna. Antennae 11-jointed. Posterior tibite with a short spur. 

 Claws broadly appendiculate at base. Prothorax without ante-basal 

 impression and usually w'ithout the lateral longitudinal impression. 



