304 MEMOIRS ON THE COLEOPTERA 



as in the preceding genus, but the tooth is shorter, broader and 

 much less developed, though sharply angulate and the surface 

 behind the notch has a fine transverse carina; the setse of the 

 several pairs are similar but more widely separated. Ligula 

 shorter, more slender and only feebly dilated at apex, the paraglossaB 

 long, very slender, widely diverging from near the base of the 

 ligula, which is wholly free for the greater part of its length. The 

 labial palpi are long, the second joint very slender, bisetose anteriorly 

 and only slightly longer than the third, which is broader than the 

 second and somewhat inflated, narrowed, compressed and trun- 

 cate apically. The maxillary palpi are much shorter than in 

 Cratocara and quite different, being nearly as in the Acupalpids, the 

 last joint a third longer than the third. The gently falciform inner 

 lobe of the maxilla has an obtuse tooth internally beyond the middle 

 and an inner fringe of very coarse, widely separated spines and the 

 last joint of the outer lobe is moderately long and very gradually 

 finely pointed. 



There are but few species known at present and only one de- 

 scribed; the two in my collection may be known by the follo'wing 

 brief diagnoses: 



Body oblong, subparallel, convex, shining, deep black, or when immature 

 piceous, with rufescent suture,; under surface black to paler, the legs 

 pale testaceous; head very slightly narrower than the prothorax; 

 antennae rather stout, the joints short, piceous, the two basal joints 

 paler, extending slightly behind the thoracic base; prothorax three- 

 fifths wider than long, widest before the middle; sides strongly 

 rounded anteriorly, converging and less arcuate basally, becoming 

 rather abruptly sinuate for a short distance from the prominent and 

 sharply defined angles; base arcuate at the sides, much narrower 

 than the feebly sinuate apex, the apical angles obtuse but evident; 

 surface smooth throughout, very finely reflexed at the sides, the 

 stria fine but deep and distinct, entire; foveae linear, narrow and 

 deep, impunctate, extending to the deep groove defining the broad 

 flat basal bead; elytra one-half longer than wide and a fourth wider 

 than the prothorax, parallel and very feebly arcuate at the sides, 

 rounded at apex, the sinus very feeble; striae rather fine but impressed, 

 coarser on the declivity; intervals feebly convex, the discal puncture 

 strong, only a little behind the middle; legs rather short and slender, 

 the anterior tarsi feebly swollen in both sexes, the posterior slender, 

 filiform, two-thirds as long as the tibiae, the first three joints de- 

 creasing uniformly and rather rapidly in length, the fifth almost as 

 long as the preceding three. Length (cf 9 ) 5.0-5.8 mm.; width 

 1.65-1.9 mm. Texas (Brownsville). [Polpochila mexicana Bates; 

 Fog. piceus Horn] mexicanus Bates 



