330 CASEY 



distinctly reflexed and the base broadly, feebly, bisinuately trun- 

 cate, the punctures fine and sparse, becoming gradually rather 

 coarse, dense and longitudinally confluent toward the sides ; elytra 

 three-fifths longer than wide, three times as long as the prothorax 

 and scarcely wider, parallel, the sides scarcely arcuate, the apex 

 gradually and narrowly parabolic, the punctures fine, very sparse, 

 arranged in unimpi-essed, subeven series, becoming stronger and 

 more close-set laterally, the intervals still more finely, sparsely 

 and confusedly punctate, the sculpture not muricate ; abdomen 

 finely, sparse!}' punctate. Length S.S mm. ; width 3. 68 mm. 

 Lower California (Cape San Lucas) punctatus Lee. 



The metasternum is much shorter than the first ventral, a 

 remarkable character in such an elongate and parallel species of 

 this tribe and probably betokening vestigial or perhaps obsolete 

 hind wings. The singular longitudinal elevation at each side 

 of the elytral suture, very near the apex, is a character common 

 in the Epitragini but unknown in the present tribe except in the 

 present species. 



Armalia n. gen. 



This genus is allied in any way closely only to Hylocrinus and 



resembles the latter in general facies and sculpture, but the 



form of the epistoma is very exceptional in the present tribe, 



being a significant reminder of the usual lobe of the Epitragini. 



The angulation mentioned in the generic description, although 



feeble, is readily observed and very constant in both of the 



species before me. The only Mexican species of Emmcnastus 



said by Champion to have the epistoma angularly produced is 



constrictus, but this differs very much in general form and facies 



from our species. The mandibles in Armalia are feebly bifid 



at tip and toothed above, the tooth of the left mandible feeble, 



that of the right large, porrect and pointed, grasping and aiding 



to retract the labrum. The metasternum is much longer than 



the first ventral, the wings being fully developed, and the base 



of the prothorax is strongly lobed at the middle. The hind 



tarsi are slender, much shorter than the tibiae and have the first 



joint longer than the fourth. Our two species are as follows : — 



Form oblong-elongate, moderately convex, glabrous, feebly alutaceous, 

 the elytra shining, brownish-testaceous, the legs more rufous, the 

 head, prothorax and sterna piceous to blackish ; head not very 

 transverse, rather strongh- , closely and simply punctate, the eyes 

 large and moderately prominent, the sides converging and arcuate. 



