74 MEMOIRS ON THE COLEOPTERA. 



loricata, the coxae not quite so widely separated; hind tarsi long and rather 

 stout, the basal joint almost as long as the next three. Length 3.2 mm.; 

 width i.o mm. Manitoba (Aweme), Norman Criddle. 



This distinct species is not allied closely to any other now known; 

 it is represented in my cabinet by a single male example, having 

 the sixth tergite broad and feebly sinuate at apex, the edge finely 

 serrulate. 



Myrmedonia recisa n. sp. Stout, subparallel, convex, strongly shining 

 throughout, pale piceo-testaceous, the prothorax paler and brighter, 

 the abdomen blackish, the segmental apices and the first two tergites 

 paler; pubescence pale but sparse and inconspicuous, the punctures 

 minute and very remote, closer though scarcely larger on the elytra, the 

 abdomen impunctate except irregularly along the segmental apices; 

 head large, transverse, the eyes prominent, at less than their own length 

 from the base, the sides behind them parallel for a short distance, then 

 broadly rounding to the base; antennae pale flavo-testaceous throughout, 

 slender, only slightly and gradually incrassate distally, the basal joint 

 longest, moderately thick, third slightly though evidently longer than 

 the second, fourth, fifth and sixth longer than wide, tenth nearly as long 

 as wide, the last as long as the two preceding, slender, gradually pointed; 

 prothorax two-fifths wider than long, widest near the apex, the sides 

 feebly converging and broadly arcuate to the rather blunt basal angles, 

 the base rounded, the surface convex and perfectly even; elytra transverse, 

 parallel, about a third wider and but little longer than the prothorax; 

 abdomen as wide as the elytra, narrowed very slightly apically. Length 

 2.5 mm.; width 0.83 mm. Pennsylvania. 



This species was erroneously included among my examples of 

 fauveli Shp., the latter species being confined in this country, to 

 the regions between Louisiana and southern California. The 

 present species is very much stouter ihanfaiweli and with relatively 

 larger head and prothorax, though resembling that species very 

 much otherwise, except in certain details of structure. 



Microdonia Csy. 



The following species has hitherto been placed with the unique 

 type of occipitalis in my collection, but recent more careful exam- 

 ination shows that it is different: 



Microdonia retrusa n. sp. Rather slender, depressed', dull in lustre, 

 the abdomen more shining though rather strongly and roughly, moder- 

 ately closely punctate; punctures anteriorly small and close, the pubes- 

 cence throughout very short; coloration as in occipitalis, except that the 

 antennae are blackish and not dark red-brown; head evidently narrower 



