Platynin.e 89 



Newman. In the general structure of the body it agrees very well 

 with the other species of Micragonum, except that the sides of the 

 prothorax and elytra are less finely reflexed and diaphanously 

 pale; secondly in having the elytra rather shining in the male 

 but opaculate in the female; lastly, in the remarkable coloration 

 of the antennae, the first three joints and basal node of the fourth 

 rufous, thence black to the apex of the seventh joint, the last four 

 joints being very abruptly of a creamy white. The male seems to 

 be rather less abundant than the female. Other points relating 

 to this species are recorded in the following description: 



Body oblong-suboval, moderately convex, shining, the elytra (cf ) faintly 

 alutaceous or ( 9 ) almost opaque; color black, excepting the fine 

 pale side margins, the elytra dark coppery-brown; under surface 

 black, the legs pale, especially the femora; head but slightly elon- 

 gate, rather more than two-thirds as wide as the prothorax, with 

 well developed and very prominent eyes; impressions very short, 

 unusually feeble; palpi pale, slender, of the usual structure; an- 

 tennae very slender, fully two-thirds as long as the body, the third 

 joint distinctly shorter than the fourth (cf), or subequal (9); 

 prothorax relatively larger than in any of the preceding species, 

 fully a fourth wider than long, the sides subevenly rounded through- 

 out, distinctly and abruptly but not broadly reflexed, more oblique 

 but not more reflexed basally, the angles broadly rounded; base 

 narrower than the rather deeply sinuate apex, the apical angles 

 blunt; impressions almost completely obsolete, the stria fine, entire; 

 fovese large, deeply concave, nea- 'y smooth, not much prolonged; 

 elytra oblong, parallel, hardly r le-half longer than wide, rapidly 

 rather obtuse at apex, with lon^ and shallow though distinct sinus, 

 three-fourths wider than the prothorax, the feebly arcuate sides 

 rapidly rounding at base; strise very fine, impunctate, distinctly 

 impressed (cT), less so (9); intervals feebly convex, the dorsal 

 punctures small, four in number, the anterior two near the third, 

 the other two near the second, stria; scutellar stria fine, the ninth 

 very fine, half as far from the edge as from the eighth; met-episterna 

 fully twice as long as wide; tarsi long and very slender, the lateral 

 groove very fine, the anterior of the male feebly dilated. Length 

 (icf , 79 ) 7-3-7-8 mm.; width 3.0-3.2 mm. Alabama (Mt. Vernon 

 and Salco), — Loding. Not rare in certain localities. 



picticome Newm. 



LeConte (Bull. Bk., 1879, p. 49) gives alhicrtis Dej., as a species 

 also having four abruptly pale outer antennal joints, but there the 

 femora are dark in color and the dorsal elytral punctures are said 

 to be three; in picticome the dorsal punctures are four in number, 

 not five as stated by LeConte. These punctures are said also to 



