36 MEMOIRS ON THE COLEOPTERA 



elongate, though similarly ornamented, elytra, except that the pos- 

 teriorly oblique part of the middle band is shorter; color differing, the 

 head and prothorax being of a pure and brilliant green and with the 

 pubescence less dense than in lepida, the hairs being largely wanting 

 toward the eyes and on certain median parts of the pronotum. Length 

 (cf ) 10.0 mm.; width 3.8 mm. Kansas (Seward Co.). 



The very pale hairy legs, though of radically different type of 

 hairiness from that of Dromo chorus, and the pale antennae and 

 pallid elytral suture, are remarkable characters in the lepida group, 

 isolating it from every other American stem form. 



25 In the marginata group there are two well marked sections, 

 one composed of those species having a median basal pallid spot 

 on each elytron, such as blanda, hamata, marginata, cuprascens, 

 macra, puritana and wapleri, and the other, similar in every other 

 way but without trace of this median basal spot, such as sperata, 

 inquisitor, marutha, knausi and probably nevadica, which I do not 

 know in nature. It seems rather surprising that some recent authors 

 should have failed to appreciate the differences between cuprascens 

 and macra, as there is no very great mutual resemblance. Cuprascens 

 is one of the most beautiful species of the genus, the very bright 

 cupreous-red, coarsely and subconfluently punctured elytra having 

 the ivory-white markings common to this group, but all embossed to a 

 conspicuous degree. In macra the elytra are much more elongate, 

 more finely punctate, cupreous-brown to dull greenish in color and 

 with the markings embossed only toward base and very slightly 

 even there; I have a large series from Indiana to Kansas. The 

 following three forms belong to the first section of the group as 

 above defined : 



Cicindela macra ssp. mercurialis nov. Similar in form and orna- 

 mentation to macra but rather less pubescent and with the prothorax 

 longer and more cylindric, with very nearly straight sides, longer than 

 wide and blackish, with feeble aeneous lustre, the elytra obscure green, 

 twice as long as wide, the sides straight and parallel to apical fifth, thence 

 rather abruptly oblique to the acute and minutely spinose angles; 

 punctures as close-set as in macra but very much coarser and transversely 

 submuricate, not so coarse, rounded or close-set as in cuprascens; tibiae 

 and tarsal joints testaceous, all blackish toward their apices. Length 

 (cf ) 12. o mm.; width 3.5 mm. Iowa. 



Differs from macra in the longer and more rectilateral prothorax 

 and very markedly in the type of elytral sculpture. 



