io8 Memoirs on the Coleoptera 



nearly flat, the third with four or five punctures. Length (9) 94 

 mm.; width 3.25 mm. Colorado (Magnolia, Boulder Co.). 



parallelum n. sp. 

 13 — Elytra shorter, scarcely one-half longer than wide, more oval; body 

 smaller, the head relatively smaller. Form somewhat oval, convex, 

 shining and metallic-greenish, the elytra less shining in the female 

 and more cupreous; under surface and legs as in longiihim; head 

 slightly elongate, scarcely three-fifths as wide as the prothorax, with 

 large though scarcely prominent eyes, the impressions small; an- 

 tennae slender, black, not quite half as long as the body; prothorax 

 a fourth wider than long, the parallel sides evenly arcuate and 

 narrowly impressed, the surface deplanate near the margins; basal 

 angles broadly rounded; base as wide as the rather deeply sinuate 

 apex; transverse riigulae rather strong, the anterior impression 

 feeble but evident; foveae small, feeble, slightly rugulose, feebly 

 prolonged anteriorly for some distance; elytra oblong-oval, with 

 arcuate sides, gradually but little more arcuate basally, fully two- 

 fifths wider than the prothorax; apex rather rapidly rounding and 

 obtuse, the oblique sinus straight; striae grooved, impunctate, the 

 intervals nearly flat, the third with four punctures; met-episterna 

 three-fourths longer than wide. Length (9) 7-0 mm.; width 2.8 

 mm. Lake Superior (Marquette), — Sherman.. .marquettense n. sp. 

 Elytra much more elongate, more than one-half longer than wide. ... 14 

 14 — Elytra rather rapidly rounding and somewhat obtuse at apex. 

 Body notably elongate, the upper surface polished, cupreous, the 

 anterior parts with some greenish reflection, the elytra less shining 

 in the female, which is distinctly larger than the male; under 

 surface, legs, antennae and palpi deep black; head barely longer than 

 wide, less than three-fifths as wide as the prothorax, with moder- 

 ately prominent eyes; antennae (cf ) nearly half as long as the body, 

 shorter ( 9 ) ; prothorax in general outline as in the preceding 

 species but varying from less than a fourth to fully two-fifths wider 

 than long, the base not quite as wide as the rather deeply sinuate 

 apex; basal angles broadly rounded and with thickened margin 

 which extends inward at base to the inner part of the foveae, which 

 are shallow^ irregularly rounded and feebly rugulose; anterior 

 impression obsolete to distinct; elytra fully three-fifths longer than 

 wide, fully a fourth wider than the prothorax, the parallel sides 

 feebly arcuate, more rounding at base; apical sinus barely more 

 than straight; striae grooved, smooth; intervals nearly flat, the 

 third with four or five punctures; anterior male tarsi well dilated, 

 smooth. Length (d^ 9 ) 8.2-9.0 mm.; width 2.9-3.15 mm. Winni- 

 peg to Lake Superior (several localities) and Arkansas. Abundant. 

 Twenty specimens. [PI. protractus and chalceus Lee.]. 



seminitidum Kirby 

 A — Similar in general characters but slightly narrower, polished, 

 darker, viridate anteriorly, the elytra black, with very feeble 

 greenish lustre; antennae with evidently shorter joints; prothorax 

 shorter, a third wider than long, more narrowed at base, widest 

 more decisively before the middle than in any example of semini- 



