22 THE CANADIAN ENTOMOLOGIST. 



of Tyngsboro, Maassachusetts, and to Frederic Knab, of Wash- 

 ington, D. C, both of whom agreed with me that the southern 

 species was undoubtedly the one described as hrunnicollis by 

 Lacordaire, although Mr. Blanchard wrote that examples of the 

 form discribed from Indiana had been in his collection for many 

 years under that name. The northern form is apparently unnam- 

 ed and is herewith described more in detail as follows: 



Lema palustris sp. nov. 



Elongate-oblong. Head, thorax, scutellum and under surface, 

 except abdomen, dull red; antennae, legs and abdomen black; elytra 

 bright greenish blue. Head very finely and sparsely punctate, 

 the front with a strong bilobed tubercle. Antennae with joints 1 

 to 4 subequal, the others longer and gradually stouter. Thorax 

 as long as wide, finely and very sparsely punctate, with a single 

 row of 5 or 6 coarser punctures along the median line; sides con- 

 stricted behind the middle. Elytra impressed on the inner side 

 of humeral angles, each with 10 rows of rather coarse, scarcely 

 impressed punctures; intervals wholly smooth; abdomen distinctly 

 but rather sparsely punctate. Length 4-4.5 mm. 



In Indiana the species here discribed has been taken by sweep- 

 ing herbage only in the tamarack swamps of the northern third of 

 the State, hence the specific name given. It is probably a mem- 

 ber of the Alleghanian fauna. The principal differences between 

 it and the southern form, believed to be the true hrunnicollis, have 

 been given above. The length of the latter is 5-5.5 mm., and the 

 body is proportionally much stouter. From the description of 

 L. coloradcnsis Linell, palustris differs in having the antennae and 

 legs wholly black and in the abdomen being distinctly punctate. 



Chlamys nodulosa, sp. nov. 



Subquadrate, robust. Uniform dark brownish bronze. An- 

 tennae paler at base, serrate from the fifth joint, the third and fourth 

 joints subequal. Eyes large, reniform, deeply emarginate on the 

 inner side, separated by an interval less than their longer diameter. 

 Front with a number of fine scattered punctures. Thorax without 

 trace of strigse, the central gibbosity large, its crest with a pair 

 of tubercles, its anterior face with four interrupted carinae, each 

 pair confluent at apex; a prominent tubercle each side one-third 

 from apex and near the outer of these, carinae, and another, semi- 

 obsolete, midway between this and the side of thorax, the intervals 

 between the carinae and tubercles deeply^ coarsely but not densely 

 punctate. Elytra each with about 9 prominent tubercles, the 

 intervals between these with coarse punctures. Pygidium coarse- 

 ly and sparsely punctate and with three short carinae extending 

 from a median gibbosity nearly to the posterior border. Under 



