78 Memoirs on the Coleoptera 



also two or three on the fifth, interval; body still more elongate, 

 similar in color and lustre; head not longer than wide, three-fourths 

 as wide as the prothorax, with rather larger and more prominent 

 eyes; antennae longer, not quite so slender, fuscous, paler basally, 

 more than half as long as the body; prothorax a fifth or sixth wider 

 than long, otherwise as in the preceding though relatively much 

 larger; apex similarly very feebly sinuate, with rather blunt angles; 

 elytra three-fifths longer than wide, two-fifths wider than the pro- 

 thorax, the outline, striae and punctures nearly as in crenistriata, 

 the scutellar stria similarly short and strongly punctate; intervals 

 in some examples with numerous small feeble indentations in addi- 

 tion to the dorsal punctures; anterior male tarsi very moderately 

 dilated, though notably less narrowly so than in the preceding. 

 Length (cf) 7.2-7.6 mm.; width 2.75 mm. New Jersey. Two 

 examples roticollis n. sp. 



The species described by Zimmermann under the name ruhripes, 

 is not, as thought by the author, limited to eastern regions north of 

 the Potomac, but extends at least as far to the westward as Kansas. 

 In the northern as well as southern Atlantic regions occurs also 

 punctiformis Say, which differs from the larger rufipes Dej., in 

 the more elongate form and black or blackish femora. The true 

 rufipes of Dejean, does not occur east of the Appalachians, but 

 occupies an extended territory from Ohio to Texas, Arizona and 

 northern Mexico; it is larger and stouter than punctiformis. The 

 elytral peculiarities of roticollis in the way of superfluous punctures 

 and small indentations, as described above, are probably accidental 

 deformities, sometimes making their appearance; the head and 

 prothorax are, however, materially larger, the antennae still more 

 elongate and the body relatively larger and narrower than in 

 crenistriata. It is interesting to note the opaque sides of the under 

 surface in species of the punctiformis series, and the total absence 

 of this feature in the species allied to crenistriata, all of the latter 

 differing also in having notably coarse strial punctures. 



Group II — ceruginosa 

 Subgenus Circinalidia nov. 



In this group the body is of very small size and is more ventricose 

 than in the preceding, with thinner integument and very fine 

 elytral striae, so that the facies is quite distinct, although the more 

 important of the general characters show that it is allied rather 



