Cresson.] 166 [December 2, 



Hah. Mass., Pa., Va., 111. (Coll. Am. Ent. Soe.) 

 This and C valida are our largest and most robust species, and are 

 easily separated by the form of the clypcus, which in this is short and 

 depressed, and the space between the eyes and base of mandibles 

 short. 



3. C. compaeta, n. sp. ? . Closely resembles C. projyinqna, but 

 is smaller, and the pubescence shorter; the elypeus with a central longi- 

 tudinal depression ; the labrum with a central rounded elevation : the 

 metathorax rugose, the basal space reticulated; the thorax above 

 has the pubescence more blackish; abdomen less hairy, the fascia? 

 even and cinereous, that on apex of first segment broadly interrupted 

 centrally, but becomes confluent with a band at base of second seg- 

 ment; the apical margin of the segments are depressed; the lateral 

 margin of the last ventral segment is much elevated. Length four 

 and three-fourths lines. 



'llic S is more slender, with the pubescence of head and thorax 

 longer and more dense; antennae longer; apical fascia of first seg- 

 ment entire; venter banded with cinereous, the last segment with 

 lateral margin not elevated. Length four and one-half lines. 



H.ah. Connecticut, Illinois. (Coll. Am. Ent. Soc.) 



4. C. inssqualis Say, Bost. Journ. Nat. Hist., I, p. 391. This is 

 a robust species, with head and thorax coarsely sculptured, and with 

 short cinereous pubescence, that on vertex and thorax above nuich 

 mixed with black, that on metathorax and base of legs long and 

 whitish; the prothorax has a prouiincait, acute, lateral spine; the 

 abdomen is large, convex and shining, being delicately punctured, 

 Avith the fascia? even and white; the second segment has a fascia at 

 base as well as at tip, and is confluent vt^ith a short band at apical 

 sides of first segment; lateral apical margin of segments much de- 

 pressed; venter obsoletely banded. Length four and three-fourths to 

 five lines. 



Hub. N. Y., N. J., Pa., 111., Colorado. Eight ? specimens. 



Resembles C. compaeta in having a fascia of pubescence at base of 

 second abdominal segment, and is readily distinguished by the jH'omi- 

 nent lateral prothoracic spine, wliich character (if this is really the 

 true C iiuvqitalis) is not mentioned by Say. 



5. C. canadensis, n. sp. <J. Blackish, shining; hend and 

 thorax elceply and closely punctured, thickly covered by a i-ather l<Jng 

 pale ochr;;ceous pubescence, most dense on the fixce, cheeks and undi'r 

 surface of thorax, that on the mesothorax and scutellum slightly 

 mixed Avith blackish; elypeus short, truncate in front; antennte en- 



