342 



HENRY L. VIERECK. 



dark testaceous, calcaiiie whitish. Tubercles, metatborax, petiole and second 

 abdominal segments (with exception of a piceous border) claret-brown or ferru- 

 ginous, first segment also mottled with blackish spots. 



Differs from kohlii (to which it appears to be related) by its larger 

 size, longer antennae, more rounded antennal joints, the coarser 

 punctuation of the head by its coloration. 



Type deposited in collection Am. Ent. Soc, by ]Mr. W. J. Fox. 

 Type locality, Biscayue Bay, Fla. (Mrs. Slosson). 



91 i mesa cressonii Pack. 



Psen cressonii Fox, Trans. Am. Ent. Soc, xxv, 12, ^ %. 



One % , Hertford, County, N. C, June 9, 1895 (C. W. Johnson) ; 



two % , Camden County, N. J., September 22, 1901, on flowers of 



Aster (Viereck). 



Jflimesa inaculipes Fox. 



Psen macidipes Fox, Trans. Am. Ent. Soc, xxv, % . 



One $ , North Woodbury, N. J., June 13, 1901 (Viereck). 



LIST OF NORTH AMERICAN SPECIES 



IfllMKSA Shuckard. 

 M. cylindricus Fox 9 % ■ 

 M. niger Pack. 9 % . 

 M. regularis Fox 9 - 

 M. striatas Vier. 9 • 

 M. mixta Fox 9 %, ■ 

 M. leucops 8«?/ 9 'h ■ 

 M. longicornis Fox % . 

 M. mellipes f<ay 9 % ■ 

 M.johusoni Vier. 9 %■ 

 M. kohlii Fox 9 % ■ 

 M. ferruginea Vier. % . 

 M. punctata Fox 9 • 

 M. simplicicornis Fox 9 %, ■ 

 M. fuscipes Pack. 9 • 

 M. argentifrons Cress. 9 ^• 

 M. cressonii Pack. 9 % • 

 M. cbalcifrons Pack. 9 • 

 M. borealis S»n. 9 S • 

 M. pauper Pacfc. ^ %■ 

 M. cingulata Pack. % . 

 M. uuicincta Cress. 9 % ■ 

 M. clypeata Fox 9 % ■ 

 M. granulosa Fox % . 



M. gregaria Fox % . 

 M. proxima Cress. 9 • 

 M. basirufa Pack. 9 % ■ 

 M. maculipes Fox % . 

 M. mexicana Cam. 9- 

 M. palchra Ca>». 9- 

 M. striolata Cam. 9 • 

 M. longiventris ra7n. 9- 

 M. monticola Cam. 9 ■ 

 M. montezuma Cam. 9 • 

 M. claviventris Cam. 9- 



PSE1« Latreille. 

 P. monticola Pack. 9 % ■ 

 P. annulipes Cam. 



MKOFOXIA Vier. 



N. frontalis Fox 9 . 

 N. trisulcus Fox 9 • 

 N. tibialis Cress. 9 % . 

 N. suflFusus Fox 9 • 



PSKWUL.IIS Kohl. 

 (None.) 



