38 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



are true types, since morosus is a substitute name for the secondary 

 homonym longulus, and the types of morosus Candeze are those 

 selected by LeConte for longulus (1853, p. 480, not 1853, p. 473). 



Distribution. — Quebec to Florida and west to Nebraska and 

 Texas. 



Alabama: Mobile; June. Arkansas: Clark, Hempstead, Lawrence; April, 

 June. Connecticut: Tolland; May. Florida: Manatee, Osceola, Pinellas; 

 March. Georgia: Catoosa, Clarke, Cobb, Fulton, Hall, Rabun, Seminole, 

 Thomas; March, June. Illinois: Champaign, Cook, Knox, Putnam, Scott, 

 Washington; May, July (Nov.). Maryland: Anne Arundel, Baltimore, Har- 

 ford, Prince Georges; June, October. Massachusetts: Barnstable, Middlesex, 

 Nantucket, Worcester; May, July. Mississippi: George, Greene, Harrison, 

 Lamar; April, May. Montana: Jefferson, Lawrence, St. Louis; April, July. 

 Nebraska: Douglas; June. New Hampshire: Carroll; July. New Jersey: 

 Atlantic, Camden, Ocean; May, August. New York: Orange, Suffolk, Tompkins, 

 Washington; June, August. North Carolina: Buncombe, Duplin, Hyde, 

 Moore, Sampson, Swain, Wake, Wayne; April, July. Ohio: Adams, Delaware, 

 Fairfield, Franklin, Greene, Hocking, Scioto; June, August. Pennsylvania: 

 Allegheny, Indiana, Monroe, Northampton, Philadelphia; April, July. South 

 Carolina: Oconee; April. Tennessee: Carter, Sevier; June, September. 

 Texas: Bastrop; April. Virginia: Fairfax, Fauquier, Prince Edward; May. 

 Washington, D.C: April, June. Ontario: "Go Home Bay"; June. Quebec: 

 Windsor Co.; July. 



M. morosus is most likely to be confused with depressus. In general, 

 morosus may be separated from that species by the small pronotal 

 punctures, subparallel sides of the pronotum with pronounced anterior 

 curve, and a more slender, jutting frontal margin. Less frequently, 

 morosus is lighter in color than depressus. Typical specimens are not 

 difficult to identify when one is familiar with the characters, but small 

 variations (artificial or natural) make it necessary to dissect the 

 genitalia for positive identification. The thick mat of spines in the 

 bursa easily identifies the females. The male genitalia are charac- 

 terized by the angulate paramere, rather than evenly rounded as in 

 depressus, the moderately dense hairs at the apex of the paramere, 

 and the rather broad, tapering aedeagus. 



Specimens from Florida are usually smaller and the pronotal width/ 

 length ratio is more variable, but they do not seem to differ signifi- 

 cantly from other morosus. M. simulans is regarded as a synonym of 

 morosus. 



18. Melanotus cribulosus (LeConte) 



Figures 5;, lOd 



Cratonychus cribulosus LeConte, 1853, p. 478. 



Melanotus cribulosus. — Candfeze, 1860, p. 357. — Hyslop, 1915, p. 17. — Thomas, 

 1941, p. 260.— Severin, 1949, p. 17.— Srivastava, 1958, p. 87. 



Male. — Body color reddish brown, covered with fairly dense whitish 

 hairs evenly distributed over body. 



