TKII'.K XX. CKUTOIUIVXCII IM. 455 



toothed ; third tarsal joint broadly bilobed; claws armed with a 

 slender tooth, almost as long as the claw itself. 



KEY TO SPECIES OF CCELOGASTER. 



a. Dorsal channel of thorax entire; disc with an obtuse tubercle each 



side near middle above and in front of lateral tubercles; antecoxal 



ridges distinct. 707. ZIMMERMAXXI. 



act. Dorsal channel interrupted at middle; disc without obtuse tubercles; 



antecoxal ridges obsolete. 708. I.ITT-RATT T S. 



707 (SS60). CCELOGASTER ziMMERMAXxi Gyll., Schon., 1837, 589. 



Broadly oval, robust. Piceous, variegated above with spots of yellowish- 

 white scales, condensed on sides and near apex of thorax and forming on 

 elytra a cruciform scutellar spot and a short oblique bar each side; be- 

 neath densely clothed with large oval white scales; antenna?, tibia? and tarsi 

 reddish-brown. Beak thinly pubescent except near tip, finely striate, 

 coarsely and densely punctate. Thorax not much wider than long, broadly 

 constricted near apex, lateral tubercles acute, apical cusps well marked, 

 triangular; disc densely, not coarsely punctate. Elytra one-third wider 

 at base than thorax, humeri rounded; striae fine, their punctures very 

 small; alternate intervals distinctly more convex. Length 3 3.2 mm. 

 (Fig. 103, C.) 



Martin and Perry counties, Iiid., scarce; May 16 July 13. 

 South Orange and Alpine, New Jersey. Flatlmsh and White 

 Plains, N. Y. ; June 12 July 25. Ranges from Canada and New- 

 foundland to Michigan and Washington, south to Georgia. Re- 

 corded as occurring on beggar's ticks, Kidi'iix. and on swamp 

 herbage. 



708 ( -). CCELOGASTER LITURATUS Dietz. 1896, 457. 



Smaller and more oblong than the preceding. Differs by characters 

 given in key and by having the thorax one-fourth wider than long, not dis- 

 tinctly constricted near apex, its surface much less uneven. Elytral in- 

 tervals equal, the transverse pale bar of scutellar spot faint and somewhat 

 oblique, the short bar represented by a spot on seventh interval; prosternum 

 very deeply emarginate. Length 2.7 mm. 



Lake Co., Ind., rare; April 20. Ottawa, Canada, New Hamp- 

 shire and Massachusetts ; Leng and Cambridge collections. 

 Dietz's types were from Illinois and near Detroit, Mich. 



XIT. PKRIGASTER Dietz, 1896. (Or., "round" + "belly.") 



Short, robust species, distinguished by characters given in key 

 and by having the beak stout, shorter than thorax; eyes large, 

 round, scarcely concealed in repose; thorax strongly narrowed in 

 front, its apical margin with two cusps and disc with two tuber- 

 cles; elytra broadly oval, wider at base than thorax; coxa? widely 

 separated; tarsal claws simple, diverging. Two species are known 



