18 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



anteriorly with arcuate sides ; surface alutaceous and densely punctate, 

 not shiny; pale, generally with four spots, the median stripe usually 

 either obsolete or reduced to a dot. Scutellum dark. Elytra broadly 

 oblong, sides parallel, somewhat convex; humeri well marked, with a 

 distinct intrahumeral sulcus; surface alutaceous, somewhat shining, 

 moderately coarsely and densely punctate; sutural and submarginal 

 vittae usually united at apex, vittae broad in Washington and Oregon 

 specimens, but often rather narrow in the California specimens, and 

 in these the median vitta sometimes interrupted. Body beneath 

 densely pubescent, pale, usually with the middle of metasternum, 

 apex of tibiae, and tarsi dark. Length 6 to 7.2 mm.; width 3.2 to 

 3.8 mm. 



Type: In collection of M. H. Hatch, from Nisqually, Washington. 



Othek localities: Canada: British Colombia. United States: 

 Washington, Oregon, California, Wyoming. Mexico: Baja California, 

 "N. Boundary, Godman-Salvin coll.," 1907. 



Remarks: The synonymy of this species has been dealt with in 

 my earlier revision of North American species of Disonycha. This 

 species is closely related to D. pluriligata (LeConte) but is distin- 

 guished by having a more densely and coarsely punctate thorax. 



Disonycha teapensis Blake 



Figure 12 



Disonycha teapensis Blake, Proc. U. S. Nat. Mus., vol. 82, art. 28, pp. 38, 39, 1933. 

 Disonycha horni Jacoby, Biologia Centrali-Americana, Coleoptera, vol. 6, suppl., 

 p. 295, 1891 (in part). 



About 7.5 mm. in length, elongate oblong, not shining; yellow; 

 pronotum uneven and with two dark spots anteriorly; elytra with 

 traces of costae in female, and with dark sutural, median, and sub- 

 marginal vittae ; undersurf ace with middle of metasternum and about 

 coxae dark. 



Head with interocular space about half width of head, smooth in 

 the middle, with punctures on either side near eye; tubercles distinct, 

 interantennal area somewhat produced, but not acutely so, pale, 

 with narrow dark occipital band, somewhat darkened over tubercles 

 and the labrum dark. Antennae extending about to the middle of the 

 elytra, dark, with paler basal joints, fourth joint nearly twice as long 

 as third. Pro thorax not twice as wide as long, with arcuate sides; 

 disk uneven, with lateral callosities; surface alutaceous, indistinctly 

 punctate; pale, with two well-marked anterior dark spots. Scutellum 

 dark. Elytra oblong, with parallel sides, humeri pronounced, with a 

 short, deep intrahumeral sulcus ; in female traces of costae in apical 



