H. C. FALL 467 



often with the punctures more or less seriallj' arranged and with two slightly 

 elevated discal costae extending back from the base for a variable distance; 

 color almost entirely black, the basal edge often in part yellow, and sometimes 

 with one or two other miiiute j-ellow spots; shield minute or wanting. 



Pijgidium, body beneath and legs entirely black; front tibiae without termi- 

 nal spur, that of the middle tibiae unusualh' small. 



Length 3.9 to 4.6 mm.; width 2.2 to 2.6 mm. 



Disiribution. — New York: Peekskill (Leng Coll.) ; Potsdam, July 7 (Liebeck); 

 Golden (Van Duzee — Nat. Mus. Coll.); "X. Y." various collections. New 

 Jersey: (Liebeck): Rahway, July 9 (Soltau — Xat. Mus. Coll.). Pennsylvania: 

 West Park, Philadelphia, July 15 (Wenzel); Carlisle Junction, July 1 (W. S. 

 Fisher). Maryland: Deer Park, July 1 (Hubbard A: Schwarz). Virginia: 

 Afton (Hubbard & Schwarz). Tennessee: Nashville, Aug. 4 to 15 (Wickham 

 Coll.). Michigan: Detroit, and Grand Ledge, July 21 (Hubbard & Schwarz). 

 Ontario: Ridgeway (Killman). Missouri: St. Louis (Schuster — in Leng Coll.); 

 "Mo." A7-kansas: Fayetteville, July 31 (Knaus). Kansas: (Nat. Mus. 

 Coll.) . Oklahoma : Wi.-^ter. July 3 (Sohau— Xat . Mus. Coll.) . 



148. Pachybrachys pulvinatus Suffrian 



So closely resembles trinoiatus that a statement of differences 

 only is necessary. The prothorax is a little narrower, less dilated 

 behind, the sides straighter, the apical pale margin interrupted 

 at middle by the black M in the great majority of specimens; 

 elytral punctures even denser than in trinoiatus but less coarse, 

 without trace of striae except a feeble submarginal one, the upper 

 margin of the stria forming a fine lateral costa, the discal costae 

 faint or entirely wanting; elytra often and typically with a very 

 few fulvous spots, a spot on the front thighs and the apices of the 

 middle and hind thighs pale yellow. The sexual disparity in the 

 width of the front between the eyes is a little more marked than 

 in trinotaius in which it is not very obvious. As in trinotatus 

 there is no visible terminal spur of the front tibia and the last 

 joint of the maxillary ])al])i does not differ appreciably in the 

 sexes. There is a good deal of variation in the markings, the 

 elytra in the series before me varying from entireh^ black to 

 entirely yellow except for a narrow sutural stripe, the tip of the 

 humeral umbo and the posterior half of the side margin, black. 

 The prothorax in a few examples is entirely black excei)t for a 

 small median subapical spot and a snialhn- i)ale dot on each side 

 near the front margin. 



Distribution. — New Jersey : (Liebeck Coll.). Georgia: Liebeck, Snow, Horn 

 and Blanchard Colls.; probably all collected by Morrison. Florida: Capron, 

 April 14; Baldwin, June 10; Enterprise, June 7 and Tampa, April 16 (all in 



TRANS. AM. ENT. SOC, XLI. 



