252 Cincinnati Society of Natural History. 
with scattered, fine punctures. Front with a broad crescentic 
impression, interrupted at middle. Eyes large, prominent. 
Antenne eleven-jointed, without club, the joints gradually 
becoming wider to the tenth. Thorax with a broad black 
furcate mark extending from base to apex. Elytra coarsely 
cribrate and but little wider than thorax; widest about the 
middle, with prominent humeri. Body sparsely covered with 
erect black hairs. This species comes nearest Colyphus fur- 
catus Sch., but is longer, much less hairy, the elytra are more 
shining and immaculate jet black. 8 mm. Cincinnati, Ohio. 
As defined by Mr. Gorham in Biologia, vol. iii., p. 2, this spe- 
cies belongs in his ‘‘Sec. A.’’ I took one specimen while 
sweeping low vegetation in river bottom, July 5, 1905. I was 
very much surprised to see a representative of this genus so 
far north as Cincinnati. 
PTILINUS RUFICORNIS Say. 
May 20, 1905, I saw a maple stump that had a large flat 
sliver sticking up on one side. Into this a number of this 
species were cutting round holes. Many of them were half 
buried, leaving the posterior end sticking out of thehole. All 
were females. Until late in June they were at work here, and 
also on the wood of a split beech tree. I never take males in 
such a situation, but get them by beating dead branches. The 
male is much rarer than the female. 
ODONTOSPHINDUS DENTICOLLIS Lec. 
June 11, 1905, I took this species eating a dark brown 
powdery fungus that was growing on a poplar-log. Sphindus 
americanus Lec lives in same fungus. Americanus is abund- 
ant, denticollis is rare, and Lurysphindus hirtus Lec. is very 
rare here. 
LACHNOSTERNA VEHEMENS /forn. 
Twenty-two males of this species were taken flying about 
electriclights. Superficially it resembles Z. fusca very closely, 
but the curved and hooked inner spur of hind tibia and the 
broad angulation of hind femur distinguish it. The types 
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