36 The Ohio Naturalist. [Vol. VII, No. 2, 



5. Physostomum cherriei sp. no v. 



Female (Fig. 1, E.). Length 3.4 mm., width .9 mm.; except 

 the pitchy brown sub-marginal lateral bands on abdomen and 

 similarly colored blotches on head and thorax, it is of very 

 uniform pale-brown. 



Head, length .78 mm., width .62 mm.; evenly rounded in 

 front and rather broad, widening toward posterior, the lateral 

 margins nearly straight; ocular notch small with three small 

 hairs, fleck wanting; temple clear, with two small hairs and two 

 large bristles alternating, posterior angle just perceptibly out- 

 turned; occipital margin broadly concave with narrow sub- 

 marginal band; palettes of inedium size, light-brown backward- 

 curved band behind ; two curved, brown blotches between anten- 

 nal fossae and labral lobes; antennal fossae with narrow dark- 

 brown curving line near minor border; palpi not extending 

 beyond margin of head; clypeal suture marked by pale band. 



Thorax, length .88 mm., width .73 mm.; prothorax broader 

 than long and narrower than head; anterior and posterior mar- 

 gins concave, lateral and posterior angles rounded, the former 

 with a short and a medium length bristle, the latter with one 

 long bristle; a short thick bristle nearly opposite temporal angle; 

 dark-brown bands extend from anterior to posterior part, being 

 marginal half the distance back, the i"est of the way submarginal; 

 a narrower and paler band on each side of the median line 

 extends nearly full length of prothorax with slight outward 

 curve; narrow dark bands in posterior half extend obliquely 

 backward toward median line; marginal extensions pale brown. 



Metathorax longer and wider than prothorax, anterior part 

 covered by it ; width a little less than length ; anterior margin 

 rounded then incurved at middle of lateral margin, which then 

 diverges to posterior angle; posterior angle with one short and 

 one long bristle ; anterior rounded margin with three small 

 bristles ; dark-brown marginal bands extend along anterior 

 border halfway loack then curve in, cross the straight sub- 

 marginal bands running whole length of metathorax, and then 

 curve forward to a point two-thirds from posterior margin. 

 Legs of pale-golden color. 



Abdomen, with sides only slightly swelling widest at middle, 

 last segment evenly rounded, with border of genital opening 

 slightly extending; segments of nearly equal length and trans- 

 verse sutures straight except last three which are posteriorly 

 convex; posterior angles have long bristles, last segment with 

 two shorter bristles on each side half way from median line, 

 genital extension with fringe of fine hairs; lateral line dark- 

 brown with band of lighter l)rown extending to margin of body 



