Sept ,1905.] BUENO : NOTONECTA OF NORTH AMERICA. 157 



5. Notonecta uhleri Kirkaldy. 

 Notonecta uhleri. 



1897. Kirk.. Ann. Mag. N. H. (6), XX, p. 58.* 



1897. Kirk., Tr. Ent. Soc. Lond., p. 415. 



1902. Bueno, Jour. N. V. Knt. Soc, vol. X, pp. 231 and 235. 



1904. Kirk., Wien. Ent. Zeit., p. 132. 



1905. Bueno, Jour. X. V. Ent. Soc, vol. XIII, p. 46. 



Description. — " Head : notocephalon in the form of an inverted wine-decanter, 

 margins "really curved, widely diverging toward the vertex, which is six to eight 

 times wider than the synthlipsis, at which point, the eyes are almost contiguous ; 

 breadth of the eye about ten times as great as that of the synthlipsis. Pronotum : 

 humeral angles acute, accentuated, lateral margins sinuate, humeral margins little 

 separate from the posterior margin.. Metanotum dark purple-brown. Hemielytra 

 varying from dark brick-red to rich orange-yellow ; a large irregular black blotch at 

 the base of the corium extending transversely and nonacuminately from the apex ol 

 the clavus to the golden-yellow exocorial lateral submargin ; membrane dark red- 

 brown, apically black — this tint encroaching more or less basally. Alar nervures 

 brown.' Pedes : coxa blackish ; intermediate tibial spur blunt, subcylindrical. Ab- 

 dominis dorsum : first and second segments rufoteslaceous, deeper marginally, the 

 remainder flavotestaceous, lurid marginally; this latter tint encroaching more and 

 more apically. Abdominis venter rufotestaceous, densely provided with greenish 

 black cilia." (Kirk., Rev., p. 415.) 



Distribution. — Massachusetts (Uhler, Montandon and British Museum), New 

 Orleans (Paris Museum), Florida ( Uhler). My collection : Van Cortlandt Pk., New 

 York (also colls. U. S. N. M., Davis and Heidemann ) ; Putnam Co.,^ X. \ .; Wash- 

 ington, D. C. (also coll. Heidemann) ; Palisades, N. J. " La.," U. S. N. M. 



Notonecta uhleri was first described by Kirkaldy in 1897 (1. c), 

 from a male in the Uhler collection. It is a very rare bug, but so 

 characteristic that its late description is remarkable. I have found 

 records of only twenty-five specimens of this insect in collections, of 

 which the type and one other are in Prof. Uhler's collection, a cotype 

 in Mr. Kirkaldy's, two specimens in Mr. Otto Heidemann's, three in 

 the U. S. National Museum, two in the British Museum, one in the 

 Paris, another specimen in the collection of Mr. W. T Davis, and the 

 remaining thirteen in mine. 



This waterbug is very noticeable on account of its bright color and 

 peculiar notocephalic structure. It is impossible to mistake it for any 

 other, although it approaches N. variabilis somewhat in size and gene- 

 ral contour. I have touched on its habits previously, and nothing is 

 known of its life-history or development. I have, however, gotten 

 ova from a female taken in this vicinity, and they are undistingmsh- 

 able from those of X. variabiis. 



