152 Journal New York Entomological Society. [Voi.xni. 



This waterbug is intermediate between Notonecta indica Linne and 

 N. undulata Say. From the former it may be distinguished at once 

 by the head characters ; and the pronotum and scutellum will serve 

 to separate it from the latter. 



The preceding description is perforce very brief, as there were 

 only the two somewhat old specimens to draw it up from, and I did 

 not venture to spread the wings or otherwise prepare them for fear of 

 destroying the insect. The colors are not mentioned (except black), 

 as they change in old specimens and those preserved in alcohol ; and 

 the living or freshly caught insect may be very different in hue 

 from those before me. Color characters, as pointed out in the intro- 

 duction, are unreliable and misleading. 



It affords me sincere pleasure to dedicate this, my first described 

 insect, to Dr. L. O. Howard, to whom lam indebted for many kind- 

 nesses and much goodwill. 



3. Notonecta undulata Say. 

 Notonecta undulata. 



1832. Say, Descr. n. sp. Het. Hem., N. A., Fitch reprint, p. 812 LeComte 

 Ed. Comple. Writ., 1859, p. 368, vol. I. 



1851. Fieb. Rhyncholographieen, p. 55 (of separate). 



1S51. Fieb., Gen. Hydroc, p. 26 (of separate). 



1574. Packard, Half his. \v. Insects, pt. 5, pp. 139-41, fig. 103 ; ova, p. 1 59. 



1875. Uhl., Bull. L T . S. Geol. Surv. (2), V, p. 239, pi. 2, fig. 33. '* 



1876. Glover, Ms. Notes, p. 54, pi. V, fig. 9. 



1877. Uhl., Bull. U. S. G. & G. Surv., Bull., vol. 3, No. 2, p. 453. 



1575. I lil.. Bull. U. S. G. & G. Surv., vol. IV, p. 509. 



1878. Uhl., Proc. Bost. Soc. X. II., vol. XIX, p. 442. 

 1883. Packard, Guide, p. 537. 



1885. L'hl., Stand. N. H., vol. II, p. 252 (partim). 



1886. Uhl., Ch. Fist, p. 28 (partim). 



1888. Comstock, Introduction, p. 186, fig. 157. 



1889. Weed, Bull. Ohio Agr. Sta., Tech., I-er. I, p. 12, pi. I, fig. 3. 



1889. Garman, Bull. Ills. Faby. N. IF, art. IX, vol. Ill, p. 174. 



189!. Summers, Bull. Agr. Exp. Sta., F T . of Tenn., vol. IV, No. 3, p. 82. 



1890. Hyatt & Arms, Insecta, p. 1 21, fig. 70. 



1894. Uhl., Proc. Calif. Acad. Sci , 2, vol. IV, p. 292. 



1894. Van Duzee, Bull. Buff. Acad. Nat. Sci., vol. V, No. 4, p. — . 



1895. Gillette & Baker, Bull. 31, Colo. Agr. Exp. Sta., Tech. Ser. I, p- °3- 

 1897. Kirk., Tr. Ent. Soc. Fond., p. 410. 



1897. Smith, Ins. N. J., p. 144. 



1S99. Packard, Ent. for Beginners, p. 83. 



1899. Comstock, Manual, p. 130, fig. 49. 



1500. ( Isborn, Contr. Dep. Zool. and Ent. O. S. I'., No. 2, p. 79. 



