260 ENTOMOLOGICAL NEWS. [Oct., '05 



plains of northern New Mexico. (See Ann. Rept. Chief Eng. 

 S. Geol. Surv. W. looth Merid., 1876, Append. J. J., 

 pp. 511-513.) One of these, coronata, he cited as the type of 

 the genus. Since corona fa is now considered to be congeneric 

 with the Oedipoda plattci Thomas, we should use Trachyrhachis 

 in place of Mestobrcgma and take for the type of the genus 

 coronata Scudd. instead of plattei Thorn. 



Professor Jerome McNeill has suggested the generic name 

 Mctator for Saussure's pardalina. (See Proc. U. S. Nat. 

 Mus. XXIII, p. 394, PI. XXI, fig. 3, 1901.) 



Five New Species of Micronecta Kirkaldy 

 (Aquatic Hemiptera). 

 BY G. W. KIRKALDY. 



Until 1897 these tiny waterbugs (belonging to the family 

 Corixidae and characterized by the conspicuous scutellum, by 

 the head being similar in both sexes, strigil present in the 

 males, length never more than 4^ mm., etc.) were invariably 

 termed Sigara Fabricius, 1775, but in that year (Entomolo- 

 gist XXX, p. 260) I pointed out that Sigara was strictly 

 equivalent to Cori.\a Geoff roy, 1762 (incorrectly written Con'sa 

 by many authors), and therefore proposed the name of Micro- 

 necta ("tiny swimmer"). Two years later, Bergroth (Eut. 

 Monthly Mag. XXXV, p. 282) erected a new genus, Tena- 

 -gobia, for the then known American forms, separating these 

 on account of the structure of the pronotum, the posterior 

 margin of which is emarginate in Tenagobia, more or less 

 rounded convexly in Micronecta. Early in the next year* 

 (Revue d'Entom. France, XVIII, pp. 101-4) Horvath revised 

 the palsearctic species, raising the total from eight to twenty- 

 three, and one has since been added. The learned Hungarian 

 doctor's characters are based upon the subcostal furrow, the 

 comparative length of the pronotum, etc., but I think the form 

 of the mesoxyphus and antennae should not be neglected. I 

 have not attempted, as yet, the examination of the strigil, 

 * Dated Dec., 1899, but this journal is notoriously antedated. 



