1915] Lloyd — Wood-Boring Trichopiera 17 



comparison of the insect with Herrich-Schaeffer's figure will show. 



Ranatra quadridentata Stal No. 152. The specimen under this 

 name and number is a typical R. americana Mont. 



Belostoma americanum Leidy No. 155, Harris No. 109 is Letho- 

 cerus obscurus Duf. 



Under the label Notonecta insulata Kirby, No. 156, are placed 

 Harris' Nos. 175 and 17e which Uhler has referred to N. undulata 

 Say in his work cited. He remarks that "It varies also in size, 

 ranging from 9 to 12| millims in length." The discrepancy in 

 size arises from the fact that 17e is A^. variabilis Fieb. The other 

 specimens are correctly labelled as they stand. 



To recapitulate : The following species did not appear in Uhler's 

 paper under their proper names, but as the species with which 

 they are synonymous. 



Lygceus kalmii Stal = Z,. turcicus Uhl., not Fabr. for all except 

 those from Michigan, for the specimens under No. 54. 



Emblethis vicarius Horv. = Gonianotus margine'punctatus Uhler, 

 not Wolff, for specimen No. 65. 



Pelocoris carolinensis ^ueno = Naucoris poeyi Uhler, not Guerin, 

 for specimen No. 148. 



Ranatra protensa Mont. = R. fusca Uhl., not Palisot de Beauvois, 

 for specimen No. 151. 



Ranatra americana M.ont.=R. quadridentata Uhl., not Stal for 

 specimen No. 152. (N. B. — This applies to all the specimens from 

 the Northern and Eastern United States, as well as Canada, so 

 determined by myself and others, prior to 1910.) 



Lethocerus obscurus Duiour = Belostoma americanum Uhl., not 

 Leidy, for specimen No. 109. 



Notonecta variabilis Fieb. = A", undulata Uhl., not Say, for speci- 

 men 17€. 



WOOD-BORING TRICHOPTERA.i 



By J. T. Lloyd, 

 Ithaca, N. Y. 



In the cold, alder-bordered streams of the uplands swamp near 

 Ithaca, N. Y., are found Caddis-worms whose case-making habits 



I Contribution from the Limnological Laboratory of the Department of Entomology in 

 Cornell University. 



