banks: new neukoptekoid insects. 19 



LiMNEPHILIDAE. 

 LiMNEPHILUS SANSONI, Sp. nOV. 



Type.— M. C. Z. 10,069. Alberta: Banff. N. B. Sanson. Three 

 specimens. 



Group of L. comhinatus, but more heavily marked with dark. 

 Yellowish, with gray or yellowish hairs; abdomen black, venter paler; 

 front tibiae with mostly yellow spines. Wings yellowish; fore wings 

 heavily marked with brown behind and on the outer part, and a very 

 dark spot at stigma; the two oblique spots on middle across cubitus 

 are very distinct, a large clear spot in base of apical and first sub- 

 apical cells, and another over apical parts of fifth apical and first and 

 second subapical cells; a dark streak along the second anal vein. All 

 the dark brown is broken by rounded hyaline spots. Venation as in L. 

 comhinatus, but the fore wings not as elongate. The superior append- 

 ages of female are similar to those of L. comhinatus, but the intermediate 

 ones are shorter than in that species, and more acuminate. In the male 

 the superior appendages seen from the side slope more behind, and the 

 lower inner edge not armed with such large teeth as in L. conibinatus; 

 the intermediate superior appendages are much larger than in L. 

 covihinatus. From L. oslari the female differs in the much longer 

 superior appendages, and in the male the superior appendages are 

 nearly the same shape, but in L. oslari they are very heavily armed 

 with teeth on the inner surface toward tip, while here they are scarcely 

 armed at all; in L. oslari the intermediate superior appendages are 

 smaller and with slightly curved tips. (Plate 1, fig. 8). 



Expanse 34 mm. 



Most of the specimens seen appear much like normal L. externus, 

 but not closely related to that species. 



LiMNEPHILUS ROTUNDATUS, Sp. nOV. 



Type.— M. C. Z. 10,070. Calif.: Lake Tahoe. W. K. Fisher. 

 One specimen. 



In general marked as in L. gravidus Hagen, the tibiae and tarsi 

 being banded with dark; the fore wings rather more heavily marked 

 than the normal L. gravidus, but on the same plan; the oblique pale 

 spots across the cubitus being distinct; the outer margin of fore wing 

 nearly truncate. Venation like that of L. gravidic^. The female 

 differs at once from L. gravidus, L. vastus, and L. interviedius in having 



