102 MR. B. M'LACHLAN ON NliW FOllMS, ETC., 



PJiryqanea, Linnd (as restricted), has moderately narrow ante- 

 rior wings, tlie apex of which is rounded, oblique, or slightly 

 sinuate. In the typical species there is an additional apical cel- 

 lule in the $ in all the wings ; but in a section of the genus the 

 neuration is similar in both sexes, or as in the 6 of the typical 

 species (Trichostegia, Hag., Brauer) ; and in another section the 

 anterior wings have the like neuration in both sexes, but the 

 posterior wings possess an additional fork. The discoidal cell of 

 the anterior wings is elongate in all. 



Holostomis, Mannh., differs from Phryganea in its very broad 

 anterior wings. In the typical species, the neurati(;n of the an- 

 terior wings is alike in both sexes (similar to the typical forms of 

 JPJiryganea <S ), but the posterior wings of the $ have an addi- 

 tional fork ; a. MaclacMani, White, has the additional fork in all 

 the wings of the $ ; and on this account I transferred it to 

 JPTirygcmea ; but, in its form, it is evidently better placed hero. 



Neuronia, Leach, is scarcely to be separated from Holostomis : 

 the species are, as a rule, smaller, with the discoidal cell shorter ; 

 but possibly the two genera should be united under Neuronia, 

 which is the older name. The neuration of the anterior wings is 

 alike in both sexes ; but the posterior wings of the $ have an 

 additional fork. 



Agrypnia, Curtis, is distinguished by the narrow, Limnophili- 

 form anterior wings, the neuration alike in both sexes, the spines 

 of the tibiae and tarsi few in number, — at present one of the best- 

 defined genera. 



CoLPOMEBA, M'LacJilmi. 



1. C. SINENSIS, M'Lach. Trans. Ent. Sac. Lond. ser. 3, vol. i. p. 302. 

 Hub. North China. 



Phetganea, Idnne (restricted). 



= Tricliostegia, Kolenati. 



A. AUe unticcB et posticm finminis furca ajncali addita inslriictcB 

 {:=:.Phryf/anea, Hag., Brauer). 



2. P. JAi'ONiCA, M'Lach. Trans. Ent. Soc. Lond. ser. 3, vol. v. 

 p. 248. 



Hub. Japau. 



3. P. GRANDis, Linn. F. S. 379 ; Hag. Linn. Ent. vol. v. p. 363. — 



