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昆蟲 舉雜誌 第壹卷 第杳. 號 



in the basal area, one large darkish spot at the end of anal vein, and 

 another elongated blackish one at pterostigmatic region ； fork 4 much 

 shorter than its stalk. Hind wing intensely blue-black with an yellow- 

 ish band very broad and extended to apex, hence the apical blackish 

 band is absent. , 



Length of body 28 mm. 



" " fore wing 4.0 mm. 



Width of .... 15 mm. 



Length of hind wing 85 mm. 



Habitat : Kyoto, a single female specimen ； Mr. M. Suzuki coll. 

 This is one of the most map-nificient species of caddis nies known in 



the world. It is closely allied to Ph. MacLachlani (White), Ph. regina 

 (M'Lachlan), and Ph. reginella (Nakahara), but is distinguishable from 

 all these species in its hind wing being devoid of apical blackish band. 

 Remarks on the generic characters of Fhryganea and Neuronia ： 一 

 After some deliberation I have come to entertain the view that, while 

 a total amalgamation of the two genera, Phryganea and Neuronia. 

 seems not advisable, several of the species, e.g., Neuronia MacLach- 

 lani, N, regina, N. reginella, etc., may be removed altogether from the 

 latter genus and annexed to the former with advantage to the system. 



The characters made use of for distinguishing the genus Phryganea 

 from Neuronia have hitherto been principally the width of fore wing, 

 and length of discal cell in fore wing. These are however of such com- 

 parative characters and so gradual in the variation from one species to 

 another that they can hardly be utilized for the purpose. Fh. latipennis 

 is placed by Banks and Ulmer under the genus Phryganea, which is 

 defined so as to include the species with moderately narrow fore wing 

 and elongated discal cell in fore wing, but in reality this species has 

 rather broad fore vvinp- with the discal cell short. 



However I think that Phryganea and Neuionia may be dis- 



