98 HYDKOPSYCHID^S. 



1. CYRNUS UNIPUNCTATUS. 



Nigricans ; antenna et pedes fulva ; alee fuscescentcs, venis satura- 

 tioribus, anticce macula albo-hyalina. Long. 2^ 3 ; alar. 

 lin. 



Cyrnus unipunctatus, Steph. III. Brit. Ent. Mand. vi. 175, 1. 

 a. England. Presented by F. Walker, Esq. 



2. CYRNUS PULCHELLUS. 



Fuscus ; antenna ochracece, fusco annulate ; pedes fulvi ; ala 

 ochraceo-fuscce, anticce ad apicem pallide luteo-irroratce punc- 

 toque discali albido. Long. 3 ; alar. 6 7 lin. 



Cyrnus pulchellus, Steph. III. Brit. Ent. Mand. vi. 175, 2. 

 England. 



3. CYRNUS URBANUS. 



Gracilis, ochraceus ; caput et thorax supra fusca; palpi nigrican- 

 tes ; antenna fusco annulatce ; alee angustce, immaculatce. 

 Long. 2 ; alar. 5j 6 lin. 



Hydropsyche urbana, Pictet, Rech. Phryg. 215, 20, pi. 19, f. 13. 

 Cyrnus urbanus, Steph. III. Brit. Ent. Mand. vi. 175, 3. 

 Philopotamus urbanus ? Ramb. Hist Nat. Ins. Neur. 503, 5. 



England. 



4. CYRNUS UNICOLOH. 



Subgracilis, ochraceus ; caput et palpi fusca ; alee hyalince, irides- 

 centes. Long. 2 ; alar. 6 lin. 



Hydropsycbe unicolor, Pictet, Rech. Phryg. 218, 27, pi. 20, f. 5. 

 Cyrnus unicolor, Steph. III. Brit. Ent. Mand. vi. 176, 4. 



England. 



Genus 2. POLYCENTKOPUS. 



Antennae alls non longiores. Tibiae anticae tricalcaratae. Alae 

 antica? venis transversis paucis. 



Polycentropus, Curt. Phil. Mag. iv. 213 ; Brit. Ent. xii. 544 ; 

 Steph.; Westw. 



