148 TRICHOPTERA. 



last abdominal segment is produced into a broad flap, which 

 is bent down, and covered with short black scabrous bristles; 

 viewed from above, the upper margin has the appearance of 

 being deeply and roundly excavated, with a prominence on 

 either side ; the superior appendages are \ery large and 

 hollow, broadly and obtusely spoon-shaped, standing out 

 almost at right angles from the body; the inferior appendages 

 are straight, truncated at the extremity, which is furnished 

 with a tuft of long hairs ; the intermediate appendages are 

 straight, testaceous in the basal half, but with a black, some- 

 what mucronate apex. I have not yet seen the female. 



For this interesting addition, we are indebted to my friend 

 and co-worker Mr, P. C. Wormald, who took a single male 

 example at Ruislip Reservoir, Middlesex, in September, 

 1862 ; this I identified by a specimen sent to the British 

 Museum by Dr. Hagen. 



Ijimnephilus Jiavescens, Stephens. In Stephens' collec- 

 tion there exists but a single male type of this species, which 

 Dr. Hagen considered might be identical with his L. ignavus 

 (Annual, 1859, p. 83, 24). That gentleman has presented 

 me wdth an example of his species, and I have no hesitation 

 in saying that it is assuredly distinct from L. Jiavescens. It 

 differs much in general appearance, and the character of the 

 appendages is altogether different. L. Jiavescens is an insect 

 with very pale stramineous fore-wings, entirely without 

 markings, and, excepting that it is somewhat larger, much 

 resembles some varieties o^ centralis, Curtis, to which it also 

 bears some relationship in the character of its appendages. 

 At present it is a rather obscure species, but I hope that I 

 may be able, by the sight of more specimens, to clear up the 

 doubtful points. 



Limnejjhilus irroratus, Stephens. In the Annual for 

 1862, p. 28, I mentioned that this species was probably 



