8310 



Insects. 



L. tineoides, Step. ? Two specimens — one at Kcw, the other at 

 Bala; June 21 and August 18. 



L. bicolor, Curt. Willesden and Ruislip; very common at the lat- 

 ter locality in June. 



L. albifrons, L. Kew, common, June to August ; also at Bala Lake. 



L. pilosus, Mull. Hyde Park and Ruislip, June to August. 



Mystacides atra, Pict. Willesden, July and August. 



M. nigra, Pict. Kew and Bala Lake, August ; not common. 



M. quadrifasciata, Fab. Hyde Park and Ruislip, June and July. 



Setodes testacea, Curt. Ruislip, June to end of August. 



Rhyacophila dorsalis, Curt. Llangollen, August. 



R. obliterata, M'Lach. A new species, of which I took two male 

 specimens at Llangollen (N. Wales), on the 22nd of August, 1862. I 

 have two female specimens which may belong to this species, but I 

 am unable to speak positively. 



Glossosoma Boltoni, Curt, (fimbriata, Step.) Common at Llangol- 

 len, August. 



Agapetus fimereus, Step. ? Two specimens at Llangollen, August 18. 



Polycentropus pulchellus, Curt. Common near Willesden, in May 

 and June ; taken also near Kew. 



P. bimaculatus, L. Kingsbury and Willesden, July and August. 



Philopotamus (?) occipitalis, Pict. (subaurataj Step.) Four speci- 

 mens at Llangollen, August 22. 



Tinodes pallescens, Step. Willesden, Kew, and Bala Lake, in Au- 

 gust. 



Psychomia annulicornis^Pic*/. Very abundant on the banks of the 

 Thames near Kew, June to August. 



Hydropsyche angustata, Pict. One specimen near Kew, August 9. 



H. fulvipes, Curl. Willesden, Kingsbury and Kew, July and Au- 

 gust. 



H. Danubii, Brauer, Neurcp. Aust. p. 40. There is at present a 

 great deal of uncertainty as to the species of the genus Hydropsyche, 

 but 1 think 1 am correct in recording this species as new to Britain. 

 It is certainly not included in Dr. Hagen's ' Synopsis.' The following 

 is a translation of Brauer's description : — " Lower appendices of the 

 male dilated at the apex, yellow. Sheath-valves of the female diver- 

 gent, strongly springing outwards. Upper appendices of the male 

 closed, with a deep oval incision at the hind margin ; last segment of 

 the abdomen ou the top narrow, black, raised. Sheath-valves of the 

 female at the raised margin straight, cut short, brownish, covered with 

 bristly hairs. Wings gray, speckled with pale yellow. Sides of the 



