ENTOMOLOGICAL EXCURSION. 55 



previously pretty well stored with them. When we had reached 

 some hundreds of yards below the summit, we found the heavy 

 cloud which had enveloped it had completely disappeared, and 

 all above us was clear blue sky. The country below us was 

 also visible in places, through openings in the clouds. The 

 green lake, so remarkable, as many of our readers may recollect, 

 for its deformed fishes, presented a curious appearance: — a 

 stratum of rain-clouds was passing over it, although far below 

 the spot where we stood ; and its whole surface was in a kind 

 of simmer with the heavy rain, at a time when the sky above 

 us was beautifully clear and cloudless. In the Coppermine- 

 lake we exercised our water-net, and took three water-beetles, 

 Hydroporus Davisii, Colijmbetes fontinalis (a singular variety, 

 without the usual ochreous spots on the elytra), and another 

 Colymbetes resembling the very common C. bipustidatus, but 

 differing in some respects ; and, as we cannot find it described, 

 we have given its characters below, and purpose assigning to it 

 the name Snowdon'ius ; the name iiigro-cBneus, which precisely 

 describes its colour, being pre-occupied.*^ After leaving the 

 lake, we found the Carabi and Steropi running about in great 

 abundance, both in and after the rain, which now recommenced; 

 they were evidently preying on worms, which were tempted 

 by the moisture to make their appearance. Under stones 

 we found Elater riparins, and a few, not uncommon, Coleoptera. 

 In our descent, we also remarked a beautiful rainbow, which, 

 though in the evening, and therefore a goodly arch, reached 

 not to the sky in any part, but was wholly visible against the 

 side of a mountain. On our return to Capel Curig, we were 

 completely overcome with wet and fatigue, and were right 

 glad to get rid of our wet clothes and go to bed. 



10th. Breakfasted early, and walked through the Cwn Glassor 

 Pass of Llanberris : on the road took O'tstrus bovis, Carabus 

 glabratus, ByrrJius sericeus, Elater cupreus, 8fc. The morning 

 was fine and warm ; the air, clear. Snowdon was occasionally 

 visible ; but there were some clouds about, and always below, 



** Colymbetes Snowdonius, Newm. nigro-aneus, Icevis, capite postice punctis 

 duohus ferrugineis. 



C. bipustulato simillimus, at minor convexior ac postice angustior. Maris elytris 

 striis obsolete elevatis. Totus nigro-aeneus, antennis pedibusque piceis. 



Variat interdum, (exemplariis crudis) elytris piceis. 



Habitat in montis Snowdon aquis ; Junii diebus frequens. 



