268 APPENDIX TO THE CATALOGUE OF TH15 INSECTS 



10a. H. oBscuRus, Sturm. 



H. umbrosus'? Steph. Illust, Mand., ii., 55. 



Rare; Gosforth, and Prestwick Car. — T. J. B. May — July. 



This appears to be a very local species, and hitberto only taken 

 in a small mountain tarn, near Killarney, in Ireland. — 2\ J. B. 



105. H. GRANULARIS, Linii. 



Stejyh. Illust., Mand., ii., 58. 

 Tolerably abundant in pools and ditches, at Boldon Flats. — 

 T. J. B. May— June. 



10c. H. GEM IN us, Fah. 



Steph. Illust., Mand., ii., 57. 

 One specimen, from a pond at Gosforth. — T. J. B. August. 



13. H. MEMNONius. Gosforth, Boldon Flats, and Whittle Dean. — 

 T. J. B. May— September. 



17. H. RivALis. Wooler Water. — J. II. 



59. CoLYMBETES. 



3a. C. BiSTRiATUS, Beirj. 



Steph. Illust., Mand., ii, 71. 

 In a moss, on Whitsunbank Hill. — J. II. July. 



ia. C. FONTiNALis, Steph. 



Steph. Illust., Mand., ii., QQ. 

 In a clear stream, on Hedgehope. — J. H. July. 



5. C. CHALCONOTUs. Dunstouborough Castle, and Whitsunbank 

 Hill.— J. H. 



G. C. AFFiNis. Boldon Flats, and very abundant, in a pond, at 

 Gosforth.—^. J. B. May— July. 



7. C. PALUDosus. Xear Dunstonborough Castle. — J. H. 



8. C. FEMORALis. Gosforth and Boldon Flats, in abundance. — 



T. J. B. May— October. 



Sa. C. DisPAR, Bold. 



Zoologist, 1849, Supplement, xxiv. — Tyneside Nat. Club 

 Trans., i., 277. 

 Boldon Flats.— T'. J. B. May— June. 



