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IX.—A Century of unrecorded local Coleoptera, with a Descrip- 
tion of a new Colymbetes. By Tuomas Joun Boup. 
[Read at the anniversary meeting of the “‘ Tyneside Naturalists’ Field Club,” 
April 21st, 1849. ] 
1. Dyscuirius mnEvs, Zeigler. Two specimens, Cambois, May. 
—Mr. John Scott. 
2. NotapHus oBLiquus, Sturm. One specimen, found on the bed 
of the lake at Gosforth, in August. 
3. Hyproporus cranuLaris, Linn. Tolerably abundant in pools 
and ditches, Boldon Flats, May and June. 
4. H. gemrnus, Fab. One specimen from a pond at Gosforth, 
August. 
5. CotymBEtEs (AGABUS) DIsPAR, Mihi. 
Zoologist, January, 1849, Supp. xxiv. 
Ovatus, fortiter convexus, postice attenuatus, nigrofusco- 
subeeneus, subtiliter reticulato-strigoso-subpunctatus ; ore, 
labro, frontis thoracique marginibus, maculis duabus ver- 
ticis, palpis, antennis, pedibusque rufo-ferruginers ; ely- 
trorum marginibus basique plerumque, late testaceis. Long. 
Corp. 3-33 lin. | 
Male.—With somewhat of the habit of C. paludosus ; ovate, 
very convex, glossy, nigrofusco-subeneus, finely reticulate—stri- 
gose—subpunctate, more especially on the head and thorax. 
Head scarcely convex, with two deep frontal impressions between 
the antenne, and an obscure transverse vertical depression ; the 
mouth, labrum, head in front, two large spots on the vertex, the 
palpi and the antenne rufo-ferruginous ; the tips of the palpi 
and the apices of the joints of the antenne, those towards the 
base excepted, narrowly dusky. Thorax short, transverse, very 
considerably narrowed anteriorly, posteriorly not much nar- 
rower than the base of the elytra ; widely emarginate in front, 
the anterior angles reaching to the eyes, and closely embracing 
