126 Bibliographical Notices. Filago apiculata, G. E. Sm. spathulata, Presl. Gnaplialium norvegicum, Gunn. Hieracium rupestre, All. pallidum, Biv. oreades, Fr. saxifragum, Fr. atratum, Fr. caesium, Fr. dovrense, FY. gothicum, Fr. corymbosum, Fr. Orobanche Picridis, F. W. Schultz. Teucrium Botrys, L. Statice Dodartii, Gir. Anacharis Alsiuastrum, Bab. Simethis bicolor, Kunth. Luzula Borreri, Bromf. Sparganium minimum, Fr. Potamogeton trichodes, Cham . Naias flexilis, Rostk. Carex brizoides, L. (Ederi, Ehrh. Apera interrupta, Beauv. Triticum laxum, Fr. Lolium linicola, Sond. Cystopteris dentata, Sm. And the Charae. Nasturtium anceps. Brassica Cheiranthus. Viola lactea. Cerastium atrovirens. Hypericum maculatum Prunus insititia. domestica. Rubus fastigiatus. tenuis. Borreri. Leightonianus. Lingua. humifusus. Schleicheri. Carduus Forsteri. Hieracium Schmidtii. Linaria italica. Atriplex microsperma. prostrata. Species Suppressed. Urtica Dodartii. Ulmus campestris. major. carpinifolia. glabra. stricta. Salix decipiens. Russelliana. amygdalina. rugosa. ferruginea. sphacelata. cotinifolia*, &c. propinqua, &c. radicans, &c. retusa. Zostera angustifolia. Poa montana. Remarks on " Hymenopterologische Studien by Arnold Foerster, jstes Heft, Formicarise, Aachen, 1850." By William Nylander, M.D., of Helsingfors. Having had an opportunity of seeing the above-named treatise by M. Foerster, on the species of Formicidse inhabiting the German pro-vinces on the Rhine, in which he has done me the honour of be-stowing special attention on my essay on the natural history of this family f , I have thought that the expression of my opinion concern-ing the determination of some species in his work would not prove altogether unserviceable. As Mr. Walker has at the same time kindly * The changes of nomenclature render it impossible to extricate singly the species suppressed in this and the two next groups. f Adnotationes in Monographiam Formicarum borealium, 1846; Addi-tamentum in Monogr. Form. bor. 1846; Additamentum alterum inMonogr. Form. bor. 1847.
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