Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis Author Linnaeus, Carolus text 1758 Laurentius Salvius Stockholm https://archive.org/download/mobot31753000798865/mobot31753000798865.pdf book 2C6327E1-5560-4DB4-B9CA-76A0FA03D975 https://doi.org/10.5962/bhl.title.542 3922206 Alca torda [ spec. nov. ] A. rostri sulcis quatuor, linea utrinque alba a rostro ad oculos. It. gottl. 286. Fn. svec. 120. Alca. Clus. exot. 367. Worm. mus. 363. Will. orn. 243. t. 64. f. 1. & t. 65. f. 2. Raj. av. 119. Alb. av. 3. p. 90. t. 95. Habitat in Europae borealis oceano. Plures ova solitaria simul in antro rupium pariunt, conjunctis viribus alternatis excludunt, unica excubias agente; erectae incedunt.