The two species described below live in the burrows of the common prairie dog.Saprinus cynomysi n. sp.Length (apex of thorax to apex of suture) 6-6.2 mm.; width 5 mm. Black, strongly shining throughout.Head moderately finely and sparsely punctate, the punctures becoming very fine and sparse at middle of occiput. Supraocular stria distinct, extending across the front.