The Amekicas Entosiologist, for August, completes the first year and the first volume. It has been admirably conducted, and is worthy of the most extensive support. The present nuAiher contains a fine colored plate of the Eoyal Horned Caterpillar and Moth, life size, together with ahout , twenty other engravings. Commencing with the new volume the work is to he enlarged from 24 to 32 pages, the price remaining the same ; namely, $1 a year. Monthly. R. P. Studley & Co., Puhlishers, St. Louis, Mo.