Fig. 10. Nerve cells from near a lateral branch from the radial band. x450. [Illustration] Ants from the Claremont Laguna Region This list includes ants collected chiefly in 1917. All determinations are by Dr. W. M. Wheeler. _Novomessor andrei_ Mayr. red var. Also some dark. Claremont. _N. pergandei_ Mayr. Medium, dark colored. Claremont. _Pogonomyrmex californicus_ Buckley Claremont. _Pheidole longipes_ Pergande Claremont. _Pediole_ sp. Claremont. _Crematogaster lineolata_ Say. Subsp. _californica_ Emery. Claremont. _C. l._ Say. subsp. _corctata_ Emery. Claremont. _Solenopsis molesta_ Say. var. _validiuscula_ Emery. Claremont. _S. geminata_ Fab. var. Claremont. _Liometopum occidentale_ Emery. Mts. and Claremont. _Iridomyrex pruinosus_ Roger var. _analis_ Ern. Andre. _I. humilis_ Mayr (Argentine ant) Claremont. _Dorymyrmex pyramicus_ Roger _var._ Claremont. _Prenolepis imparis_ Say. Below Aliso canon, Laguna Beach and Claremont. _Tapinoma sessile_ Say. Laguna Beach. _Myrmecocystus melliger_ Forel var. (Honey ant) Claremont. _M. mexicanus_ Wesm. sub sp. _mojave_ Wheeler (Honey ant) Claremont. _Formica rufibarbis_ Fb. var _occidua_ Wheeler. Claremont. _F. cinerea_ Mayr. subsp. _pilicornis_ Emery. Claremont. _Camponotus (Myrmoturba) maculatus_ Fb. subsp. _vicinus_ Mayr. _var. luteangulus_ Wheeler. Claremont. W. A. H. (_Contribution from the Zoological Laboratory of Pomona College_) JOURNAL OF ENTOMOLOGY AND ZOOLOGY--_Advertising Section_ _The_ Journal _of_ Zoological Research _Edited by WALTER E. COLLINGE, M. Sc., F. L. S., F. E. S. The Gatty Marine Laboratory The University, St. Andrews, Scotland_ The subject matter is strictly confined to original zoological research--systematic and anatomical. Fully illustrated by lithographic plates and text figures. Each volume will consist of 4 parts, price $5. _All subscriptions should be forwarded to_ Messrs. Dulau & Co., Ltd. 37 Soho Square, London, W., England GRIFFITH Incubators [Illustration: A simple, well constructed bacteriological incubator] GAGE--The Microscope =An Introduction to Microscopic Methods and to Histology= By SIMON H. GAGE. Twelfth Edition. Entirely rewritten, and with many new illustrations. Price, postpaid, $3.00. This work aims to give help to everyone who uses the microscope, whether he is a beginner or an advanced worker. COMSTOCK--A Manual for the Study of Insects By JOHN HENRY COMSTOCK, Professor of Entomology in Cornell University, and ANNA BOTSFORD COMSTOCK, member of the Society of American Wood-Engravers. 8vo. cloth, IX. +701 pages, 797 figures in the text, and six full page plates. Nearly all of the figures were engraved especially for this work. Postpaid $4.07; net $3.75.