NOTITATES ZoOLOaiCAE XXX. 1023. 59 RECORDS AND DESCRIPTIONS OF ORTHOPTERA FROM NORTH-WEST AFRICA. By B. p. UVAROV. (Plate I.) THE present paper is based mainly on a collection of Orthoptera made by Lord Rothschild and Dr. E. Hartert on their several expeditions to different parts of Sahara, but I thought it convenient to include also a few records from some other sources, particularly from a collection of Dr. Auguste Cros, Mascara, Algeria, and from the British Museum collection. A considerable part of the first-mentioned collection has been already worked out by I. Bohvar and the results have been published in this magazine, ' but I cannot agree with all his identifications after a study of the specimens named by him, because of the reasons stated under corresponding species ; the species recorded by Bolivar under the names, in my opinion, correct, are not mentioned by me. As regards the part of the collection which came to me unnamed, I do not think it necessary to record some more common, widely distributed, and well-known species, but I include all those which are of interest on account of synonymy or distribution, besides those which are new to science or insufficiently known. As may be seen from the paper, there exists a good deal of confusion in systematics and synonymy even of some very common species, and the collections studied presented good opportunities for revising some cases of that kind. Several very interesting novelties described in the paper give us a new proof that the fauna of Orthoptera of N.W. Africa is still very inadequately known. My most sincere thanks are due to Lord Rothschild and Dr. Hartert for giving me the opportunity to study their interesting collection, and to Dr. A. Cros for the collection from Mascara. The types of new species described in the paper are in the British Museum. The reiJort on the collection would not be half as complete without illustra-tions, and I am most grateful to Lord Rothschild who provided for the same. Fam. JfflAITTIDAE. 1. Iris oratoria (L.). (Text-fig. 1 B.) Batna, Algeria, 27 . viii . 1910 (British Museum) ; Azazga, Kabylie, 17 . ix . 1920 (Rothschild and Hartert). The tj^ical locality for this species is Algiers, because Linne described it from the specimens received by him from Brander, Swedish Consul at Algiers from 1753 to 1765 (see Catal. of the Linnean Specimens, etc., by B. D. Jackson, Suppl. to the Proc. Lin. Soc. of London for 125th Session, 1912-13, p. 10) ; this fact should be kept in mind in case it would be found necessary to separate ' NOVITATES ZOOLOQICAE, XX. 1913, pp. 603-15.