84 [April, 



base black, and a pale streak along tlie basal quarter of tbe outer side. Wings 

 faintly bluish basalh'. 



In tlie paratypic male tlie frontal ridge in its lower part is more raised 

 as in tbe female and almost reaching the clypeus, but still its margins are far 

 less raised than in the typical coerulans. 



2 (type). S (paratype). 



Length of body 25 mm. 16 mm. 



,, pronotum 5 3'5 



„ elytra 26 16 



„ hind femora 1.3 9 



These three specimens have been previously named by me in my 

 paper on the Orthoptera of Mesopotamia * as ^S*. coerulans L., but when 

 I revised the whole material of the genus Sphingonotus in the British 

 Museum, I came to the conclusion that there is more than one species 

 (with additional geographical races) of SjyJiinffonofus with hyaline 

 wings in the deserts of the Western Asia. Tims, the typical 

 S. coerulans coerulans seems to be confined to the more northern parts 

 of the country, and Dr. Buxton's collection contains a long series of 

 very typical specimens, taken at the Southern coast of Caspian Sea — 

 at Enzeli, Gilan, and Menjil. The series of specimens from Baghdad 

 and Amara proved to be ^S'. meclteriae Krauss, described from the 

 Algerian Sahara. One specimen from Enzeli belongs to ^S*. ruhescens 

 Walk., which is probably identical with S. aegyptiacus Sauss., and 

 represents a very good species -ft^hich w-ill be redescribed by me else- 

 where ; there is also one specimen of it in Dr. Buxton's Palestine lot, 

 taken at Amman, Transjordania, alt. 2500 ft., 21. vii. 1921. A small 

 lot of Mesopotamian Orthoptera sent in by Mr. Y. Ramachandra Rao 

 included one more species of that group taken at Baghdad, 15. vii. 1920 

 — 8. vosseleri Krauss, also described originally from the Algerian 

 Sahara. It is obvious that the Asiatic species of Sph/'nc/onofus \vith 

 bj^aline wings should be revised on the basis of large series of specimen s. 



2. Sphingonotus angulaiiis, sp. n. (Fig. 1.) 



2 . Similar in size and the pattern of wings to Sphinf/nnotus callosus Fieb., 

 but differing from it in the shape of the head, sculpture of the pronotum, and 

 the shape and position of the discoidal intercalate vein. 



Antennae distinctly longer than the head and pronotum together, very 

 slightly flattened, with the apex somewhat attenuate. Face with scattered 

 puncturation, in profile somewhat reclinate ; frontal ridge in profile rotundato- 

 promiuent between the antennae, feebly, but distinctly depressed just below 

 the ocellum, practically straight aud distinctly reclinate in the rest; when 



* Journal of the Bombay Nat. Hist. Soo., xxvii, No. 1, p. 80i, No. 22 (1921). 



