50 



[March, 



7. Plafycleis hnrri, sp. n., 6 • 



(^ . P/. 6iVo/o?- Phil valde atfinis, sei statura niajore. Pallido viiidis vel 

 flavescens. Proiiotum supra iufuscatum, planiusfuluin, carinis lateralibus 

 obtusis, subparallelibus (fuuice ac postice vix divergentibiis), carina mediaiia 

 oil tertina parte postica t mtum perspicua. Elytra abdoniine parum breviora, 

 L}'alina, apice lati-siiuo, rotundato. Alae aboitivae. Seiimentum aiiale pos- 

 tice rotiindato-excavatum, longe pilosuni, inat<>iiie portico ])roruiide ac late 

 triaiig-iilariter excise, lobis acutis triaDguliiribus. Cerci longi, parum incurvi, 

 apicem aiile dento piano, latu armati. Lamina subuenitalis medio subcarinuiata, 

 postice rotundato-triangulaiiter excisa, sty lis longis. 



Lougitiido corporis 24-26 mm. 



,, proHoti 7-7'5 ,, 



,, elytroriim 14-15 ,, 



„ feiiiori post 24-25 „ 



Patria. Transcaucasia, prov. Elisavetpol : Geok-Tapa, 22.vi.15, 1 cT 

 (ill. Burr leg.), 30.vi.lo, 1 6 (A. Shelkovnikov leg.). 



This peculiar Plafycleis was taken by Dr. Malcolm Burr in Geok- 

 Tapa, and has been named by him Locusta schelkovuikovi, sp. n. (in litt. 

 — in the collections of the Caucasian Museum at Tiflis), it being very 

 like a Locusta at first sight. I have great pleasure in naming the insect 

 after him, as he has done so much for our knowledge of the Orthoptera. 



P. hurri ought to be included in the same group as P. roeseli 

 Hagenb. and P. hicolor Phil., but it is very easily distinguished from 

 those insects by the larger size, different coloration, and the form of cerci. 



8. Gri/Uus tartarus obscurus, subsp. n. 



A formH typica differt: corpore nigro, griseo-liirsuto ; capite nigro fasciis 

 duobiis traiisversis pallidis ornate ; pronoto pedibusque t'uscis, iudistiiicte pullido 

 irroralis. 



Patria. Ciscaucasia orientalis : vallis tl. Manytch et Kuma ; Trans- 

 caucasia orientalis : Mtskhet ; Transcaucasia meridionalis : Kaghyzman ; 

 Persia septentrionalis : Maraga. 



I have already stated * that specimens of Gri/llus tartarus from 

 the North-Eastern Caucasus differ from the typical form (from Turkestan 

 and Transcaspia) by their much darker colour. The same character also 

 applies to the examples from Transcaucasia and Northern Persia, and I 

 propose to regard them as a distinct geographical race of G. tartarus. 



London : 



October 1920. 



* Bull, dii Musce du Caucase. ix, 1915, p. IS. 



