418 MR. a. C. CRICK OK A FOSSIL AMMONITE. 



The shortness o£ the elytra and wings gives this form an ap- 

 pearance different from the type, but the comparative develop- 

 ment of organs of flight in Orthoptera is too slender a character 

 on which to base a species. 



locustodea. 



Decticid^. 

 Pachttrachelus sp. 

 Seir, Aug. 16, 1898. 1 $ . 



This is very probably a new species, but it is impossible to 

 describe it without the male. It is close to P. striolatus, Pieb. 



Decticus assimilis, Keb. 



Seir. 2 $. 



Both these specimens are considerably larger than an example 

 in my collection from Tiflis, approaching more nearly to D. alhi- 

 frons, Fabr., in size and appearance. It has hitherto been 

 recorded by Brunner and Fieber from " Tiflis and Syria." 



Gryllodea. 



GrRTLLOTALPIDJi!. 



Grtllotalpa grtllotalpa, L. 



Seir, TJrmi. Several specimens, in all stages of development. 



Mole-crickets were always abundant, but at the same time I 

 never met the swarms which have been described from the neigh- 

 bourhood of Ispahan and Shiraz, where one intelligent observer 

 estimated their numbers at one to every square fathom over an 

 area of many square miles. — E-. T. Gr.) 



NOTE OJ^ A JUEASSIC AMMONITE. 

 By G. C. Crick, r.G.S., of the British Museum 



(Natural History). 



The only Jurassic fossil in Mr. E. T. Griinther's collection is an 

 Ammonite preserved on the surface of a small block of limestone 

 of reddish-brown colour. It consists of a portion of the outer 

 whorl that has been much flattened during fossilization, and of 

 the impression of the greater part of the rest of the shell. 



Jurassic Ammonites have been recorded from N.W. Persia by 



