ART. 7 ORTHOPTEr.OTD INSECTS FR0:M SIBERIA CAUDELL, 5 



of tcnnerlana, states that the cerci of the male are armed, mesially with 

 a large obtuse inner spine, but Uvarov, who studied the type of that 

 species, relegates it to the synonymy under sedakorii and figures the 

 cerci of the latter as with the inner tooth decidedly basad of the mid- 

 dle, which agrees with the specimen here recorded, the cercus of which 

 is intermediate between those figured by Uvarov^ for G. Icraussi and 

 G. I'faussi, var. haicalensis. The range of variation in the cereal 

 shape as brought out by Uvarov in the above-noted figures would 

 seem to indicate that this character is scarcely more dependable for 

 specific differentiation than those of femoral armature, shape of sub- 

 genital plate, and others which that writer decries as unreliable or as 

 of no importance whatsoever. 



PARADRYMADUSA SIBER1C.4, new species 



This is a brachypterous form running out to this geuus but appar- 

 eritly not agreeing with any described species occurring in the region 

 covered by this report. The diagnostic characters allocating this 

 species generically are as follows: Anterior tibiae armed dorsally with 

 an outer apical spine; prosternum armed with a pair of short spines ; 

 posterior tibiae armed apically beneath with four spurs; tegmina not 

 exceeding the tip of the abdomen; pronotum moderately produced 

 posteriorly, without median carina; ovipositor curved gently down- 

 wards; plantula of posterior tarsus quadrate, less than half as long 

 as the basal segment of the tarsus; anal dorsal segment of the male 

 posteriorly emarginate and the cerci short. 



Male and female. — Head equal in width with the pronotum; vertex 

 as broad as the basal segment of the antenna, beneath meeting the 

 facial fastigium, dorsally narrowly sulcate longitudinally; eyes of 

 moderate size, in the male a little more circular and noticeably more 

 prominent than in the female; antennae long and slender. Pronotum 

 with the disk flat, without median carina, the lateral carinae very 

 rounded, almost obsolete anteriorly and bowed inwards anterior of 

 the middle, the disk thus broarder anteriorly and posteriorly, broad- 

 est behind; posterior margin of disk very broadly rounded, or, sub- 

 truncate, the anterior margin subtruncate or very slightly concave; 

 lateral lobes subvertical and well developed, being about as deep as 

 long, the margins slanting, the anterior ones very slightly so and the 

 posterior ones very much so; humeral sinus barely indicated; pro- 

 sternal spines short, varying from scarcely longer than the basal 

 width to decidedly elongate. Abdomen with the last dorsal segment 

 of the male posteriorly mesial 1}'^ roundly notched, in the female bent 

 downwards and concave; subgenital plate of the male as long as 



I Trans. Ent. Soc. Lond., 1924, p. 519, fig.s. C. D. 



