39 



NOTOBLATTITES SUBCOSTALIS, sp. nov. 

 Plate 6, fig. 1, and Plate 7, fig. 1. 



This species is represented on Plate 6. fig. 1. by a nearly complete 

 and very w r ell-preserved tegmeii (Spec. 24a) and on Plate 7, fig. 1, 

 by two whole specimens at rest in natural positions (Spec. 25a), 

 together \vith a portion of another wing. In the well-preserved 

 individual, Spec. 24a (Plate 4, fig. 1), the nature of the cross- venation 

 can be fairly well made out. The costal cross-veins were strong 

 and placed fairly wide apart. At the base, the cross-venation is a 

 dense network of small polygonal cells, very irregular. This is 

 figured between Sc and E, but omitted from the anal area, which 

 is, however, actually covered with a similar network. Further distacl 

 the venation becomes simplified, tending to develop into simple 

 series of parallel and slightly oblique cross-veins, as shown in the 

 figure. 



On Spec. 25a (Plate 7, fig. 1), which is a piece of very dark clay 

 ironstone about 4| by 3| inches, an almost complete individual is 

 shown in the position of rest, measuring 62 mm. long by 34 mm. 

 wide ; head, prothorax, and part of the tips of the hi iicl wings are 

 missing. The position of the head is covered by portion of another 

 tegmen laid crosswise and projecting away towards the right, where 

 it is broken off about halfway. This fine individual appears to have 

 been a female. Just above and to the left of it lies another partially 

 complete impression measuring, however, only 50 mm. long by 24 

 mm. wide, and thus probably a male. The main veins and costal 

 cross-veins in the three individuals are very clear. 



MEASUREMENTS : Spec. 24o. Length 46 mm., breadth 21 mm. 

 The tip is missing. 



TYPES : Spec. 25a (Plate 7, fig. 1). TYPE-COUNTERPART : 

 Spec. 256 (almost complete male and female). CO-TYPE : Spec. 

 24a (Plate 6, fig. 1). CO-TYPE-COUNTERPART : Spec. 246 (right 

 tegmen). (B. D. Coll.) 







OBS. : This insect, which is without doubt a cockroach, 

 nevertheless approaches the Protorthoptera in the great length of 

 its subcosta and the comparative straightness of its main veins. 

 It appears to have been closely allied to several of the numerous 

 Carboniferous forms, notably Elaphroblatta ensifera, Brongniart, 

 figured by Handlirsch.* 



* Loc. cit. Atlas, plate xix, figs. 17-18. 



