Manchester Mono'irs, Vol. Ixi. (1917), No. "l. 23 



little over twicc^ as lony as broad, sub-costal area strap-shaped ; 

 radius confined to outer half of wing, radial sector much 

 branched. Alcclian vein curving down to the inner end of apex 

 of wing, and sending off a series of straight outer branches, 

 whose divisions end in the inner half of the wing apex. 

 Cubitus occupying almost the whole of the free inner margin, 

 its distal branches reaching to the apical margin of the wing. 

 Anal area extending over one-third the length of the wing. 



In the branching of some of the distal divisions of the 

 sub-costa, there is a resemblance to what obtains in Necymy- 

 lacris, but in the latter, the sub-costal area is markedly triangu- 

 lar. A comparison of the two wings with blattoids described 

 and figured by Brongniart from the Stephanian of Commentry 

 is instructive. 



Brongniart figures a number of forms under the name 

 of " Etohlattina sp." and of these, four at least are now classed 

 as Fhylloblaita by Handlirsch. That author has named the 

 species as follows: — ■Pliylloblatt'ina agnnsi (Brong. Insectes 

 Fossiles des Temps Primaires, t.48, Fig. 7); P. ^Brongniarli 

 (op.cit. t.48. Fig. 4): P. Stefhanensis (op.cit., t.46, Fig. 5); 

 P. reniformis (op.cit., t.47, Fig. g). 



To these Handlirsch has also added two more species 

 from the Stephanian of Commentry, viz. : PJiylloblatta gallica 

 (Fossilen Insekten, p. 205, pi. XXL, Fig. 17), and P. ahitacea 

 (op.cit. p. 206, pi. XXL, Fig. 21). 



More recently, M. Pruvost (Les Insectes Houillers du Nord 

 de la France. Annales de la Societe Geologique du Nord, 

 191 2) has described three new species of Phylloblatta from the 

 neighbourhood of Lens and Lievin. 



The wings now under consideration differ in many details 

 from all of these, and in the present state of our knowledge, 

 these differences are sufficient to rank as of specific value. 



It is therefore desirable to give these wings a name, and 

 we adopt that of Stirrupi, in honour of Mark Stirrup. 



Type. — .Specimen in the Manchester Museum, Mark Stirrup 

 Collection; Register No., 1^5,551. 



Horizon. — Stephanian. 



Locality. Commentry (Allier), France. 



Incertie sedis. — The ninth specimen in the collection is one 

 which shows traces of a small head, broad thorax, and narrow 

 abdomen, with fragmentary legs. No traces of wings are dis- 

 tinguishable. Its character and relationships cannot be deter- 

 mined. 



The preparation of enlarged photographs, which have alone ren- 

 dered the study and description of these insects possible, has been 

 assisted by a Royal Society Grant. The photographs have been pre- 

 pared by Mr. J. W. Tutchcr. 



