1 6 Bolton, ''Mark Stirrup"' Collection of Fossil Insects. 



The species appears to be a new one, and we attach to it 

 the name of Monsieur M. Leriche, who has added considerably 

 to our knowledge of the insect fauna of the Northern French 

 Coal Measures. 



Type. — Specimen in the Manchester }*Iuseum, Mark Stirrup 

 Collection; Register No., L5,552. 



Horizon. — Stephanian. 



Locality. — Commentry (Allier), Central France. 



FJiylloblatta Brongniartu Handlirsch. PI. I\^. ; figs, i — 5. 



Etoblattina sp. Brongniart, Insectes Fossiles des Temps 

 Primaires, t.48, Fig. 4, 1893. 



This specimen is one of more than usual interest, owing to 

 the fact that a portion of the hinder pair of wings, as well as 

 the tegmina are preserved. Usually the hind wings are absent, 

 or so obscured by the overlying tegmina as to be impossible 

 of elucidation. A circular area has been impressed upon the 

 base of the tegmina, and may indicate where the pronotum lay. 

 If such were the case, the pronotum was unusually large. The 

 right tegmen and right hinder wing lie with their lower surfaces 

 upwards, those of the left showing the upper surfaces. The 

 hinder pair of wings appear to have been imperfect before en- 

 tombment, whilst the tegmina have lost the apical portions since 

 the specimen was found. This at least may be inferred from 

 the presence of a broken edge w^hich cuts across the two tegmina, 

 and still retains traces of cement. No definite portions of the 

 body or legs are distinguishable, although an ill-defined mass 

 lies in front of the right hind wing. 



Tegmina. — The right tegmen is 29 mm. long, and has lost 

 its outer third, whilst of the left tegmen little more than the 

 basal third is present. The latter shows but minor points of 

 difference, the chief being in the proximal twigs of the sub-costa, 

 two of which fork three times, whilst those of the right in the 

 same region are undivided. It will be sufficient therefore if 

 the right wing is described in detail. 



Right tegmen. — The costal margin is regularly and gently 

 convex, merging distal ly into the blunted rounded apex of the 

 wing. The sub-costa is a strong vein, widely separated from 

 the costal margin, and parallel to it. It gives off a series of 

 simple twigs, three of which are forked. The whole series of 

 twigs, sixteen in number, pass obliquely outwards to the costal 

 margin. The sub-costal, with its numerous divisions, occupies 

 four-fifths of the outer margin. The radius arises close to the 

 base of the sub-costa, and gradually diverges from it in its 

 course to the middle point of the wing apex. It gives off two 

 forwardly directed branches, both of which fork before reach- 

 ing the broken edge of the wing. Whether additional forking 

 takes place further out cannot be determined, owing to the 

 absence of the apical portion. 



