NO. 2119. BRITISH FOSSIL INSECTS— COCKERELL. 475 



3431, a fragment of the middle of a wing, is also referred to H. 

 parallela. 

 Plesiotypes.—Csit. No. 61393, U.S.N.M. 



CALOBLATTINA LIASINA (Giebel). 



Giebel's species was evidently based on the same figure^ as Hand- 

 lirsch's Actinohlattula hrodiei. The latter consequently falls as a 

 synonym. 



PANORPATAE. 



ORTEOPHLEBIA COMMUNIS Westwood. 

 Plate 60, fig. 8. 



This, the type of the genus, is represented by Nos. 3455, 3456, 

 3457, 3458, Lacoe Collection, from the Lias, the last three from 

 Binton. The two primary branches of the radial sector fork at 

 nearly the same level, but the upper fork is a little more basad, varying 

 to considerably more. The anal field was not very clearly figured by 

 Westwood, so I give a new figure (from No. 3458) showing the details. 

 There is a rather close general resemblance to Panorpa. The media 

 gives rise to four branches, of which the fh'st is again branched; 

 Panorpa has three branches, of which the first is again branched. The 

 radial sector always has four branches leaving its upper division. 

 In two species which Handlirsch describes from Mecklenburg there 

 are only three such branches; this is also true of the English 0. 

 intermedia and 0. lata, which appear to be identical. 0. similis is 

 doubtfuUy separable from 0. communis. It is not impossible that aU 

 the Lias species of OrtJiopMetia can be reduced to two, 0. communis 

 and 0. intermedia, but it is not desirable to attempt such a reduction 

 in the present state of our knowledge. 



Plesiotype.—Csit. No. 61394, U.S.N.M. 



NEUROPTERA. 



NEMATOPHLEBIA, new genus (Sialidae). 



Posterior wing (apparently) long and narrow, with straight costa 

 and rounded apex; both specimens before me are longitudinally folded 

 in the middle, and doubtless folded thus in life, after the manner of 

 modern Sialids. Subcosta running parallel with and close to costal 

 margin, with which it is connected by vertical (not or little obUque) 

 cross nervures, ending a considerable distance before the apex of the 

 wing; stigmatal region clouded, as in Corydalis; radius straight, 

 ending above wingtip, quite a distance from the apex, emitting the 

 media not very far from base, and at a very acute angle, but this angle 

 is greater than that made by the radial sector, which leaves the 



I Brodie, FossU Insects, pi. 8, fig. 12. 



