OF ENGLAND AND BAVARIA. / 



H. dislocatttf that to establish their difference requires a 

 careful scrutiny, and I have not had an opportunity of 

 personally examining the English species. Of the remaining 

 five species which I refer to the group Heterophlehia, four 

 belong to new genera, which must be placed in that group. 

 Two of these belong to the largest Odonata yet known, 

 jiaving an expanse of wing of 4^ — 5 inches, and bodies 3f — 

 4 inches in length. Their elongate pterostigma reminds one 

 strongly of JPetalwra, whilst the club-like dilated abdomen 

 in both the other species aifords a repetition of the form of 

 Ictinus. Of the English specimens already noticed the v/ings 

 figured in Brodie's Fossil Insects, PI. 10, fig. 4, lesemble the 

 wings of the above-mentioned Solenhofen species. I mean 

 that it belongs to the group Ilcterophlehia, the genera 

 forming connecting links between Calopterygina and Gom- 

 pldna. 



The true LihdluUna are only very feebly represented in 

 the Solenhofen strata by four species : foitunately one speci- 

 men is in sufficiently good preservation to admit of the com- 

 parison w^ith an English specimen, namely, w^itli that of 

 which the basal portion of a posterior wing is figured by 

 Brodie (PI. 5, fig. 10; Westwood, Pi. 15, fig. 5). The fine 

 neuration and the extraordinary multitude of cells reminds 

 one of the genus Poltjneura. But if w^e examine more 

 closely we shall find a form of neuration which has no repre- 

 sentative in the greater number of existing species ; that is, 

 the triangle of the posterior wings is formed exactly like the 

 triangle of the anterior wings, the post-costa being united with 

 the upper angle of the triangle, whereas otherwise it always 

 runs to the lower angle. This form is so abnormal, that in 

 the entire family of the Odonata I know of nothing to which 

 it can be compared. Here also the English species seems to 

 come very near to that from Solenhofen. 



