480 SAMUEL H. SCUDDER ON 



than it seems to be, its true dimensions being attempted to be shown in the figure here 

 given, which is taken, with scarcely any doubt, from the same specimen, now in the collec- 

 tion of Kev. P. B. Brodie. The specimen is slightly duskier than the dirty, chalky- white 

 stone, perfectly Hat, with delicately impressed veins whieh are the clearer for being filled 

 with dirt. Nexl the anal area another wing partly overlies this, but it is not drawn. 

 The wing was of a sub-oval form with a very much fuller curve below than above, the 

 apex, which is rounded though produced, being in the middle of the upper half of the 

 wing. Only the tip of the mediastinal vein appears on the fragment, and it is very sim- 

 ilar to that of A. Eatoni, terminating probably a little before the middle of the outer half 

 of the wing. The scapular vein differs from that of A. Eatoni considerably, terminating 

 scarcely above the apex and having only simple oblique branches in the outer third of 

 the wing, and a single longitudinal also simple branch, arising one-third the way from the 

 base. The internomedian vein is much as in A. Eatoni, but only branches in the api- 

 cal third of the wing. The externomedian vein occupies an even broader field than in 

 the last species-, with similar but more arcuate, and apically more longitudinal branches, 

 also simple. The anal veins are not seen. 



Length of fragment, 6.75 mm.; probable length of wing, 8.5 mm.; breadth, 4.75 mm. 

 From the English Purbecks, named for Mr.R. McLachlan, whose well-known entomolog- 

 ical studies have extended occasionally to fossil insects. 



Aporoblattina Westwoodi sp. nov. 



[Without name] Westw., Quart, Journ. Geol. Soc. Lond., X, 396, PI. 18, fig. 28. 



Westwood looked on this wing as phryganideous, but it plainly belongs in this im- 

 mediate vicinity, resembling closely the preceding species, from which it differs in its 

 greater size and slenderness, in the forking of the first branch of the scapular vein (no 

 branch in any part of the wing is forked in A. Mc Laclilani) and in the generally less 

 regular disposition of the branches of the scapular area. The externomedian vein is also 

 simpler and less regular. 



The fragment is 10.5 mm. long and 5 mm. broad. Probably the wing reached a length 

 of 14 mm. It comes from the lower Purbecks of Durdlestone Bay. 



Aporoblattina Kollari. 



[Without name] Brodie, Foss. Ins. Engl., 33, 119, PI. 5, fig. 14. 

 Blatta Kollari Gieb., Ins. Vorw., 322. 



Westwood, in Brodie's Avork, looked upon this as belonging to a family of iSTeuroptera 

 "of which Corydalis is the type." It plainly belongs here, and is apparently not distantly 

 related to the two preceding species and especially to A. Westwoodi, from which it is 

 readily distinguished by its still slenderer form, and the greater straightness and regular 

 distribution of its scapular branches. 



Length, 18 mm.; breadth, 6.5 nun. It comes from the Purbeck strata of the Vale of 

 Wardour. 



