NO. 2119. BRITISH FOSSIL INSECTS— COCKERELL. 483 



men 416 m long, slender; second dorsal segment 672 fi long; portion 

 of abdomen beyond second dorsal 432 fx long. There is no basal cell 

 in front or hind wings, the basal nervm^e being absent; the stigmatic 

 vein is quite long (96 /x), with a distinct knob; the very faint venation 

 of the apical half of the wing is like that of Cinetus,^ but the insect is 

 not closely allied to Cinetus, being certainly a Diapriid of the sub- 

 family Spilomicrinae. The reference to Aneurhynchus is necessarily 

 more or less provisional, but there are no evident grounds for proposing 

 a new generic name. 



Oligocene at Gurnet Bay (Brodie). LacoeColl. 7642. It is inter- 

 esting to find such a minute and delicate insect well preserved. 



Holotype.—C&t. No. 61410, U.S.N.M. 



The following eight species are all ants. 



PONERA HYPOLITHA, new species. 

 Plate 64, figs. 3-4. 



Represented by the middle of the wing, showing thick dark veins, 

 the venation as in modern Ponera. The following measurements 

 are in n: Length of first submargined cell, 1,600; length of first 

 section of marginal nervure, which runs vertically down from middle 

 of stigma, 400; length of upper side of first discoidal cell, 800; length 

 of second submarginal cell, 1,040; median cell on second discoidal, 

 640. The second submarginal cell comes to a point above, 



Ohgocene at Gurnet Bay (Brodie). Lacoe Coll. 7671 (type). On 

 same piece of rock as Necropsylla anglica. In Euponera succinea Mayr 

 from Baltic Amber the lower basal corner of the first discoidal cell is 

 much more produced, and comes much nearer to the base of the 

 second discoidal, A hind wing (7527), 5 mm. long, is referred to 

 P. hypolitha, as it has the Ponera venation, and the appearance of 

 the nervures is similar, 



Holotype and paratype.—Csit. Nos. 61411, 61412, U,S,N.M. 



DOLICHODERUS BRITANNICUS, new species, 



Plate 65, figs. 6-7. 



Female. — Anterior wing about 6 mm. long, as preserved faintly 

 reddish, with pale ferruginous venation, except the subcosta, which 

 is dark; stigma long and narrow; base of marginal cell vertical, and 

 level with end of second submarginal, the latter narrowed to a point 

 basaUy, where it meets the upper apical corner of first discoidal; first 

 discoidal quadrate, longer than high, not narrowed above, not 

 nearly reaching the transverse median. The following measure- 

 ments are in n : Transverse median nervure to basal corner of first 

 discoidal cell, 448; length of discoidal cell, 560; length of second 

 submarginal cell, 880; length of marginal cell, 1,760. 



1 Ashmead, Bull. 45, U. S. Nat. Mus., pi. 14, fig 6. 



