THE ENTOMOLOGIST 



Vol. XLIII.l 



JUNE, 1910.0^ 



[No. 565 



SOME INSECTS IN BA.LTIC AMBEE. 



By T. D. a. Cockerell. 



The insects now described are chiefly of interest as showing 

 the immense antiquity of many existing forms of insect-life. 

 Although of Oligocene age, none of these species would excite 

 any surprise in the modern fauna. 





I. 



HOMOPTERA. 



Oliaras oUgoceiiiis, n. sp. (Fulgoridse : Cixiinse.) 



Length about 8f mm. ; head broad, rounded 

 in front, not much produced ; a delicate carina 

 extends from near the level of the front of the 

 eyes backward to the apex of the mesonotum ; 

 eyes prominent, not very large (smaller, for in- 

 stance, than in Cixiiis vitreus) ; lateral carinse of 

 mesonotum delicate, with more or less of a 

 double curve ; exterior to the lateral carina is a 

 straight groove ; tegmina broad, obtuse, clouded 

 with dark brown in the whole anal field, in the 

 upper apical region, and an irregular band con- 

 necting these areas ; nervures not punctate ; no 

 definable stigma ; hind wings dilute fuscous. 



The venation of the tegmina is not un- 

 like that oi-^Lamema, which Kirkaldy holds 

 The subcosta and radius separate before 

 the middle of the tegmen, but have a longer common stalk 

 than in Lamenia kiilia ; the media leaves them about as in 

 Lamenia; the cubitus branches at about the same level as 

 the subcosta and radius, and has a long fork before^joining 

 any other vein; the anals are nearly as in'^Lamenia,^Dictijo- 

 phora,^Dicranotro}iis, &c., but the first anal is modified api- 

 cally, so as to become practically lost in a couple of strong 

 cross-veins; the apical field is much smaller than in Lamenia, 

 and the inner series of gradate veins is zigzag ajid little oblique. 

 The head behind is very distinctly angled, as in Oliarus, and not 

 as ivPCixius. Among the species described from amber, this is 



ENTOM. — JUNE, 1910. N 



Oliarus oligocemis, Ckll. 



to be a Cixiine. 



