1919.1 203 



Third year. — After hibernation, according to Fabre, pairing takes 

 place, and the eggs are laid in June. The fact of my finding young 

 larvae towards the end of July is quite in agreement with this state- 

 ment ; but there is some doubt whether oviposition always takes place 

 so soon after pairing, or whether another year does not elapse between 

 these two acts. The isolated act of pairing observed by me as related 

 above may merely have been very belated, but other specimens kept in 

 captivity by Mr. Hugh Main were found pairing freely in August, thus 

 suggesting that the female may have to pass through another winter 

 before laying her eggs. This is a point that Mr. Main hopes to settle 

 shortly. 



Biitisli ^ruseura (Nat. Hist.), S.W. 7. 

 Anyust 20th, 1919. 



LA8IACANTHA CAPUCINA Germ. A TINGID BUG NEW TO THE 

 BRITISH LIST. 



BY E. A. BUTLER, B.A., B.Sc., F.E.S. 



Mr. J. H. Keys is the fortunate discoverer of this interesting 

 addition to the list of British Hemiptera. In June last he obtained about 

 a score of specimens on the cliffs at the Lizard, Cornwall, and they 

 occvirred on the known food-plant, wild thyme. Mr. Keys says: "The 

 insects were taken off thyme, b}^ ' brushing ' with my hand plants 

 growing by a pathway ; by this method the insects were knocked into 

 the path and then collected; they were not abundant, at most three or 

 four examples in a cluster of the plant." Two specimens also were 

 taken at the roots of plants on a big boulder about a mile away across 

 the Downs. 



Lasiacantha was erected by Stal in 1873, as a sub-genus of TIngis ; 

 the next year he made it of generic value. By some later authors it has 

 been merged in Monanthia (s. latiss), but it is now generally regarded 

 as a good genus, of which four Palaearctic species are known. The genus 

 has not hitherto been represented in our British fauna ; it belongs to 

 that section of the Tingididce which has the rostral channel formed by 

 the bucculae closed in front. It may be distinguished by having the 

 lateral margins of pronotum and hemielytra furnished with setigerous 

 denticles. L. capucina is dimorphous, having both macropterous and 

 brachypterous forms, the latter of which appears to be far the commoner, 

 and to it all the specimens taken by Mr. Keys belong. The macro- 

 pterous form is of the elongate shape which we are familiar with in 



