164 BRITISH ANTS. 



Devon, S. : Seaton (Dale) 22 ; Stoke Fleming (Perkins) 27 ; 

 Torquay (Hamm)* Q . 



Dorset : Portland 22 , Lulworth 22 , and " Burning Cliff " near 

 Weymouth 29 (Dale) ; Lyme Regis (Nevinson)** ; Ringstead (Haines). 



Isle of Wight : Landslip (Lewis) 1 * ; Ventnor (Saunders) 20 . 



Hants, S. : Hayling Island (Saunders) 30 ; New Forest (Dale) 11 . 



Sussex, E. : Fairlight near Hastings 32 . 



Kent, E. : Near Dover (Curtis) 9 ; St. Margaret's Bay (Donis- 

 thorpe) 35 ; Kent, W. : Lower Shorne near Gravesend (Baly) 13 . 



Surrey : Coombe Wood (F. Smith) 8 . 



Essex, S. .: Southend (Saunders's Coll.). 



Middlesex : Colney Hatch (F. Smith) 11 . 



Worcester : Worcester (Fletcher) 25 ; sides of the Teme, Powick, 

 Bransford 31 . 



Leptothorax tuberum is found in moss, decaying wood, in and 

 under bark, in old stumps, in the dry stems of brambles, and also 

 under stones. 



Latreille recorded it as inhabiting the chinks in walls 3 , and Forel 

 says it is found on the mountains in Switzerland as high as the 

 region of the fir trees, but also on the plains, in dry and rocky 

 places under stones 18 . 



L. tuberum has not been found further north than Worcester- 

 shire in Britain. 



Farren-White discovered a large colony between the laminae of 

 a boulder of Portland stone on the Isle of Portland 29 , and Perkins 

 saw the workers running over shale in the hottest sunshine on the 

 cliffs round Stoke Fleming, their nests being situated in cracks 

 between the flakes of shale, the individuals in each nest however 

 being few in number 27 . 



In 1857 Baly discovered a colony in a decaying post at Lower 

 Shorne near Gravesend in which there were not less than one 

 hundred and fifty individuals 13 . 



Nevinson found, at Lyme Regis, some rotten sticks bored by 

 Osmia leucomelana lying on the ground, and on cutting one of these 

 open to look for the cells of the bee, he came upon a nest of L. 

 tuberum with undeveloped eggs. This stick he placed in a box, in 

 the hope of obtaining the sexes. He afterwards found similar 

 nests in the same locality, and introduced eggs from one of them 

 into the box with the others, when he noticed that immediately 

 the workers discovered the new eggs, they felt them with their 

 antennae, seized them about two-thirds down, and carried them 

 into their nest. All the eggs hatched out, and several males and 

 females were obtained 33 . 



Forel observed the copulation of L. tuberum on the summit of 

 Mont Tendre on August 30th, 1871, and he records isolated fertile 

 females under bark at Vaux and Zurich in the spring 19 . 



