144 BRITISH ANTS. 



himself of a male at Ilfracombe in September, and a number of 

 specimens, taken by Dale in various localities, all winged and 

 occurring in October 58 . I captured a winged female by evening 

 sweeping on October 3rd, 1905, at Tubney, males and winged 

 females, at Enfield with Pool, in October, 1906, and an isolated 

 deflated female on the sand-hills at Studland on September 3rd, 

 1905. 



Emery records two specimens in which the wings are abnormal 

 in the one, a female, in both fore-wings a nerve incompletely 

 separates the cubital cell, as in Myrmica ; in the other, a male, the 

 right fore-wing possesses a second cubital cell, small and detached 

 from the radial cell 72 . 



Perkins records and describes a curious specimen of Stenamma 

 westwoodi which he picked up while walking between Dartmouth 

 and Stoke Fleming in October, 1890. It is an approximately 

 lateral ergatandromorph, the left side being worker, the right side 

 male, and the gaster apparently worker. He described it as 

 follows 51 : 



" Left Half. Head red, with darker cloud reaching from vertex to eye. 

 Mandible very large with 7 teeth. Antennae 12- jointed, testaceous, with 

 pale hairs ; first joint of flagellum longer than next two together ; these and 

 the following joints much wider than long ; apical joint very large and stout, 

 as long as two preceding ; scape very long and bent, as long as many joints 

 of flagellum. Eye small. Mesothorax red. Second node of petiole lighter. 

 Abdomen from middle line testaceous-brown. Legs shorter and thicker. 



" Right Half. Head dark brown. Mandible small (the ant being carded 

 I cannot clearly make out the form of the right mandible). Antennae 13- 

 jointed, dark, thin, with pale hairs ; 1st joint of flagellum stouter than next, 

 but sub-equal to it ; the following joints all much longer than wide ; apical 

 joint as long as on left side, but not nearly so stout ; scape short and straight, 

 only about as long as two joints of flagellum, and per se barely half the length 

 of that of left side. Eye larger ; more than twice the size of the other, and 

 much nearer to the base of antenna. Mesothorax dark, laterally with two 

 rough projections, apparently tegulae. Second node of petiole darker. Abdo- 

 men from middle line dark brown. Legs longer and thinner. 



" The form of the abdomen, so far as I can make out in this specimen 

 (set on card) is that of the $. The shape of the mesothorax is unsymmetrical 

 bilaterally. Length about 3 mm." 



This specimen is now in the Cambridge Museum. 

 LEPTOTHORAX Mayr. 



(\67rr6s, slender ; 0u>/>ct, thorax.) 



Type : Leptothorax clypeatus Mayr (Emery, 1912). 



This is a large, widely distributed, homogeneous genus, its 

 species being closely related to each other, and often only separated 

 by somewhat trivial characters. It occurs in Europe, India, Japan, 

 Africa, North America, etc., and comprises very agile, robust, and 

 hard ants, which however are of a timid and adaptable tempera- 

 ment, and not at all warlike in nature. Their habits are singularly 



