Species of British Formicidce. 123 



rufo-pallescentibus ; capite thoraceque subtiliter longitudinaliter 

 rugulosis ; spinis metatlioracis minutis dentiformibus ; nodis 

 petioli sublsevibus. 

 ]\Ias. — Niger, parcissime flavido-pilosnlus ; mandibulis, antennis 

 pedibusque sordide pallescentibus, flagellis et tarsis dilute pal- 

 lidis; capite parvo thoraceque subtiliter striatulis; thoracis mar- 

 ginibus anticis et lateralibus nitidis; alis hyalinis, nervis palle- 

 scentibus, stigmate pallide fuscis : spinis raetathoracis nullis ; 

 nodis sublsevibus. 



Formica ccespitum, Linn. Faun. Suec, No. 1726 $ ; Syst. Nat., 



963, 11 ; Latr. Hist. Nat. Fourm., p. 251, 



tab. 10, fig. G2 5 . 

 Formica hinodis, Amoen. Acad., vi. p. 413, 94 5 ? ^^^ ^P* •" 



Cab. IMiJs. Linn. Soc. 

 Myrmica fuscula, Nyland. Adno. Mon. Form., 935, 6 ^, ^ , tab. 



18, fig. ^Q, g; Addit. Adno., p. 1053, ? ; 



Foerster, Hym, Stud. Form., p. 56, 29. 

 Myrmica ccEspiium, Curtis, Trans. Linn. Soc, xxi. 215, 8. 

 Manica ccespilutn, Jurine, p. 279. 



Female. — Length 3^ lines. Very dark fuscous, or quite black ; 

 the head narrower than the thorax, and longitudinally striate ; ocelli 

 of a glassy brightness ; the mandibles and antennae dark ferru- 

 ginous ; the scape, except the extreme apex, slightly fuscous, as 

 well as the flagellura towards the apex, the apical joint paler ; 

 thorax somewhat flattened above, the mesothorax being on each 

 side delicately and obliquely strigose; the scutellum finely strigose; 

 the mesothorax has on each side, a little within and before 

 the insertion of the wings, an abbreviated impressed line, and has 

 in front a smooth shining space ; the metathorax longitudinally 

 rugose above, the lateral spines short, stout and sub-acute; the 

 truncated portion of the metathorax below the insertion of the 

 spines is transversely sulcate ; the wings clear hyaline, the ner- 

 vures very pale, the stigma pale fuscous; sometimes the wings 

 are very faintly smoky at their base ; the legs rufo-fuscous, their 

 articulations, as well as the tarsi, rufo-ferruginous. Abdomen 

 elongate ovate, rather broader than the thorax, and rather longer, 

 the apical margins of the segments rufo-piceous ; the first node 

 is rugose, the second faintly roughened behind, the superior 

 margin of both nodes smooth and shining. 



Worker. — Lenjith li — 2 lines. The colour like that of the 



