122 Mr. Smith's Essay on the Genera and 



Mr. Curtis captured this insect in Scotland in July, 1825, but 

 did not find any females. 



Sp. 6. Myrmica longiscaim. 

 Myrmica longiscapus, Curtis, Trans. Linn. Soc, xxi. 213, 4. 



Mr. Curtis says, " this species resembles M. Icevinodis, but the 

 males are much smaller, the antennae much longer, and instead of 

 the scape being only as long as the two basal joints of the flagel- 

 lum, as in M. Icevinodis and M. rubra, it is equal in length to the 

 eight following joints. The head is less convex, there is no channel 

 down the forehead, and the clypeus is testaceous : there is a fovea 

 on the hinder margin of the second nodule ; the wings do not 

 differ ; the females are very similar to those of M. Icevinodis, hut 

 they are darker, and the basal nodule is shorter and stouter. The 

 neuters are smaller and different in colour from tliose of M. Icevi- 

 nodis, being entirely ochreous, excepting the black eyes and a 

 brownish cloud on the back of the abdomen." 



I do not possess this species, which must approach very closely 

 to 31. Icevinodis; the figure of the nodes of the abdomen of the 

 female, in profile, appear to characterize a distinct species ; the 

 characters of the male, however, are those of M. l(Bvinodis, re- 

 specting which there is evidently, in the above quotation, some 

 misconception ; in my typical specimens, named by Dr. Nylander, 

 the scape is equal in length to 7 or 8 of the basal joints of the 

 flagellum, and Nylander's description is, " scapus tertiara partem 

 totius antenna; fere excedens, longitudine prope articularum 7 

 sequenti flagelli." Nylander does not mention the fovea on the 

 second nodule, but it exists in all his specimens — the females and 

 workers of M. Icevinodis are both characterized by the fuscous 

 cloud on the back of the abdomen, which renders the affinity of 

 these species the closer. 



Sp. 7. Myrmica cccsjnlum. 



Foemina. — Fusco-nigra, nitida, flavido-pilosula ; mandibulis, an- 



tennarum flagellis, articulationibus pedum tarsisque pallidis ; 



capite, plcuris et metathorace longitudinaliter striatis opacis ; 



metathoracis spinis mediocribus validiusculis, obtusiusculis ; 



alis hyalinis, stigraate cinereo-fusco. 

 Operaria. — Fusco-nigricans, sparse pallide pilosula ; mandibulis, 



antcnnis pcdibusque rufo-testaccis, articulationibus et tarsis 



