1905.] Wheeler, The Ants of New Jersey. 401 



preceding forms, dark colored, without hairs on the chin and petiolar 

 border, and with a more shining and less pubescent gaster. The 

 habits are similar to those of other forms of the species. 



81. F. pallide-fulva nitidiventris var. fuscata Emery. — -Near Hali- 

 fax I have taken several workers evidently belonging to this variety, 

 which is characterized by its dark color and rather opaque gaster. 

 It occurs in woods and seems to be less fond of the open, sunny 

 country than the preceding forms of pallide-fulva. 



82. F. fusca Linn. var. subsericea Say. — Caldwell (Cresson) ; New 

 Brunswick (Smith) ; Jamesburg (Davis) ; Fort Lee, Great Notch, 

 and Lakehurst (Wheeler). 



Next to Lasius niger var. americanus this is the commonest of 

 our ants in particular and of our insects in general. Like that variety 

 it ranges from timber-line in the Rocky Mountains to the sand of the 

 seashore and from British America to the latitude of North Carolina. 

 It prefers sunny, grassy places and either constructs dome-shaped 

 mounds which are larger and more definite in outline in the Middle 

 States, or excavates its galleries under stones, boards, the bark of 

 stumps, etc. Except when living in large colonies it is a very cowardly 

 species. Like the other members of the genus Formica it attends 

 Aphides but is equally fond of feeding on the bodies of dead insects. 



83. F. fusca var. subaenescens Emery. — Emery mentions a New 

 Jersey specimen intermediate between subsericea and the true sub- 

 aenescens. There can be little doubt that the pure form of the latter 

 variety occurs in the hilly portions of the State. It is a woodland 

 form, preferring damper soil and more shade than the var. subsericea. 



84. F. fusca subpolita Mayr var. neogagates Emery. — Very 

 probably occurs in the hilly portions of the State. 



Polyergus Latreille. 



85. P. rufescens lucidus Mayr. — Camden Co. (Smith's List); 

 Clementon (Fox); Vineland (Mrs. Mary Treat). 



This rare and beautiful species, the "shining slave-maker" of 

 McCook, or "shining amazon" as it may be called, uses the workers 

 of Formica schaufussi as slaves, or auxiliaries. These are bred from 

 pupae kidnapped from their maternal nests by the war-like lucidus 

 workers. The latter are quite unable to feed themselves, excavate 

 their nests, or care for their own brood, but have to depend for these 

 important activities on the schaufussi workers. Hence the lucidus 

 are quite unable to live an independent life and may be regarded as 

 [November, 1905.] '* ^^ 



