Occasional Papers of the Museum of Zoology 13 



way by a worker when first seen. A single isolated winged 

 male Avas taken on the north beach on vSeptember 21. 



The interesting relation between this parasitic species and 

 the several varieties of A. fnk'a is described in the chapter on 

 temporary social parasites in Wheelers Ants, pp. 447-8, and 

 also in the American Naturalist, \'ol. 35, p. 724, where it was 

 first reported. 



8. Myrmica punctiventris Roger. — But four specimens of 

 this species were collected, and each of these were isolated. 

 The first was taken on September 16 in the low hardwood for- 

 est near the pond. It was one of a miscellaneous collection 

 made on the floor of the forest (see Aphaenogaster aquia). 

 This specimen was collected in the damp black leaf mold be- 

 neath the accumulation of dead leaves that covered the surface 

 of the ground. The ground-cover was a sparse growth of 

 coarse grass. On the following day two specimens were se- 

 cured. The first was collected in the leaf-mold beneath dead 

 leaves on the floor of the poplar and birch forest, a rather 

 higher and drier habitat than the preceding and lying nearer 

 the dunes. A miscellaneous collection made in this spot con- 

 tained Formica subsericea, Stenamma hrevicorne, and Lasius 

 americoniis. None of these had colonies in the immediate vi- 

 cinity. The second specimen was taken in the dry hardwood 

 forest near the beach. The soil was a light, dry leaf mold, 

 with a rather more complete ground-cover than the preceding 

 habitats, with a much less complete covering of dead leaves 

 (see Camponotus pennsylvanicus). The final record was ob- 

 tained on September 20 when another specimen was collected 

 in the damp black leaf mold in the low hardwood forest. Col- 

 lected simultaneously were specimens of Lasius aphidicola and 

 Aphaenogaster aquia. 



