Vol. xxix i ENTOMOLOGICAL NEWS. 23 



3. Petiole well developed, more or less inclined; workers generally 



brownish in color; nests usually under stones . . .Iridomyrmex 



Petiole vestigial or absent; workers black Tapinoma 



Genus Dolichoderus Lund. 



1. Head and thorax with shallow punctures 2. 



Head and thorax coarsely and deeply punctured 3. 



2. Epinotal concavity with a strong median longitudinal ridge; head, 



thorax and petiole yellowish red; body hairless above, 



marine Forel (Subgenus Hypoclinca Mayr) 

 Kpiriotal concavity without such a ridge; at least the head black/4. 



3. Base of gaster with reddish yellow spots, 



plagiatus Mayr (Subgenus Hypoclinea Mayr) 



4. Body without erect hairs on the upper surface; body and ap- 



pendages deep black. . taschenbergi Mayr, var. atterina. Whir. 

 Body with erect hairs on the upper surface; thorax reddish 

 brown; base of gaster with reddish yellow spots, 



plagiatus Mayr var. pustulatus Mayr. 



D. mariae Forel. 



This beautiful species is very common in the State. The 

 workers build nests in the soil at the base of broom straw. 

 The writer has found several thousand workers in a nest. The 

 nest has a peculiar odor. The workers are especially fond of 

 aphids and coccids ; they were often found attending the aphis, 

 Lachnus australis, on pine. In numbers this species is the 

 most common throughout the State. 



D. plagiatus Mayr. 



It is very hard to distinguish between the workers of this 

 species and the above. The habits of the two are practically 

 the same. This species is not as numerous as D. mariae. 



D. plagiatus Mayr, var. pustulatus Mayr. 



This species is a variety of D. plagiatus, from which it dif- 

 fers principally in its smaller size and its numerous coarse 

 punctures on the head and thorax. This variety does not seem 

 to be numerous in the State. 



D. taschenbergi Mayr, var. atterina Whir. 



This shining black species is very common. The writer has 

 found its nests in the soil at the base of pine trees and in the 

 soil at the base of broom straw. The habits of this species are 

 the same as those of the above two species. 



