I905-] Wheeler, Ants of the Genus Dolichoderus. 3^9 



surface of the body and legs, except the epinotum and dorsalmost portion of 

 the gaster, is covered with erect or suberect whitish hairs. These hairs are most 

 numerous on the vipper and lower surfaces of the head, and on the pro- and 

 meson otum. On the antennal scapes they are rather long but not erect. The 

 pubescence is hardly more abundant than in the typical form. Only the base 

 of the first gastric segment is yellow and the lateral spots on the second segment 

 are barely indicated. 



Described from seven workers collected July 2, 1905, at James- 

 burg, New Jersey, by Mr. Wm. T. Davis, to whom I take pleasure in 

 dedicating this interesting subspecies. A dozen workers labeled 

 ' ' New Jersey " and received some years ago from the late P. J. Schmitt, 

 O.S.B., are indistinguishable from the preceding. D. davisi exhibits 

 such a blending of the characters of the typical marice and plagiatus 

 that one is tempted to regard it as a hybrid form. More probably, 

 however, it represents a persisting phylogenetic stage in the develop- 

 ment of the typical marice from a plagiatus -like ancestor. 



Dolichoderus taschenbergi Mayr. 

 HypocUnea taschenbergi Mayr, Sitz. B. k. Akad Wiss. Wien, LIII, 1866, p. 498 



HypocUnea taschenbergi Mayr, Verhandl. k. k. zool. bot. Gesell. Wien, XX 



1870, p. 958. $. 

 Dolichoderus taschenbergi Mayr, Verhandl. k. k. zool. bot. Gesell. Wien 



XXXVI, 1886, pp. 436, 437. $. 

 Dolichoderus taschenbergi Dalla Torre, Catalog. Hymenopt., VII, 1893, pp 



161, 162. 

 Dolichoderus taschenbergi Emery, Zool. Jahrb. Abth. f. System., VIII, 1894, p 



330- 

 Dolchoderus taschenbergi Wheeler, Bull. Am. Mus. Nat. Hist., XX, 1904, p. 304 



Worker (Fig. BV — Length 3.5-4.3 rnm. 



Head a little longer than broad, elliptical; eyes in the middle of its sides 

 Clypeus flattened in front, convex behind, with a straight, entire anterior 

 border, slightly impressed in the middle. Antennal scape curved at the base 

 its tip extending a distance equal to its own diameter beyond the posterior 

 corner of the head. Funicular joints all longer than broad; first i^ times as 

 long as the second joint, second i^ times as long as the third; terminal joint 

 a little longer than the two penultimate joints together. Pro- and mesonotum 

 evenly rounded, somewhat depressed, mesoepinotal impression pronounced; 

 basal epinotal surface rather faintly convex, somewhat flattened in the middle, 

 passing over abruptly by means of a very sharp margin into the concave de- 

 clivity. The margin is slightly convex when seen from above and passes down 

 on either side to the mctasternum. Petiole low and thick, not as high as the 

 sharp epinotal margin, with a shorter and more convex anterior, and a longer, 

 flatter posterior surface. Border rather sharp in profile; seen from behind it is 



