2492 Psyche [December 
Michigan: Ann Arbor (J. Dawson). 
Connecticut: Colebrook (Wheeler). 
Massachusetts: Forest Hills, Boston (M. Tanquary); Med- 
ford (Dall.). 
Emery has called attention to the resemblance of this species, 
which is characterized by the small size of the females and the 
peculiar pubescence and pilosity of these and the workers, to the 
European bicornis and affinis. The description given above is 
drawn from numerous specimens of all three phases taken August 
12, 1910, taken by Mr. M. Tanquary from a large masonry dome 
nest in low ground near Forest Hills, Mass. The deiilated females 
bear a remarkable resemblance in size and coloration to the cor- 
responding phase of our common Tapinoma sessile. 
4. Lasius umbratus vestitus subsp. nov. 
Female. Length about 6 mm. 
Differing from subumbratus and aphidicola in its smaller size and in pilosity. 
Body dark brown above, with paler lower surface, mandibles, antennz and legs. 
Surface finely shagreened and shining but appearing more opaque on account of 
the dense layer of fine grayish pubescence. Hairs sordid white, fine and uniformly 
abundant, erect, long on the body, shorter on the scapes and legs. The petiole, 
which is fringed with long hairs, has a peculiar shape, being in profile cuneate 
and inclined forward and rather thick at the base; seen from behind it is narrowed 
above, with a blunter and more rounded margin than in the other subspecies, and 
without emargination. Wings very long (8 mm.), faintly infuscated at the base. 
Described from a single specimen taken by Prof. J. M. Aldrich 
at Moscow, Idaho. 
This may be the female of L. speculiventris, of which Emery 
described only the male and worker. 
5. Lasius umbratus speculiventris Emery. 
L. speculiventris Emery, Zool. Jahrb. Abth. f. Syst. VII, 1893, worker . 
” Worker. Yellow; head subpubescent, densely hairy; scapes and tibiz hirsute 
with erect hairs; head, thorax and legs pubescent, gaster without appressed pubes- 
cence, delicately, microscopically, transversely rugulose, very shining. Length 
3.5-4 mm. 
Male. Fuscous; legs, antenne and genitalia pale; densely pilose; scapes with 
short hairs; tibiee with scattered, scapes with short hairs; wings clouded with 
fuscous at the base. Length 3.5-4mm., width of head 1.2 mm., length of scape 
0.7 mm., anterior wing 4.5 mm. 
