The Ants of the Baltic Amber. 
79 
to correlate them with the workers, becanse much more material than 
I have seen will be needed for this task, and becanse it can be under- 
taken only after the males of the recent species have been more care- 
fully studied. 
To Mayk’s description of the worker _D. balticus the following 
remarks may be added: The head is large, broader behind than in front, 
with distinct posterior corners and concave posterior border. The eyes 
are large, but only moderately convex. The antennal scapes do not 
surpass the posterior border of the head, as Mayr states and, in fact, 
do not reach it; the funicular joints are all less than twice as long as 
broad, except the last one. The thorax is stont, the hnmeri of the 
pronotum distinctly, though bluntly, angular, the pronotum nearly twice 
as broad as long, the mesonotum elliptical, only a little longer than broad, 
the base of the epinotum about J / 4 longer than broad and its straight pos- 
terior about 1 I 3 longer than its anterior m argin ; its sides are straight. 
The whole body is shining and finely shagreened, the head also covered 
with coarse but shallow punctures, the neck and declivity of the epi- 
notum are transversely rugose. The hairs on the body are erect and 
sparse and most abundant on the gaster; on the legs and scapes they 
are very short and appressed. 
I have seen 18 workers two males and two females of this species, 
in addition to the two dubious males mentioned above. These specimens 
are distributed as follows: one worker (without a number) in the Brusseils 
Museum, five workers and a male in the Klebs Coli. (K 766, K 5080, 
K 1054, K 1752, a 30, K 5109); one male, 11 workers and two females 
in the Geolog. Inst. Koenigsberg Coli. (7636/350, Mayr’s type; 10836/775, 
B 5236, B 19736, B 19729, B 18553, B 18957, B 18732, B 18603, and 
6 without numbers). 
JDolichoderus (Hypoclinea) passalomma sp nov. 
Worker (Big. 34). Length about 7 mm. 
Head, excluding the mandibles, somewhat longer than broad, 
elliptical, but little narrower in front than behind, without distinct 
posterior corners, with nearly straight posterior and convex lateral borders. 
Eyes a little behind the middle of the sides of the head, small, very 
convex and somewhat conical, as high as broad, consisting of very 
small ommatidia. Anterior border of elypeus rather deeply excised in 
the middle. Antennae slender, scapes reaching a little beyond the 
posterior border of the head; joints 1 — 3 of the funiculus more than 
twice as long as broad, remaining joints nearly twice as long as 
broad. Thorax rather short and stout. Pronotum fully twice as 
