72 
DIPTERA 
base of the radial sector, cubitus forked under or proximad of it; anal veui stout but not reaching the 
margin (PI. 5, Fig. 5, 6). 
This genus resembles Boletina most closely but differs in having longer legs, the lore metatarsi 
being longer than the corresponding tibiae and in a relatively longer petiole of the media, the petiole 
being about half as long as the anterior branch. There are several undescribed North American species 
of Boletina which closely approch Leptomorphiis. 
Type species : L. Walkeri, Curtis. 
Geographical distribution of species : 
1. L. africamts, Meunier, Le Naturahste, p. 480 (2), f. i, 2, 3 (1907). 
2. L. elongaUis, Walker, List Dipt. Brit. Mus. Vol. i, p. 87 (1848). -— (This 
is certainly not a member of this genus; may possibly belong to 
Mycetobia.) 
3. L. hyali?i!is, Coquillett, Proc. U. S. Nat. Mus. Vol. 23, p. 5g8 (1901). 
— L. parvitlits, Coquillett. see Boleiina. 
4. L. Walheri, Curtis, Brit. Ent. p. 365, plate (i83i). 
Walkeri, Winnertz, Verh. Zool.-bot. Ges. Wien, Vol. i3, p. 770 (i) (i863); 
Schiner, Fauna Austr. Dipt. Vol. 2, p. 453 (1864). 
From Copal, Zanzibar. 
Country unknown. 
United States. 
Europe. 
23. Genus ALLOCOTOCERA, Mik 
Allocotocera. Mik, Wien. Ent. Zeit. Vol. 5, p. 102 (4) (i856). 
Eurycera. Dziedzicki, Pamietnik Fizyjograf. Vol. 5 (sep.), p. 5 (i885). 
Characters. — E3^es elongate, somewhat emarginate at the base of the antennae; ocelli arranged 
in a row on the broad front, the middle one a little smaller; palpi four jointed, the first joint pyriform, 
the fourth joint long and slender, about as long as the other three taken together ; antennae 2 + 14 jointed, 
the basal joints differentiated, the flagellar joints compressed, their width greater than the length, the 
last joint conical. Thorax quite highly arched. Abdomen elongate, somewhat flattened, depressed. Legs 
of moderate length, all tibiae with setae, the hind pair with two rows on extensor surface, the middle and 
fore pair each with one row on the flexor and one row on the extensor surface. Wings oval; the costa 
extends beyond the tip of the radial sector; subcosta ends in the costa beyond the base of the radial 
sector and is connected with Ri by Sca (subcostal crossvein); the media forks at a considerable distance 
from the crossvein, while the cubitus forks proximad of its distal end ; anal vein stout but ends abruptly 
some distance from the wing margin (PI. 5, Fig. 7). 
This genus lies between Leptomorphus and Boletina, from the former it differs in having shorter 
abdomen, shorter metatarsi relatively to the tibiae, and wider wings ; from the latter in its wing venation. 
Type species : A.flava, Dziedzicki. 
Geographical distribution of species : 
1. A.flava, Dziedzicki, Pamietnik Fizyjograf. Vol. 5, pi. 4, f. 8-i5(£«rK- Europe. 
cera) (i885). 
2. A. flavescens, nov. sp. (1), United States. 
3. A. pulchella, Curtis, Brit. Ent. p. 645 (i), pi. {Leia) {i85y) Jenkinson. England. 
(i) A. flavescens, nov. sp. — Female. — Yellowish; thorax subshining, sixth and seventh abdominal segments and the posterior mar- 
gins of the others blackish ; dark ocellar spot ; wings yellowish hyaline, with a subfuscous spot at tlie apex. Leng;th 3 . 5 mm. Wisconsin. 
