244 ENTOMOLOGICAL NEWS. [June, '14 



At the first glance its head suggests affinity to Ilythea, but on 

 further examination it is seen to belong to an entirely differ- 

 ent subfamily. The form of the head, thorax and abdomen, 

 and its chaetotaxy determines its relation to Hydrina and 

 Axysta. The abdomen suggests Gastrops, having apparently 

 only four segments in the male and five in the female with the 

 second and third much longer than the others. The apical 

 margin of the third, in profile, is horizontal as in Lytogaster 

 and Axysta. 



Psilephydra nemorosa n. sp. (Plate X, fig. 4). 



Entirely shining black with faint submetallic lustre, or somewhat ob- 

 scured by the sparse brown pollen and the granular or scrobiculated 

 surface, especially of thorax and scutellum. Face greenish bronze (to 

 whitish in immature specimens), appearing golden from the dense yel- 

 lowish microscopic pubescence. Halteres black. Legs black with 

 trochanters, apices and bases of tibiae and all tarsi except apices, yel- 

 lowish. Wings brown hyaline, immaculate. 



Vertex smooth, twice or more times as broad as length of front; 

 frontal orbits converging anteriorly. Face one-half as broad as vertex, 

 nearly three times as long as broad, evenly clothed with scattered hairs 

 and dense pubescence. Cheeks as broad as eye-height, without bristle. 

 Antennae with second and third joints subequal, together somewhat 

 globose ; arista as long as width of vertex, thickened at extreme base, 

 microscopically plumose. 



Mesonotum and scutellum minutely scrobiculate or granulate. Pleurae 

 and abdomen more shining; segment 2 equals 2x1, 3 equals 1.5x2, 4 

 equals i. Ventral lobes of dorsal plates nearly contiguous. 



Legs with no apparent characteristic bristles. Apical joint of fore 

 tarsi $ dilated, with an apical fan of eight or more long hairs, their 

 claws long and stout, so spread laterally as to diametrically oppose each 

 other, their pulvilli also enlarged. Wings with vein 2 as long as ulti- 

 mate section of 3; 2, 3 and 4 straight, parallel; 5 sinuate; posterior 

 cross vein three times penultimate section of 4. Length 1.5 mm. 



Holy type. $, Juan Vinas, Costa Rica. Collected May i, 

 1910, 4 p. m., (P. P. Calvert) at a forest brook, 2500 feet al- 

 titude. No. 6065. Academy of Natural Sciences of Philadel- 

 phia. 



Paratypes. 2 9 2 $ with same data ; i male, Rio Siquiares, 

 Turrucares, Costa Rica. 2 



2 Notes on the Costa Rican localities cited in this paper will be found 

 in Transactions, Amer. Ent. Soc., xl, pp. 1-8, 1914. 



