54 NATURAL HISTORY OF KERGUELEN ISLAND. 



the inferior branch, distributed to the apical half of the hinder margin, 

 comes from the superior one, somewhat in front of the oblique vein, and 

 that its two inferior branches are derived, as"in the other wing, from the 

 basis. All veins are beset at intervals with stiff hairs, like the marginal 

 vein. 



The hind wings are similar in shape to the fore wings, but shorter and 

 narrower. The surrounding marginal vein similar but not so strong. 

 There are none of the longhairs in the hind wing. A middle vein gives off 

 in the first third an oblique branch to the hind margin. This is the only 

 vein in the hind wings reaching the marginal vein. All others cease 

 more or less abruptly before reaching them. Shortly after a similar ob- 

 lique vein goes to the anterior margin. In the middle of the length of 

 the wing the main vein is branched, and gives a long inferior branch 

 going to the hind margin near the tip- without reaching it; then, the 

 superior branch furcates in two parallel branches going to the tip; the 

 inferior one shows j)osteriorly an indication of the beginning of a branch. 



Legs long, stout, the posterior longer than the abdomen ; femurs stout 

 and thick (perhaps ihe species jumps like many Fsocidce) ; tibia cylin- 

 drical, as long as the femur, slightly hairy, with two movable spines on 

 the apex below; tarsi 3-jointed, one-third shorter than the tibia, cylin- 

 drical, the last joint long, the two others equal, and together two-thirds 

 of the length of the basal joint; at the apex of the last joint two claws, 

 thicker at their bases, the apex fine, a little bent at tip ; between the 

 claws a rounded plantula. 



Abdomen ovoid, more pointed toward the apex. The egg-valves 

 very clearly visible (the specimen is a female) ; two exterior membra- 

 nous, elongated lobes, two horny interior stems, long, narrow, perhaps 

 articulated; the apical part bent inward, and the tip again outward; 

 between the two horny ones are two smaller elongated, pointed, horner 

 stems, much shorter than the others. 



The color is pale brownish-yellow, darker on head and mandibles ; 

 antennte grayish ; wings hyaline, colorless, the long hairs of the fore- 

 wings dark. 



Length of the body a little less than 2 millimeters ; expanse of fore 

 wing 1^ millimeters. Locality Kerguelen Island, October, 1874.* 



* The only specimen noticed during the stay of the Transit Party at Kerguelen was 

 captured October 17, within doors, and was mounted in balsam upon a microscopic 

 elide. Shortly before its capture some instrument-boxes, brought from Washington 

 and containing a quantity of packing-straw, had been unpacked in the same room ; a 

 circumstance rendering the habitat of the insect very doubtful at the time. — J. H, K. 



