678 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



the inner side longer than the corresponding dorsal calcar ^ and 

 separated from the preceeduig spur by a distance about twice its 

 basal width. Fore femora unarmed above, beneath armed with one 

 or two minute spines on each side; middle femora unarmed above 

 except for a distinct genicular spine on the hind margin, beneath 

 armed with two or three very minute spinules on each margin; pos- 

 terior femora stout, about three times as long as the greatest width, 

 abruptly tapering in the apical third to near the tip, the upper surface 

 smooth, no raised points, the lower side armed on each margin in the 

 apical part with a few very small backwardly directed, mostly dis- 

 tantly separated, serrations; no genicular spines on the hind femora. 

 Ovipositor very short, about as long as the pronotum, gently 

 upcurved, the teeth of the inner valves long and sharp; cerci about 



Fig. 21.— Phrixocnemis longispinosus. Adult female. 



as long as the ovipositor, expanding to the middle of the apical 

 third and from there tapering to the tip, sparsely covered with very 

 long and exceedingly fine hairs. 



General color yellowish with the sides of the thorax and the upper 

 part of the abdomen and head blackish, the pronotum and mesonotum 

 with a distinct yellowish dorsal stripe. 



Length, head to the end of the abdomen, exclusive of the ovipositor, 

 12.5 mm.; pronotum, 3.5 mm.; fore femora, 4 mm.; hind femora, 9 

 mm.; ovipositor, 3.5 mm.; width, pronotum through the widest part, 

 4 mm.; hind femora at widest point, 3.25 mm. 



Holotype. — Female, Govan, Washington, August 24, 1911, Mr. 

 Hyslop collector. Type in the United States National Museum, Cat. 

 No. 19461. 



The above insect was being carried away by a predaceous wasp, 

 Larropsis dolosana Rohwer. 



In the long dorsal spurs of the posterior tibiae and in the lesser dis- 

 tance separating the two apical pair this species approaches some- 

 what the genus Rhachocnemis. 



Figure 21 shows the holotype of this species. 



1 This calcar shows some signs of injury, being more abruptly tapered apically than the others, and thus 

 may really be longer than the last dorsal spur, or equally long Only the left hind leg is present, the right 

 one being broken off and lost. 



