ICHNEUMON-FLIES — GELINAE I MESOSTENINI 



163 



front and middle tibiae brownish fulvous; front and middle tarsi 

 light brown, darker apically, pale at the joints, the middle tarsus darker 

 than the front tarsus; hind tibia fulvous brown, its base and apex 

 sometimes a little infuscate; hind tarsus brown, darker apically, the 

 joints paler; first three segments of abdomen ferruginous, the basal 

 half of the first more or less infuscate, the second and third, especially 

 the apical margin of third, often somewhat dusky. 



This is very close to /. minor, differing only in having a much more 

 polished sculpture. 



Type: 9, Poudre Lake, Rocky Mountain National Park, 11,000 

 ft., Colo., Aug. 11, 1948, H., M., G., D., and J. Townes (Washington, 

 USNM 63770). 



Paratypes: 9, Fall River Pass, Rocky Mountain National Park, 

 11,600 ft., Aug. 12, 1948, H., G., and D. Townes (Townes). 39, 

 same data as type (Townes). 9, Poudre Lake, Rocky Mountain 

 National Park, Aug. 12, 1948, 11,000 ft., H., G., and D. Townes 

 (Townes). 



This species occurs at timber line in the Rocky Mountains of 



Colorado. 



11. Ischnus lautus, new species 



Front wing of male 4.8 to 6.5 mm. long, of female 4.3 to 5.0 mm. 

 long; body stout; clypeus a little wider that other Nearctic species; 

 tyloids on about 5 segments, moderately sharp, linear, almost parallel 

 to long axes of the segments and extending about 0.75 their length; 

 mesoscutum polished or subpolished, with medium-sized punctures 

 that are unusually sharp and dense, the punctures separated by about 

 their diameter; scutellum rather broad, with lateral carinae only at 

 its basal corners, its punctures of moderate size, rather strong, sepa- 



FiGURES 71-73. — Localities: 71 (left), Ischnus minor; 11 (center), /. politus; 73 (right) 



/. lautus. 



