68 PSYCHE [August 



Second and fourth antennal joints equal . . ..... 1. 



1. Antennal joints one and two equal; antennal formula 35(421); color oray 



drab to greenish, body sparsely hairy (Mass.) . . kingii^ . P. Ckll. 



Antennal joints one and two unequal ....... 2. 



2. Fifth antennal joint much shorter than the third ; antennal formula 35(42) 1 ; color 



olive green, legs and antennae somewhat darker (Colo.) . . olivacea n. sp. 

 Fifth antennal joint (counting spur) equal to or longer than third . . .3. 



3. Upper surface of the body with a thin coat of white meal; color light yellow; 



length of antennal joints (1) G8, (2) 85, (3) 13G-153, (4) 85, (5) 119 + 34 ;( 

 (Colo.) flatnda n. sp. 



Upper surface of body without meal; color bright yellow; length of antennal 

 joints (1) 45, (2) GO, (3) 120, (4) 60, (5) 114 + 24 (N. M.) intcrjcctiV^. P. Ckll. 



FoRDA FLAVULA n. sp. $ . Length 3 mm. Body oval or slightly ovate; color 

 light yellow, the upper surface sparsely covered with white meal; sutures inconspicu- 

 ous; body without hair; legs and antennae brownish; head rather broad, fairly 

 distinct from rest of body; eyes dark, small, but distinct; cauda similar to F. occi- 

 dentalis, but with a few bristles; beak like F. occidentalis except at the apex where 

 the dark lines divide form a V, the apex of which is towards the apex of the beak, 

 length 50 /<; spiracles distinct, light brown; antennae five-jointed; formula 53(24)1 

 or (53) (24)1; length of antennal joints (1) 68, (2) 85, (3) 136-153, (4) 85, (5) 111) 

 + 34 /(; measurements of middle leg; coxa 85, trochanter + femur 340, tibia 340 

 (or slightly more) tarsus 153, claw 51 ti\ middle tibiae, under high power, have four 

 spines about 6 /t long; a small sensorium at apex of fourth antennal joint and a 

 larger one on the fifth joint at the base of the spur. 



Habitat. — Boulder, Colorado, May 9, '07 (S. A. Rohwer). On roots of grass 

 in nest of Lasius niger var. americanus Emery. 



FoRDA OLIVACEA n. sp. 9. Length 2i^-3 mm. Body ovate to oval; head 

 small and not very distinct from the rest of the body; body without hairs or mealy 

 covering; color olive green, legs and antennae somewhat darker; sutures inconspicu- 

 ous; eyes dark, very small; cauda without bristles but with very short hair, the sides 

 are not as straight as in F. occidentalu; beak as in F. flavula 55 /«; antennae five- 

 jointed; formula 35(42)1; length of joints (1) 68, (2) 85, (3) 204, (4) 85, (5) 102 + 

 17 //; measurements of middle leg: coxa 85, trochanter 4- femur 306, tibia 340, 

 tarsus 119 claw 28 //; a small sensorium at apex of fourth antennal joint, a larger 

 on fifth a little before base of spur, between this large sensorium and base of spur are 

 three smaller ones arranged in a quarter-circle. 



Habitat. — Boulder, Colorado, May 9, '07 (S. A. Rohwer). On root of grass 

 in nest of Lasius niger var. americaniis Emery. Not associated with F. flavida n. sp. 



