154 
Psyche 
[Sept. 
middle ; on meso- and metatliorax, on each side, just above 
the legs a quadrate white spot; on second, third, fourth 
and fifth abdominal segments, also a narrow transverse 
band of white extending entirely across the segment near 
the hind margin, the ends of the bands enlarged, rounded 
and slightly curved forwards; the same white band on 
sixth and seventh segments but interrupted or less con- 
spicuous (obsolete) ; the last two abdominal segments are 
pale and the terminal one is a suckerlike organ, not used 
in progression, but assisting the insect to cling to smooth 
surfaces, as in Hemerobius.” 
The slide-mounted Washington larva shows that the 
protlioracic laterodorsal sclerites bear several setas, each 
arising from a well-developed pit. The sclerites of meso- 
and metanotum each bear a single posterior seta arising 
from a large pit. Other thoracic and abdominal setae are 
sparse, inconspicuous, mainly arranged in transverse 
rows. 
Both the Washington and Beltsville larvae have the 
jaws proportionally much shorter than those of first- 
stage larvae, but there is no definite fracture line, as 
described in Osmylus by Killington (1936, pp. 99, 224) 
and Withycombe (1923, p. 516), and the maxillae of the 
Washington larva are not broken off evenly with the 
mandibles. Study of more material will be necessary to 
determine whether there is a normal shortening of the 
jaws subsequent to the first instar, whether there is a 
regular fracture prior to pupation, or whether the jaws 
of the two larvae here studied were accidentally broken. 
Pupa. — Unknown. 
Material of Lomamyia examined : 
Larvae. — Washington, D. C., July 19, 1895. “ Found in 
the fungus garden (nest) of Atta occidentalism in wooded 
knoll, on Brentwood Road, near Soldiers’ Home.” H. G. 
Hubbard, 1 larva. 
Beltsville, Md., October 28, 1941, in fallen log, in pocket 
containing living and dead termites, R. J. Kowal, 1 larva. 
Plummer’s Isl., Md. (located in Potomac River 8 miles 
6 My friend, M. E. Smith, has informed me that the ant in question was 
almost surely Trachymyrmex septentrionalis (McCook). Specimens are not 
known to have been preserved. 
