Jane, 1903 .] 
Parasites of Certain Fulgoridae. 
447 
not deposited in the larva before it has made a cocoon, is that, if 
the female Cheiloneurus were to try depositing eggs in the Dry- 
inus larva while the latter was still in the sack, upon the body of 
tlje Ormenis nymph, this latter would most likely make a sudden 
jump, as it is accustomed to do on being disturbed, and this 
would dislodge the adult Cheiloneurus before she had had time to 
deposit the four to six eggs within the Dryiuus larva The Dry- 
inus larva supplies just about enough food for five Cheilon- 
eurus larvae. They very likely get their growth during the 
autumn ; hibernate either in the larval or the pupal stage, and 
transform to adults early in spring. This would give time enough 
for more than one brood during the summer, providing its host 
also has more than one brood, or perhaps it is not unlikely that 
it finds some other host for an early summer brood. 
One interesting point in connection with this species, is its 
parasitizing another Hymenopterous form ; whereas the other 
species of Cheiloneurus are parasitic upon Coccidae, and the most 
of the members of the same group, Kncyrtinae, are parasitic upon 
various species of Coccidae and Aphididae. 
IV. Gonatopus bicolor Ashm. 
V. Labko longitarsis Ashm. 
Bull. 45, U. S. National Museum, pp. 85, SS, 1893. 
April 11, 1903, a nymph of Liburnia lutulenta was found in- 
fested with a parasite living in a sack protruding from the dorsal 
side of the abdomen (Plate 21, Fig 13). The next day the 
parasitic larva escaped from the host and spun a cocoon between 
fragments of grass leaves. 
April 14 and 20. about a dozen more similarly parasitized 
nymphs were obtained. In all of them the parasite had about 
completed its growth, and in a few days all had escaped from 
their hosts and spun cocoons. The cocoons were white, and 
some were cylindrical and formed in the groove of upper surface 
of grass leaves ; others were made on flat surface of the breeding 
jar, and were similar in form to those of Dryinus ormenidis 
(Plate 20, Fig. 2 ), 5mm long and 3 mm. wide. 
May 12, the first adult apjjeared. It was a male Labeo longi- 
tarsis (Plate 21, Fig. 12). May 14, a female Gonatopus bicolor 
appeared (Plate 21, Fig. 1 1). These were both from cylindrical 
cocoons on grass leaves. May 17, another female G. bicolor, and 
May 18 and 19, each, a male specimen of L. longitarsis appeared. 
These were all that completed the transformation. None of the 
females came from a cocoon like Fig. 2 ; but one of the males 
did. 
These parasites evidently hibernate with their host, which 
hibernates in the nymphal stage. 
