72 
Psyche 
[June 
reported by Wolcott (1951) . A total of 50 larvae and vacated 
larval respiratory funnels was found in these 13 grass- 
hoppers, an average of 3.85 per host. Two hosts contained 
one larva each, while two others contained eight and nine. 
Since all hosts were collected within three days in 1951 and 
on a single date in ’52, the size range and probable age of 
the larvae are particularly noteworthy. In all specimens 
containing more than two larvae, considerable variation in 
larval size was found. This probably indicates different 
larval entry times, although it is also suggestive of feeding 
competition among the larvae. Two hosts which each 
contained one first instar larva, also contained six and seven 
other larvae of various sizes, including several three 
quarters grown. Another contained a first instar larva along 
with two more which were ready to pupate. 
The dissection of three species of adult female ormiines 
by Townsend (1911) indicates that larviposition may be the 
rule with these flies. It is not known whether the females 
deposit their larvae directly on the host insects, or merely 
on ground or vegetation frequented by them. The armored, 
planidium type first instar larva (figs. 1 and 2), coupled 
with the following observations, suggests an active seeking 
out of host by larva. Four of the cone-heads collected 
contained first instar larvae, one of which was found in the 
muscles of the right hind femur, one quarter of the femur 
length from the coxa. This cone-head had been killed and 
pinned, so that even though the larva was found headed 
apically in the femur, there is no assurance that this was 
the case before death. Although it is tempting to speculate 
that it had entered the host through soft or membranous 
areas of the tarsus, it might be argued that it had entered at 
any other point and become diverted into the leg in making 
its way to the abdomen. 
On the other hand, a careful autopsy of seven cone-heads 
showed that not one of 30 larvae was encountered in any 
part of the body but the abdominal cavity. Twenty more 
larvae, or larval funnels, in the six other cone-heads were 
also restricted to the abdomen. The second first instar larva 
was found near the anterior end of the mid gut, and the 
third in a tangle of malpighian tubules, both free in the 
