524 Cc. H. RICHARDSON 
The larval stages of Platygaster lineatus Kieffer are comparable 
to those of Inostemma piricola, three forms only being present. 
Platygaster marchali Kieffer has the same type of metamorphosis 
as P. lineatus. 
Platygaster ornatus Kieffer and a species of Platygaster from 
Cecidomyia oenophila Haimh. present a different type of meta- 
morphosis from the preceding species in that the cyclopoid larva 
is wanting. The primary larva is ovoid, the mandibles are small 
and the last abdominal segment is without appendages. Seg- 
mentation is clearly indicated on the ventral surface. This larva 
passes gradually into the final segmented larva. 
Matheson and Ruggles (’07) have figured the young larva of 
the Braconid, Apanteles glomeratus L. which is parasitic upon 
the common cabbage worm, Pieris rapae. In this larva the anal 
segment is enlarged into a globular swelling beneath which the 
hypodermis is greatly thickened. No later stages are described, 
but owing to the close resemblance between this and the first 
stage larva of Microgaster nemorum it is highly possible that 
such exist. Kulagin (’98) figures the caudal enlargement in the 
same species. 
Wheeler (’07) found several interesting larval stages in the 
Chalcidoid Orasema viridis Ashmead, a pupal ectoparasite of 
Pheidole kingi Andre subsp. instabilis Emery. The planidium 
larva is less than 1 mm. in length and has a very definite seg- 
mentation, the anterior segments being longer and broader, the 
posterior smaller and often telescoped into one another. ‘The 
head bears a pair of minute mandibles, the anal segment, a pair 
of hair-like cerci. The first three segments have on their dorsal 
surfaces each a pair of spines; there is also a pair of spines on the 
ventral surface of the seventh segment. The color of the larva 
in this stage is dark brown. The planidium larva moults, be- 
comes lighter in color and increases rapidly in size. The anal 
cerci are lost and the larva enters what may be considered a 
second or intermediate stage. When this has attained complete 
growth, it undergoes an ecdysis, appearing as a thick-set ‘semi- 
pupa.’ Following an ecdysis, a third stage is entered upon. 
The ‘semipupa’ is now studded with large pustules arranged in 
