H. M. Morris 
71 
External Form. The larva (Plate III, fig. 1) is composed of a small cephalic 
region, and eleven body segments, the segmentation being fairly distinct, but 
somewhat obscured by the presence of supplementary folds. 
On the ventral surface of the cephalic region is a small opening, the mouth, 
cl 
•\ 
/ \ 
Text-fig. 1. Cephalic and prothoracic segments of larva of Hypocera incrassata Mg. Latero- 
ventral view, a., antennal organ; as., anterior spiracle; cl., cephalic lobes; ms., mandibular 
sclerite. x 32. 
Text-fig. 2. Sensory structures on cephalic lobe, a., antennal organ; b., club-shaped projecting 
structure; c., group of papillae, x 670. 
Text-fig. 3. Anterior spiracle of larva of Hypocera incrassata Mg. x 670. 
Text-fig. 4. Posterior spiracle of larva of Hypocera incrassata Mg. x 670. 
from which projects the single mandibular sclerite (Text-fig. 1). Dorsal to 
the mouth are a pair of hemispherical lobes, bearing sensory structures. The 
most conspicuous of these structures is the antennal organ, which consists 
of two segments, the basal segment of which is cylindrical, and the distal 
segment dome- or bell-shaped (Text-fig. 2 a). 
