492 NEW YORK STATE MUSEUM 
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moh eH 
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A transection near the base of the caudal spines 
A transection through the cephalis end of a cuticular pocket 
A sagittal section through the base of a caudal spine and its cuticular 
pocket laterad of the spiracular opening 
A transection of a cuticular pocket taken at about the level n—-o of 
figure 8 : 
A transection through the spiracular opening 
A transection taken caudad of the spiracular opening 
A transection of a cuticular pocket, showing its connection with a 
trachea 
A transection of a cuticular pocket taken cephalad: of the spiracwlar 
opening 
A section through the transverse connection of the tracheal trunks and 
the dorsal apodeme 
A portion of the hypodermis and some cuticular plates greatly enlarged. 
Some cuticular plates still more enlarged 
A sagittal section through the apex of the abdomen of a mature larva. 
mesad of a spiracular opening. 
PLATE 29 
Donacia 
Setal arrangement of the larvae 
DoOngeia C1Lmesti Corns 
Vonacia palmata 
Donacia subtilis 
Donacia porosicollis 
PLATE 30 
Donacia and Haemonia 
Setal arrangement of the larvae 
Donacia aequalis 
Donacia emarginata 
Haemonia nigricornis 
Anatomie details of Donacia palmata 
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9) 
6 
Lateral view of the abdomen of the adult female 
Dorsal view of the same 
Portion of a rhizome of Nymphaea advena, showing the at- 
tachment of the cocoon 
PLATE 31 
The food plant, Brasenia peltata, and transformations of 
Galerucella.-nymphaeae. Drawn by Miss Anthony 
or ® Ne 
PLATE 382 
Simulium territory 
A little fall in the bottom of Cascadilla gorge. 
PLATE 33 
Simulium meridionale 
Mandible of larva. x110 
Maxilla of larva. x110 
Hypopharynx of larva. x110 
Labium of larva. x190 
Respiratory filaments of pupa. x40 | 
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