. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 366. Figs. 362-367. Trichoptera, Larvae 362. Phylocentropus, tarsal claw of front leg (Krafka) Polycentropodidae. 363. Timeodes, tarsal claw (Rousseau) Psychomyiidse. 364. Psilotreta, dorsal view of metathorax showing chitinous plates. (Krafka) Odontoceridae. 365. Leptocella, front leg. a, coxa; b, trochanter; c and d, femur. (Krafka) Leptoceridae. 366. Arctsecia, anterior view of prothorax in section showing prosternal horn (Krafka) Sericostomatidae. 367. Philopotamus, larva (Rousseau) Philopotamidse. 9. Labrum much
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 366. Figs. 362-367. Trichoptera, Larvae 362. Phylocentropus, tarsal claw of front leg (Krafka) Polycentropodidae. 363. Timeodes, tarsal claw (Rousseau) Psychomyiidse. 364. Psilotreta, dorsal view of metathorax showing chitinous plates. (Krafka) Odontoceridae. 365. Leptocella, front leg. a, coxa; b, trochanter; c and d, femur. (Krafka) Leptoceridae. 366. Arctsecia, anterior view of prothorax in section showing prosternal horn (Krafka) Sericostomatidae. 367. Philopotamus, larva (Rousseau) Philopotamidse. 9. Labrum much longer than broad. Pronotum and mesonotum chitinized; metanotum with four chitinized plates (Fig. 364). ODONTOCERIDiE Labrum much broader than long; upper side of thorax not as above 10 10. Body suberuciform; mesonotum generally soft like the metano- tum, rarely with two small chitinous plates; abdominal con- strictions well marked; lateral gills on segments 2 to 7 covered with black hairs. Larval case tubular, open at both ends, straight or but little bent; living in tranquil water. PHRYGANEID53 Body eruciform; mesonotum generally entirely corneous, some- times with only chitinized plates or rarely entirely soft; gills not pubescent with black hairs 11. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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