. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. JjU U 364 TL K V 367 im'ffM W 365 T\ 366 Figs. 362-367. Trichoptera, Larvx 362. Phylocentropus, tarsal claw of front leg (Krafka) Polycentropodidae. 363. Timeodes, tarsal claw (Rousseau) Psychomyiida;. 364. Psilotreta, dorsal view of metathorax showing chitinous plates. (Krafka) Odontoceridsc. 365. Leptocella, front leg. a, coxa; b, trochanter; c and d, femur. (Krafka) Leptoceridae. 366. Limnephilus, anterior view of prothorax in section showing prosternal horn (Krafka) Limnephilidae. 367. Philopotamus, larva (Roussea
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. JjU U 364 TL K V 367 im'ffM W 365 T\ 366 Figs. 362-367. Trichoptera, Larvx 362. Phylocentropus, tarsal claw of front leg (Krafka) Polycentropodidae. 363. Timeodes, tarsal claw (Rousseau) Psychomyiida;. 364. Psilotreta, dorsal view of metathorax showing chitinous plates. (Krafka) Odontoceridsc. 365. Leptocella, front leg. a, coxa; b, trochanter; c and d, femur. (Krafka) Leptoceridae. 366. Limnephilus, anterior view of prothorax in section showing prosternal horn (Krafka) Limnephilidae. 367. Philopotamus, larva (Rousseau) Philopotamidae. 8. Both meso- and metanotum entirely membranous, at most with only minute thickened spots. Larval case tubular, open at both ends, usually straight or but little bent, built on a spiral axis. Mesonotum, and usually also the metanotum with some well de- veloped thickened sclerites 9 9. Labrum with a complete transverse row of stout setae extending across its disk CALAMOCERATID,E Labrum without such a row; usually bearing six to eight large setae and small ones, irregularly placed 10 10. Anal hooks with a deeply serrate edge of comb-like teeth; larva living in a spiral case strikingly similar in form to a snail shell. HELICOPS?CHID,E. 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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