. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. CLASSIFICATION OF INSECTS 205 Ocelli absent; fourth joint of the tarsi prominently bilobed; some of the branches of the radial sector directed forward; medium sized species, 20 to 40 mm. in wing expanse. (Fig. 334). (Proto- sialis, Am.; Austrosialis, Stenosialis, Austr.; Sialis, Holarc). SIALIDjE Larvae Eight pairs of lateral gills; a pair of hooked anal prolegs, but no terminal filament CORYDALIDiE Seven pairs of lateral gills; no anal prolegs; terminal filament present SlALID^E. Figs. 333-335. Neuroptera 333. Coryda
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. CLASSIFICATION OF INSECTS 205 Ocelli absent; fourth joint of the tarsi prominently bilobed; some of the branches of the radial sector directed forward; medium sized species, 20 to 40 mm. in wing expanse. (Fig. 334). (Proto- sialis, Am.; Austrosialis, Stenosialis, Austr.; Sialis, Holarc). SIALIDjE Larvae Eight pairs of lateral gills; a pair of hooked anal prolegs, but no terminal filament CORYDALIDiE Seven pairs of lateral gills; no anal prolegs; terminal filament present SlALID^E. Figs. 333-335. Neuroptera 333. Corydalis, wings. Corydalids. 334. Austrosialis, wings (Tillyard) Sialidae. 335. Chauliodes, wings. Corydalidae. SUBORDER RAPHIDIODEA (RAPHIDIOIDEA, EMMEN6GNATHA, part.) Moderate-sized, slender, predatory species with elongate cylindrical prothorax; head large, nearly horizontal, mandibles strong, antennae long and thread-like; ovipositor long; cerci not developed; wings mem- branous, both pairs similar, with numerous forkings, the costal cell with crossveins, subcosta not fused with the first radial; legs similar, the first pair attached at the base of the prothorax, tarsi five-jointed. Metamorphosis complete; larvae terrestrial. Snake-flies, Serpent-flies. 1. Ocelli present; pterostigma bordered proximally by a veinlet from Ri. (Raphidia, Palaearc; Agiilla, Palasarc, Am. (Figs. 336, 338)). RAPHIDIID^ Ocelli absent; pterostigma not bordered proximally by a veinlet from Ri. (Inocellia, Holarc. (Fig. 337); Fibla, Eur.) INOCELLIID^. 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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