. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. THOMSON : MEGALICIITHYS AND ECTOSTEORIIACIIIS 293 postrostral bone may he i)resent between the posterior post- rostrals (Fipr. 6F, ). The infraorbital lateral line passes directly from the lachrymal to the naso-rostro-premaxilla and has no connection with the bones .snrronnding the external naris. The external naris is bonnded by two bones, an anterior prenarial bone wliieh is very large, and a smaller postnarial (Fig. 5, , ). The parietals are relatively long, compared with Ect- osteorhachis; they lack
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. THOMSON : MEGALICIITHYS AND ECTOSTEORIIACIIIS 293 postrostral bone may he i)resent between the posterior post- rostrals (Fipr. 6F, ). The infraorbital lateral line passes directly from the lachrymal to the naso-rostro-premaxilla and has no connection with the bones .snrronnding the external naris. The external naris is bonnded by two bones, an anterior prenarial bone wliieh is very large, and a smaller postnarial (Fig. 5, , ). The parietals are relatively long, compared with Ect- osteorhachis; they lack the external parietal foramen. AVith regard to the rest of the dermal sknll roof I have been able to add little to Moy-Thomas' description (1935).. Fig. 5. Megalichtliys. Diagrammatic reconstruction of the dermnl skull roof in dorsal 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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