. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 504 bulletin: museum of comparative zoology angles acute or produced as stout spines; thorax coarsely punc- tate. (Nysson, cosmop.) 125. Eyes deeply emarginate; one clearly defined cubital cell, ab- domen petiolate and gradually enlarged apically (Trypoxylon, cosmop.); or two cubital cells, or three with the second petiolate (Pison, cosmop.; Pisonopsis, nearc; Aulacophilus, neotrop.). (Figs. 957, 959). (TRYPOXYLONIDjE). TRYPOXYLIDSE. 951. 952. 953. 954. 955. 956. Figs. 9 51 -960. Hymenoptera Chlorion, win
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 504 bulletin: museum of comparative zoology angles acute or produced as stout spines; thorax coarsely punc- tate. (Nysson, cosmop.) 125. Eyes deeply emarginate; one clearly defined cubital cell, ab- domen petiolate and gradually enlarged apically (Trypoxylon, cosmop.); or two cubital cells, or three with the second petiolate (Pison, cosmop.; Pisonopsis, nearc; Aulacophilus, neotrop.). (Figs. 957, 959). (TRYPOXYLONIDjE). TRYPOXYLIDSE. 951. 952. 953. 954. 955. 956. Figs. 9 51 -960. Hymenoptera Chlorion, wings. Sphecidse. Eucerceris, wings. Cerceridse. Bembix, wings. Bembicidse. Cerceris, wings. Cerceridse. Tachytes, wings. Larridse. Gorytes, wings. Gorytidse. 957. Trypoxylon, front view of head (Kohl) Trypoxylidse. 958. Tachytes, underside of thorax. M, mesosternum; P, its posterior pro- cess; C, coxse (Williams) Larridse. 959. Trypoxylon, wings. Trypoxylidse. 960. Niteliopsis, antenna of female (Williams) Larridse. 126. 127. Eyes not deeply emarginate, or if emarginate, the second of the three cubital cells is not petiolate 126 Fore wings with two or three completely closed cubital cells, the veins enclosing them strong and sharply defined 127 Fore wings with not more than one closed cubital cell 133 Labrum large, free, triangularly elongated beyond the clypeus, much longer than wide; radial cell simple, not appendiculate. 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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