Neva Acta Reg. See. Sc. Upsal. Ser. III. 



Carl Bovallius, The Oxycephalids. PI. II. 



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W. Meyer sculp. 



Fig. 1. Oxyoephalus Clausl. Fig. 2 — 3. Oxyoephalus Uiberoulalus. Fig. 4—6. Oxycephalus pectinatus. Fig. 7 — 12. Oxycephalus 

 laliorstns. Fig. 13. Tullbergella cuspidala. Fig. 14, 15. Calamorhynchus pellucidus. Fig. IE — 18. Dcrycephalus Lindstroemi. 



