. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. NS2 Figure 1. Caudal Skeleton: A. Maurolicus muelleri; B. Argyropelecus affinis; C. Polyipnus asteroides; D. Sternoptyx pseudobscura. Abbreviations: EP r; epural; HS i^ haemal spine; HYP =: hypurals; NS z^ neural spines; and UN =: uroneurol. hypurals 1-2 and 3-4 are always fused. In some cases, there is complete (Sternoptyx) or almost complete {ValencienneUtis) fusion of hypural elements. The following are the important evo- lutionary features. The caudal skeleton of Maurolicus appears primitive and is similar to the

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. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. NS2 Figure 1. Caudal Skeleton: A. Maurolicus muelleri; B. Argyropelecus affinis; C. Polyipnus asteroides; D. Sternoptyx pseudobscura. Abbreviations: EP r; epural; HS i^ haemal spine; HYP =: hypurals; NS z^ neural spines; and UN =: uroneurol. hypurals 1-2 and 3-4 are always fused. In some cases, there is complete (Sternoptyx) or almost complete {ValencienneUtis) fusion of hypural elements. The following are the important evo- lutionary features. The caudal skeleton of Maurolicus appears primitive and is similar to the caudal skeleton of Vificiiiuerria as illustrated by Weitzman (1967b). The three sternoptychid genera are character-. 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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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology