FISHERY BULLETIN: VOL. 70, NO. 2 



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• -RIGHT LENS OF FEMALES. r2=.000l 

 D-RIGHT LENS OF MALES. r2=.8944 

 O-LEFT LENS OF FEMALES. r2=.0242 

 A-LEFT LENS OF MALES. r2=.9l69 



A 



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 o 



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2.00 2.25 2.50 



LOG BODY LENGTH (S-V) (mm) 



Figure 5. — Log dry eye-lens weight compared to log 

 body length for ratfish collected off Newport, Oreg., 1965. 



10 



en 



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 cr 



q: 10 



UJ 

 CD 



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MALES 



FEMALES 



W 



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^h 



— RANGE 

 .^MEAN 



■^PLUS OR MINUS ONE STANDARD 

 DEVIATION OF THE MEAN 



I 



I 



_1_ 



50 100 150 200 250 

 BODY LENGTH (S-V) (mm) 



300 



Figure 6. — Comparison of the number of tritors on the 

 posterior side of the vomerine dental plate to body length 

 of ratfish collected off Oregon, 1965-1967. 



LITERATURE CITED 



Alverson, D. L., and M. E. Stansby. 



1963. The spiny dogfish (Squalus acanthias) in 

 the northeastern Pacific. U.S. Fish Wildl. Serv., 

 Spec. Sci. Rep. Fish. 447, 25 p. 

 Bailey, R. M. (chairman). 



1970. A list of common and scientific names of fish- 

 es from the United States and Canada. Am. Fish. 

 Soc, Spec. Publ. 6, 149 p. 

 Barnes, R. D. 



1963. Invertebrate zoology. W. B. Saunders, 

 Phila., 632 p. 

 BiGELOW, H. B., AND W. C. SCHROEDER. 



1953. Fishes of the western North Atlantic. Part 

 Two. Sawfishes, guitarfishes, skates and rays 

 [and] chimaeroids. Mem. Sears Found. Mar. 

 Res., Yale Univ. 1, 588 p. 

 BONHAM, K. 



1950. Some monogenetic trematodes of Puget 

 Sound fishes. In M. H. Hatch (editor), Studies 

 honoring Trevor Kincaid, p. 85-103. Univ. Wash. 

 Press, Seattle. 

 Clemens, W. A., and G. V. Wiley. 



1961. Fishes of the Pacific coast of Canada. 2d ed. 

 Fish. Res. Board Can., Bull. 68, 443 p. 

 Clothier, G. E. 



1957. The histology of the digestive tract of the 

 chimaeroid fish Hydrolagua colliei (Lay and Ben- 

 nett). M.S. Thesis, Oregon State Coll., Corvallis, 

 43 p. 



Crescitelli, F. 



1969. The visual pigment of a chimaeroid fish. 

 Vision Res. 9:1407-1414. 

 Croxton, F. E. 



1953. Elementary statistics with applications in 

 medicine and the biological sciences. Dover Publ., 

 N.Y., 376 p. 

 Dean, B. 



1906. Chimaeroid fishes and their development. 

 Carnegie Inst. Wash. Publ. 32, 194 p. 

 Halstead, B. W., and N. C. Bunker. 



1952. The venom apparatus of the ratfish, Hydro- 

 lagus colliei. Copeia 1952:128-138. 

 Kabata, Z. 



1968. Some Chondracanthidae (Copepoda) from 

 fishes of British Columbia. J. Fish. Res. Board 

 Can. 25:321-345. 



KORATHA, K. J. 



1960. Preliminary report on the parasites of a 

 chimaeroid fish, Hydrolagus colliei (Lay and Ben- 

 nett) from the eastern Indo-Pacific with comments 

 on the phylogenetic significance of parasitic dis- 

 tribution in Holocephali. (Abstr.) J. Parasitol. 

 46(5) Sect. 2:14. 



Lagler, K. F. 



1956. Freshwater fishery biology. 2d ed. Wm. C. 

 Brown, Dubuque, 421 p. 



Legendre, R. 



1944. Notes biologiques sur Chimaera monstrosa L. 

 Bull. Soc. Zool. Fr. 69(1) : 10-17. 



Lynch, J. E. 



1945. Redescription of the species Gyrocotyle from 



428 



