Feeney: Post-yolksac development of two southern California sculpins 



465 



C. analis. Postflexion/metamorphosing individuals 

 apparently do not exhibit neustonic behavior like C. 

 analis. Juvenile 0. triads have been collected sub- 

 tidally on reefs and off rocky areas (LACM collection 

 data). 



Conclusions 



Clinocottus analis larvae can be grouped with the 

 "Artedius" group of cottid larvae based on the high 

 number of preopercular spines (9-12) (Washington et 

 al. 1984). The advanced anus of postflexion larvae is 

 typical of Clinocottus. Swank (1988) showed that Cli- 

 nocottus analis is more closely related to other species 

 within the genus rather than to Oligocottus ynaculosiis; 

 C. analis was found to be the most divergent in the 

 genus. Larval characters presented here lend support 

 to her conclusions. Clinocottus analis larvae share 

 many characters with other Clinocottus, but still have 

 some significant differences, i.e., a high PAVM count 

 and development of prickly spines on the body. 



Orthonopias triads larvae can be grouped, along 

 with A. creaseri, A. meanyi, Chitonotus, and Icelinus, 

 in the "Myoxocephalu^" group (Washington et al. 1984) 

 because of the presence of four preopercular spines. 

 Body morphology of 0. triads is most similar to A. 

 meanyi. 



Orthonopias triads and C. analis preflexion larvae 

 co-occur in the same areas (15 m isobath near rocky 

 habitats), but can be easily distinguished using pigment 

 and morphological characters. Larger postflexion lar- 

 vae can be distinguished by the number of preopercular 

 spines. 



Acknowledgments 



I thank the following for their help: David Ambrose, 

 Daniel Cohen, Pamela and Lissette Feeney, Javier 

 Gago, Robert Lavenberg, Gerald E. McGowen, Geof- 

 frey Moser, Margaret Neighbors, Debra Oda, Brenda 

 and Jim Rounds, Jeremyn Schmitz, Helga Schwarz, 

 Jeffrey Seigel, Camm C. Swift, H.J. Walker, Brian 

 White, William Watson, and the Natural History Mu- 

 seum of Los Angeles County. 



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