NOTE Jensen et a\ : Differentiating Paralithodes larvae using telson spines 



783 



length ratio until the extent of character overlap is 

 known. A ratio of >0.45 (RKC) or <0.45 (BKC) usual- 

 ly distinguished the species in our samples from both 

 areas. Eye measurements, like spine counts, vary with 

 area but can be useful when the rostrum or carapace 

 is damaged or distorted. In our samples the overlap in 

 telson spine counts was greatest in zoeael, but for- 

 tunately this was the stage when the two species could 

 be most reliably distinguished by the proportion of 

 rostrum to carapace length. 



Acknowledgments 



We thank Mike McGurk and Dave Warburton of 

 Triton, Ltd., for their help in the field, and Trent 

 McDonald, Pam Wardrup, and Tom Wainwright for 

 suggestions and advice. This study was funded by 

 Minerals Management Service of the Department of 

 the Interior, through an interagency agreement with 

 the National Oceanic and Atmospheric Administration, 

 Department of Commerce, as part of the Alaska Outer 

 Continental Shelf Environmental Assessment Program 

 (OCSEAP). 



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