Orr and Blackburn: Resurrection of Sebastes variabilis and redescription of Sebastes ciliatus 



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Table 3 



Counts of soft-dorsal-, anal-, and pectoral-fin rays for Sebastes ciliatus and S. variabilis by region. AI or BS = Aleutian Islands or 

 Bering Sea; GOA = Gulf of Alaska; SEAK = Southeast Alaska; BC = British Columbia, n = number offish in sample. 



Species 



Region 



Dorsal-fin rays 



13 



14 



15 



16 



17 



Mean 



SD 



Sebastes ciliatus 



Sebastes variabilis 



AI or BS 



GOA 



SEAK 



AI or BS 



GOA 



SEAK 



BC 



Region 



17 



18 



19 



Mean 



SD 



Sebastes ciliatus 



Sebastes variabilis 



AI or BS 



GOA 



SEAK 



AI or BS 



GOA 



SEAK 



BC 



26 



52 

 24 



27 

 71 

 47 

 17 



18.19 

 18.16 

 18.17 

 18.17 

 17.93 

 18.02 

 18.12 



0.49 

 0.37 

 0.56 

 0.38 

 0.26 

 0.25 

 0.33 



Region 



Anal-fin rays 



Mean 



SD 



Sebastes ciliatus 



Sebastes variabilis 



AIorBS 



GOA 



SEAK 



AI or BS 



GOA 



SEAK 



BC 



present; postocular and tympanic spines absent or obso- 

 lete in adults (postocular present on at least one side in 

 23.2% and tympanic present on at least one side of 37.7% 

 of specimens examined), most often present in juveniles. 

 Interorbital region wide, 22.9-29.3% HL, strongly convex; 

 parietal ridges weak, and area between ridges slightly 

 convex; preopercular spines 5, directed posteroventrally; 

 two opercular spines, upper spine directed posteriorly, 

 lower spine directed posteroventrally; posttemporal and 

 supracleithral spines present; lachrymal spines rounded, 

 small; dorsal margin of opercle nearly horizontal; lower 

 margin of gill cover with small spines: posteroventral tip 

 of subopercle and anteroventral tip of interopercle rugose 

 or with 1-2 small spines. 



Dorsal-fin origin above anterodorsal portion of gill slit; 

 dorsal fin continuous, gradually increasing in height to 

 spine IV and decreasing in height to spine XII; spine XIII 

 much larger, forming anterior support of soft dorsal fin; 



membranes of spinous dorsal fin moderately incised, less 

 so posteriorly; soft dorsal fin with anterior rays longest, 

 posterior rays gradually shortening. Anal-fin spine II 

 shorter than III (7.5-14.2 vs. 10.0-14.6% SL), anterior 

 rays longest on soft rayed portion of anal fin, posterior 

 rays gradually shortening, posterior margin perpendicu- 

 lar to body axis or with slight posterior slant, anterior 

 ray tips directly ventral to or forward of posterior tips, 

 anterior tip of anal fin typically rounded. Pectoral fins 

 with ray 10 longest, extending to or slightly anterior to 

 vent, fin-ray length 24.6-31.8% SL, fin-base to ray-tip 

 length 24.6-31.8% SL; fin-base width 9.5-11.9% SL. Pel- 

 vic fins extend about 60% of distance from pelvic-fin base 

 to anal-fin origin, falling well short of vent, ray length 

 20.5-26.0% SL, spine length 52.4-67.4%, ray length. 

 Caudal fin shallowly emarginate, length 10.2-29.4% SL. 

 Vent positioned below dorsal-fin spine 10, 1.6-5.8% SL 

 from anal-fin origin. 



