FISHERY BULLETIN: VOL, 83, NO. 1 



Figure 47. —Sicyonia picta Faxon 1893. Syntype 5 19 mm cl, off Golfo de Panama. Lateral view. Scale = 5 mm. 



ones (3 + 3, bmc; 4+3, 19%; 4+2, 22%; 3 + 2, 0.5%; 

 2 + 3, 0.5% ), dorsal teeth in females often crowded 

 anteriorly with apical ones, about evenly spaced 

 along margin in males. Adrostral carina, subpar- 

 allel and close to ventral margin, extending to base 

 of apical teeth. 



Carapace with well-marked postrostral carina 

 bearing two teeth: 1) epigastric tooth small, sub- 

 equal to or only slightly larger than first rostral 

 tooth, situated distinctly anterior to hepatic spine, 

 between 0.13 and 0.16 (mean 0.15) cl from orbital 

 margin; and 2) posterior tooth, much larger, four 

 or five times higher, than epigastric, hooklike, its 

 apical portion acutely pointed and strongly curved 

 anteroventrally, situated far posterior to hepatic 

 spine but well in advance of posterior margin of 

 carapace, between 0.60 and 0.68 (mean 0.64) cl 

 from orbital margin. Postrostral carina low an- 

 teriorly, slightly elevated just in front of posterior 

 tooth, and forming high crest descending gently 

 from latter to posterior margin of carapace. Tuft of 

 setae present at anterior base of each tooth. An- 

 tennal spine sharp, projecting from short, low 

 buttress; hepatic spine considerably larger than 

 antennal, arising from moderately raised area, 

 and situated between 0.18 and 0.24 (mean 0.22) cl 

 from orbital margin. Postocular sulcus deep an- 

 teriorly, continuing posteriorly as low groove; 



58 



10 15 20 



carapace length (mm) 



25 



Figure A&.— Sicyonia picta. Relationship between rostrum 

 length and carapace length (regression equation, y = 0.51173 + 

 0.26668X). 



hepatic sulcus deep; hepatic carina indistinct; 

 branchiocardiac carina recognizable only pos- 

 teriorly, extending for short distance subparallel 

 to slope of posterior tooth, then curving dorsally 

 to posterior margin of carapace. 



Antennular peduncle with stylocerite produced 

 in long spine, its length 0.75-0.85 distance be- 

 tween lateral base of first antennular article and 



I 



