SARSIA. COCCOMETRA. 179 



Anthomedusae. 



Codonidae Haeckel, 1879. 

 sens. em. Vanhoffen ('89) ; Hartlaub ('07). 



Anthomedusae with gonads in the form of one or more rings sur- 

 rounding the manubrium ; with simple unbranched tentacles ; with simple 

 mouth opening without lips. 



Sarsia Lesson, 1843. 

 sens. era. Hartlaub ('07). 



Codonidae with four perradial tentacles, equally developed and armed 

 with nettle swellings ; gonad in the form of a single ring or tube entirely 

 surrounding the manubrium, and not interrupted in either per- or inter-radii. 

 With or without stiel canal and apical projection. Exumbrella in adult 

 without nemocyst ridges, though these are often present in young stages. 

 Hydroid stage, the genus Syncoryne. 



For a review of the present state of our knowledge concerning Sarsia I 

 refer the reader to the excellent summary and revision of Hartlaub (: 07). 



Previously there have been described from the Pacific five species refer- 

 able to Sarsia : — S. rosaria A. Agassiz ('65), *S'. radiata Von Lendenfeld ('84), 

 S. minima Von Lendenfeld ('84), S. apicula Murbach and Shearer (: 03). S. occi- 

 dental),* Fewkes ('89 b ), and S. species? Agassiz and Mayer (: 02). In addition 

 the common Atlantic S. eximia is now known, in the hydroid stage, from 

 Alaskan waters (Nutting, : 01). The present collection contains specimens 

 of two well-marked species of this perplexing genus, both of which appear 

 to be undescribed. They are sufficiently distinguished by anatomical char- 

 acters from all the other Pacific species, but whether they are equally dis- 

 tinct from all of the numerous Atlantic forms is less certain. 



Sarsia coccometra, sp. nov. 



Plate 7, fig. 8; Plate 40, fig. / ; Plate 43, figs. S, 9. 



Station 4015 ; surface; 1 specimen. 

 Station 4617; surface; 5 specimens. 

 Station 461'J ; surface; 3 specimens. Type. 



