PELAGIA PANOPYRA. 



43 



had an opportunity (: 03) of studying specimens of P. panopyra, believes 

 that the extremely short manubrium and the fact that the mouth arms are 

 separated almost to its base serve to distinguish P. pcrla from the latter, and 

 it is therefore best to retain these two species as well as P. ci/anella, at least for 

 the present ; for we must bear in mind that it is quite as possible to reduce 

 species too much as increase them too much, and that reduction so excessive 

 as to result in the masking of constant varieties, no matter how closely re- 

 lated they may be to one another, is much more harmful than any degree 

 of reduplication in nomenclature. 



Pelagia panopyra Peron. 



Medusa panopyra Peron, : 07, pi. 31, fig. 2. 



Pelagia panopyra Peron et Lesueur, : 09, p. 349; Brandt, '38, p. 382, taf. 14, fig. 1, taf. 

 14 a, figs. 1-5 ; Haeckel, '80, p. 509; Maas, : 03, p. 29; Mayer, : 06, p. 1139, pi. 2, 

 figs. S, 4- 

 Pelagia phosphora Haeckel, '80, p. 506; Vanhoffen, : 02 a , p. 36. 

 Pelagia placenta Haeckel, '80, p. 510; Vanhoffen, '88, p. 12. 

 Pelagia tuberculosa Couthouy, in L. Agassiz, '62, p. 164. 

 Cyanea labiche Quoy et Gairnard, '24, p. 571, pi. 84, fig. 1. 

 ? Pelagia tahitiana Agassiz and Mayer, : 02, p. 158, pi. 8, figs. 34, 85. 



Plate 1, Fig. 1. 



So long as our knowledge of the various other species of the genus 

 remains as incomplete as it is at present, it does not seem worth while to 

 attempt any fuller synonomy of P. jianopyra than that given above. 



Station 4587 ; 300 fathoms to surface ; 5 specimens, 5-7 mm. in diameter. 



Station 4675 ; surface ; 1 specimen, 60 mm. in diameter, fragmentary. 



Station 4692 ; surface ; 1 specimen, 40 mm. in diameter, excellent 

 condition. 



Station 4696 ; surface ; 1 specimen, 20 mm. in diameter, excellent 

 condition. 



Acapulco Harbor ; surface ; many ephyrae, probably referable to this 

 species. 



Measurements of two specimens are : — 



