35] STUDIES ON GREG ARI NES RAM M 35 



PYXINOIDES BALANI (Kolliker) Tregouboff Type Species 



[Figures 65, 82, 88] 



1848 Gregarina baiani Kolliker 1848: 35 



1848 Stylorhynchus Baiani Frantzius 1848: 195 



1851 Gregarina Baiani Diesing 1851:10 



1859 Gregarina Baiani Diesing 1859: 728 



1863 Gregarina Baiani Lankester 1863: 95 



1899 Gregarina baiani Labbe* 1899: 36 



1903 "Gregarina" baiani Minchin 1903: 329 



1912 Pyxinoides baiani Tregouboff 1912: liii 



Sporonts associated in pairs, ovoidal to cylindrical. Max. length seen 

 by Kolliker 63/x, by Tregouboff 130/x primite, 60/* satellite. Ratio LP : 

 TL ::!:!. 3 to 1:3; WP : WD :: 1:1 to 1:1.4. Protomerite dome- 

 shaped, slightly dilated below middle, terminating in a long cone upon 

 which is surmounted an epimerite in the form of a short stylet dilated cen- 

 trally into a bulb (Kolliker). Deep constriction at septum, deutomerite 

 widest in middle. Nucleus larger, spherical with one karysome. 



Intestine of Balanus pusillusEcker; B.tintinnabulum'L. (Koll.), B. am- 

 phitrite Darw., B. eburneus Gould (Treg.). 



Taken at Triest, Cette, France. 



Kolliker first described this species, although he credits "Professor 

 Ecker" with having seen it before, evidently without placing it upon 

 record. 



Frantzius reasonably considered it a member of the genus Stylorhyn- 

 chus from the character of the epimerite, which resembles that of a new 

 genus Bulbocephalus Watson (1916) of the family Stylocephalidae. 



The species was not described again until the time of Tregouboff, who 

 contributes many new observations, assigning to it a new name, evidently 

 ignorant of the earlier work, and creating for it a new genus, Pyxinoides. 



From the beautiful drawing of Kolliker, of a cephalont, there can be 

 no doubt that one and the same species is involved. He even shows in the 

 tiny figure the longitudinal grooves in the bulb of the epimerite. 



Members of the genus Balanus also harbor *Nematoides fusiformis, 

 very similar in some respects but yet regarded as a separate species. See 

 discussion under that species. 



PYXINOIDES CTHAMALI (Leger and Duboscq) Tregouboff 



[Figures 78 and 81! 

 1909 Frenzelina chtamali Leger and Duboscq 1909a: 112, 114, 115 



1911 Frenzelina cthamali Sokolow 1911:281 



1912 Pyxinoides cthamali Tregouboff 1912: Iviii 

 Sporonts regularly cylindrical, primite 230/x in max. length, satellite 



170/z. Ratio LP : TL :: 1 : 4.5; WP : WD :: 1. 1. Protomerite wid- 



