501 
BALFOUR. I would also add that the reproof which FooTE administers 
to W. N. Parker for an alleged misuse of the term “extrabranchials”, 
by applying it to the branchial skeleton of the Cyclostomes, is the 
outcome of his own ignorance of the works of RATHKkE and CuVIER, 
wherein the statement of the supposed homology between these 
structures occurs. 
On the other hand, allowing for Foorr’s mistake of calling the 
cartilaginous gill rays the “branchiostegal rays’, and assuming that 
his figure 3 represents the true state of affairs, this author has, un- 
consciously, opened up a new field of investigation, for the mode of 
origin of the extrabranchials of Raia radiata herein depicted is 
totally at variance and altogether irreconcilable with the mode of 
development of Elasmobranch extrabranchials described by Donrn. 
But, under any circumstances, such utter disregard as is evinced by 
these authors, WHITE and FOOTE, of the classical memoirs of RaTHKE, 
JOHANNES MÜLLER, GEGENBAUR and W. K. PARKER, and their im- 
plicit reliance on small textbooks are greatly to be deprecated. 
London, April 14, 1897. 
Nachdruck verboten. 
Zu den Zellbrücken in der glatten Museulatur. 
Von Dr, Hermann TRIEPEL, 
Assistenten am anatomischen Institute in Greifswald. 
Zellbrücken in der glatten Musculatur von Säugetieren wurden 
beschrieben von KULTscHIzKY !), BusacHı?), BARFURTH ?), KLECKLI®), 
1) Kurrscaizey, Ueber d. Art d. Verbindung d. glatten Muskelfasern 
mit einander. Biolog. Centralbl., Bd. 7, 1887—1888, S. 572. Infolge 
eines Druckfehlers ist als Verfasser Kultschitzny angegeben. 
2) Busacur, Ueber d. Neubildung von glattem Muskelgewebe. Beiträge 
zur pathol. Anatomie u. allg. Pathol. v. ZırsLer und NauwErck, Bd. 4, 
Heo. 117. 
3) Barrurts, Ueber Zellbrücken glatter Muskelfasern. Verhandl. d, 
X. internat. med. Congresses in Berlin, Bd. 2, 1. Abt., 1891, S. 7. 
Derselbe, Ueb. Zellbrücken glatter Muskelfasern. Arch. f. mikroskop. 
Anat., Bd. 38, 1891, S. 38. 
4) Kreckı, Experiment, Unters, üb. d. Zellbriicken in d. Darmmusculatur 
d. Raubtiere. Diss. Dorpat, 1891. 
