Literary Notices. vii 



fusion of terminology which has, however, been completely cleared up 

 by the combined efforts of several very recent authors. Briefly, the 

 "lobus trigemini" of Acipenser is now definitely known to be exclu- 

 sively a lateralis center and should be termed the lobus lineae lateralis 

 (Johnston). It has nothing to do with the innervation of terminal 

 buds. The same is almost certainly the case regarding the so-called 

 lobus trigemini of elasmobranchs, as Johnston has pointed out in the 

 last issue of this Journal (p. 6i). It doubtless does innervate 

 some (but not necessarily all) of the ampullary organs, these 

 being modified lateralis organs. The so-called lobus trigemini of 

 teleosts (e. g., Ameiurus), however, is certainly a center for 

 fibers from terminal buds of the outer skin and should be termed 

 the lobus facialis. Kingsbury suggested these homologies in this 

 Journal in 1897 and all subsequent research has confirmed them. 

 That Allis has perpetuated the confusion of these structures at so late 

 a day as this is striking illustration of the value of the suggestion of a 

 recent writer that the term lobus trigemini should be finally dropped 

 from our nomenclature at once. When once these relations are 

 clearly recognized, the whole morphology of the cutaneous sense organs 

 of the fishes, and of their centers in the brain as well, becomes for the 

 first time intelligible and it is greatly to be regretted that the confusion 

 of the past century should be carried over into the new, as Mr. Allis 

 seems to have done in this paper. This is the more surprising since it 

 is to him that we owe one of our most convincing proofs of the mor- 

 phological distinctness of the lateral line system as a whole. 



c. J. H. 



Edinger on tho Selachian Cerebellum.' 



Professor Edinger's late contribution upon the selachian cerebel- 

 lum contains points of special interest. Under ^^ Form und Schichtung^' 

 the author describes briefly the general form of the cerebellum and its 

 layers, and the nucleus lateralis cerebelli. This nucleus is situated in 

 the midst of the most caudal fibers of the "Kleinhirnschenkel" and 

 may represent Deiter's nucleus of higher vertebrates. More special 

 attention is given to the " Faserung." The fiber tracts are treated in 

 three categories, "Eigenfasern," "Verbindungen des Kleinhirnes mit 

 anderen Hirntheilen," "Fasern aus den sensiblen Hirnnerven." The 

 ^'Eigensystem" is very pronounced. Besides fibers uniting parts of 



' L. Edinger. Das Cerebellum von Scyllium canicula. Archiv ftir Mikro- 

 skopischjs AnaioTnie und Entwicklnngsgeschichte, 58 Bd. 4 Heft, pp. 661-677, Taf. 

 XXXIII und XXXIV. 



