Literary Notices. xiii 



of the sensory root of the Facial in Acipeiiser ; that the " lobi faciales" 

 in Lota from which the roots spring are directly continuous with the 

 Lobi glossopharyngei and Lobi vagales; and that, therefore, the Tuber- 

 culum impar (Lobus trigemini) of the Cyprinidae is the homologue of 

 the Lobi faciales. No structure which might be compared to the Lobus 

 trigemini of Acipenser was found in the Teleosts. Goronowitsch found 

 their homologue, however, "proximo-lateral of the cerebellar crest." 

 The internal origins and connections of the nerve-roots in Lota are given 

 in detail in comparison with the conditions found in Acipenser. 



A third portion of the paper is devoted to the analysis of the roots 

 composing the Trigemino-facial complex and to a discussion of their 

 distribution; the following points may be metioned. Ra7nus ophthal- 

 micus supcrficialis he finds to be derived from his Trigeminus II ; R. 

 ophthalmicus prof undus from Trigeminus I. In the composition of the 

 Hyo-mandibular it is found that, whereas in Ganoids it contains fibers 

 from the facial and Trigeminus II, in Teleosts it also receives fibers 

 from Trigeminus I. This fact he would explain on the supposition 

 that the suspensory apparatus has been pushed forward into the territory 

 innervated by the Trigeminus I, for which view some comparative evi- 

 dence is introduced. This has also, he beheves, influenced the mor- 

 phology of the Teleostean oblongata, — a suggestive thought. 



The Palatine nerve is derived from the facial and is thought to be 

 the homologue of the Nervus rostri interni Acipenser. The palatine 

 nerve of Acipenser he believes to be represented by the N. maxillaris 

 inferior in Lota which, therefore, equals the fusion of two distinct 

 nerves in Acipenser. 



This paper gives a helpful basis in facts for future comparative 

 work on the cranial nerves, although, it is felt, its value would have 

 been greatly enhanced had an analysis on the basis of function been 

 more closely held in view. His segmental classification is open to 

 criticism on many grounds. Sufficient evidence is not furnished of the 

 ventral root of his Trigeminus II, whereas there is evidence that it is 

 sensory. b. f. k. 



The Tagiis jVerre of Teleosts.^ 



This paper, especially when considered in connection with the 

 preceding, impresses upon the reader the need of comparative work on 

 the cranial nerves of fishes ; and also serves to illustrate the difficulties 

 and dangers attending the consideration of one of the cranial nerves 



1 Haller, Dr. B. Der Ursprung der Vagusgruppe bei den Teleostiern, 

 Festchr.f. Gegenbaztr. Vol. Ill, pp. 47-101, PI. I-IV. Leipzig, 1 897. 



