OTHER FIOVRES OF THE BRAIN. 493 



(18) Owen : 25, PI. 20 ; Fig. 1-3, dorsal, lateral and mesal aspect of the hraln of the 

 Cheetah Felia jvbata, shaded ; Fig. 4-6, the same of the cat, outline. The former are 

 somewhat vague, especially as to the Sylvian fissure ; the latter are clear, and correct 

 excepting the non-extension of the F. poatrhinaMs in Fig. 5, and the indication upon Fig. 6 

 of an improbable fissure near the caudal end of the hemisphere. 

 ' (19) Owen : A, III ; Fig. 83, dorsal aspect of cat's brain. Unacknowledged, but evi- 

 dently copied from the very poor figure of Bell (A). 



(20) Owen : A, III ; Fig. 86, the mesal aspect of the right hemisphere ; apparently 

 original. A good outline diagram, excepting the presence of the line marked (18), pur- 

 porting to represent the F. lambdoidalis, and apparently the same as shown in Fig. 3 and 6. 

 Whether or not such a fissure exists in the Cheetah, or whether, if present in any feline 

 brain, it is the homologue of the " lambdoidal " or " occipito'parietal " fissure, need not be 

 discussed here ; but among the many (over 200) cat's brains examined by us, none have 

 presented any fissure in that region. Probably the line was accidentally introduced or 

 may represent a vascular furrow (§ 1841). 



(21) Owen: A, III; Pig. 91, the lateral aspect; an outline diagram, apparently 

 reduced and slightly changed from the same author's Fig. 5 (25, PI. 20). The superorbi- 

 talU, however, has disappeared, and the diagonalis is made, incorrectly, to join the rhinalis. 



(22) Pansch : 1, Taf. XIV, XV ; Fig. 23-38, dorsal, lateral and mesal aspects of the 

 hemispheres of adult, new-born and fcetal cats. These are excellent original diagrams of 

 the fissures. 



(23) Serres : A, PI. XIV ; Fig. 264, 265, the lateral and dorsal aspects of what pur- 

 ports to be the brain of a lion, but, as remarked by Leuret (Leuret et Gratiolet, A, PI. 5, 

 p. 10), is really that of a cat. 



(24) Spurzheim : A, PI. IV ; Fig. 5, dorsal aspect of a somewhat distorted brain. 



(25) Stowell, T. B. : i ; Fig. 1, 2, ventral and lateral aspects of the cat's brain, with 

 special reference to the ectal origins of the cranial nerves ; the fissures and other parts 

 are shown diagrammatically ; Fig. 3-12, ectal nerve origins and distribution of the vagtts. 



(26) Tiedemann, F. : A, Tab. Ill ; Fig. 3-5, dorsal, ventral and mesal aspects of a 

 lion's brain ; original and mainly accurate ; Fig. 6, the brain " Felis nondum aduiti, quod 

 cerebro Leonis persimile est." Unless the author had positive knowledge as to the imma- 

 turity of this brain, it must be regarded as that of an adult domestic cat. 



(27) Wilder : 11 ; P). I, Fig. 1, 2, portions of the cerebellum, showing the vermis 

 and the Lobulus appendicularis ; PI. Ill, Fig. 15,17, dorsal and lateral aspects of the 

 hemispheres, diagrams of the fissures ; PI. IV, Fig. 18, 19, lateral aspect, young Asiatic 

 and African lions, fissural diagrams. 



(38) Wilder : 8 ; Fig. 1, 2, fissural diagram.s of the lateral and mesal aspects. 



(29) Wilder : Id ; PI. 1-3, Fig. 1-5, the dorsal, lateral, ventral, mesaJ, cephalic and 

 caudal aspects of the entire brain or of the hemispheres ; PI. 3, 4, Fig. 7-20, sections and 

 dissections illustrating the gross anatomy. 



THE CEKEBRUM AND ITS FISSURES. 



§ 1335. Form of the Cerebrum.— As compared with that of 

 most dogs, the cat's cerebrum is remarkable for its width. The 

 average width is 34-37 mm. With four well preserved adult brains, 

 taking the width at 100 as the standard, the lengths were respect- 

 ively 93, 97, 100 and 103, while the heights were 75, 67, 71 and 72. 

 In round numbers, then, the lateral and longitudinal dimensions of 



