SYNOIfYMS AND REFERENCES. 491 



§ 1339. Tuber cinereum (oz.), T., aw.— Fig. Ill, 113, 116-118, 123 ; PI. II, Pig. 8, 4; 

 PL III, Fig. 5, 9, 11 ; § 1074 (E). Gray, A, 631 ; Quain, A, II, 535. 



The gray eminence at the cephalic part of the Area cruralis just caudad of the chiasma. 

 To it is attached the hypophysis by the infundibulum which covers the mesal Foramen 

 infundibuli. The Tuber cinereum is really continuous with the -terma, but the chiasma 

 forms an eotal interruption. 



§ 1380. Tuberculum Rolando, Tbd. Mol.—% 1190. Gray, A, 613; Quain, A, II, 510. 

 According to the American Jour, of Neurology, etc. (1, 103), the elevation herein named 

 Area malis is homologous with the Tuberculum Rolando or Tvite/jfcolQ cinereo. , , , 



§ 1831. Valvula (az.), m— Fig. 111-114, 117; PI. II, Fig. 4; PI. Ill, Fig. 7 ; §§ 1141, 

 1165. Gray, A, 631 ; Quain, A, II, 553. 



8yn. — Valvula Vieussenii, w. cerebelli, vv. Willisiana, w. magna cerebri, velum 

 interjectum cerebelli, velum meduUare anticum. '■■■.■■ ■..^-. 



The delicate and transparent roof of the longer and cephalic portion of the epicoelia. 

 Cephalad it is continuous with the postoptioi, and caudad with the cerebrum ju§t,.ce|)Jia- 

 lad of the highest part of the epicoelia. Near its cephalic end arise the NN. trochleargs.. ■ , 



We have not ascertained whether the valvula is covered by a fold of pia j apparently 

 there is between it and the overhanging cerebellum only a little connective tissue. .Neither 

 do we know the precise constitution of the delicate substance of the valvula ; jt is so ,thin 

 that it might well be included with the other telae as the epitela. 



§ 1333. Velum (interpositiim), (oz.), «?;— Fig. 133 ; §§ 1143; 1144; 1156. Grtiy, A,'638 ; 

 -^^ Quain, A, II, 545. 



As has been admitted elsewhere, our knowledge of the velum is incomplete, especially 

 in respect to its relation with the diatela. As commonly described, and as appears to be 

 the case in the cat, it i;^ the fold of pia between the dorsal aspect of the mesenceplifilon 

 and diencephalon and the ventral.aspect of the superincumbent fornix, a part of the pros- 

 encephalon. Theoretically, and doubtless actually in the embryo mammal, the two layers 

 of this fold are simply continuous at the line of junction of the prosencephalon with the 

 diencephalon ; but the . growth of the former and its recumbency upon the latter brings 

 them into contact, and perhaps their distinction is altogether lost. 



Primarily, too, the diencephalic. lay*r must have been in contact with the primitive 

 roof of the diacoelia and entered into the formation of the diatela ; but the close approxi- 

 mation and, perhaps, fusion of the two layers in the adult renders it possible to remove 

 them together, and the diatela which remains must consist, therefore, of merely the 

 endyma with the atrophied nervous substance of th6 roof. " ' ' ■"■ * 



The relations of the velum to the proplexus are referred to in § 1395. 



§ 1333. Vermis (cerebelli), (aiii.), vm.—Fig. 114 ; PI. I, Fig. 1,"3 ; PI. IV, Fig. 15 ; § 1300. 

 Huxley, A, 64. " ' ' " 



gyn,. — Lobus medius cerebelli. 



The name vermis seems to be used in anthropOtomy in a restricted sense for a portion 

 of the median lobe of the cerebellum, but Huxley designates by it the entire lobe. 



In the adult cat the vermis is markedly contorted, although tegular and symmetrical 

 in the new-born kitten (Wilder, 1 1, PI. I, Fig. 3). 



S 1334. Other Figures of the Brain, of the Cat or other Felidse.^The following 



list arranged alphabetically according to the names of the authors, includes all the works 



and papers known to us to contain figures of feline brains. Additions and corrections 



will be thankfully received. The figures represent the cat's brain unless otherwise 



.specified. _ , , 



