G86 dr. e. lonnberg on the [June 19, 



In view of these considerations, it seems difficult to deny that 

 cases of inheritance of acquired characters have been brought 

 forward. It would appear at any rate to be a choice between this 

 Lamarckian interpretation and the view of Professor Weismann, 

 that these useful directions of variation have been produced by the 

 adaptive requirement, by means of selectional processes within 

 the germ. 



Notes. 



Exceptions found among Ungulates to ordinary slope on extensor surface of 

 ulna are as follows : — 



Oryx gazella. Oryxbeisa. Strepsiceros kudu. Oreascanna. Alcesmachlis. 

 Baphicerus canipestris. Baphicerus melanotis. Ourebianiqricaudata. Ourebia 

 hastata. Tetraceros quadricornis. Nesotragus moschatus. Cephalophus 

 grimmi, C. rufilatus, C. leucogastris, C. abyssinicus, C. dories. Pudua humilis. 

 Nosehus moschiferus. Xenelaphus antisiensis. Hydropotes inermis. Dor- 

 celaphus bezoarticus, D. americanus, I), hemionus. Cervulus muntjac, C. reevesi, 

 C. lachrymans. Capreolus caprea. Elaphodusmichiauns. Ccrvus alfredi, C'.por- 

 cinus, C. axis, C. duvauceli, C. elaphus, C. dama, C. cashmirianus. 



Also certain Cbevrotains and Suidae noted. 



Be A. Ungulates in which an Inguinal Whorl is found. 



Bubalis caama. Bangifer tarandus. Ccrvicapra fulvorufula. Cervicapra 

 arundinum. Colus thomasi, C. bwffbni, C. vardoni, C. leche. Equvs hemionus. 

 Bos sondaicus, B. indicus. Ovis ophion, O, amnion, O.sairensis, O.poli. Capra 

 pyrenaiea. Saiga tartarica (present in male, absent in female). Gazella 

 grant i, G. mhorr. Antilocapra americana. Cephalophus dona/is. Cervus 

 kuhli, C. elaphus. Camelus bactrianits. Lama huanacits. 



BcB. Ungulates in which a Post-Humeral Whorl is found. 



Strepsiceros kudu. Bangifer tarandus. Cobus leche. Equus hemionus. 

 Equus burchelli (young). Bos sondaicus, B. depressicornis. Oris ophion, 

 0. amnion, 0. sairensis, 0. poli. Antilocapra americana. Dorcelaphus 

 americanus, I), dichoiomvs. Ehphurus davidianus. Lama huanacus. 



4. On the Structure and Anatomy of the Musk-Ox 

 [Oviboa moschatus) . By Dr. Einar Lonnberg. 



[Eeceived April 25, 1900.] 



Contents. 



Sect. 1, The Development of the Horns, p. 687. 

 „ 2. Description of tbe Hoofs, p. 694. 

 „ 3. Description of the Skull, p. 695. 



„ 4. Comparison between the Skull of Ovibos and that of Budorcat, 

 p. 715. 



In further elucidation of the relationships of the Musk-ox, 1 

 beg leave to offer the following remarks in continuation of those 

 read before the Society on February 20th last \ 



1 See P. Z. S. 1900, p. 142. 



