40 



Einar Lönnberg, 



usual in an anterior and a posterior branch. The former of these can 

 be followed just above fissura rhinencephali almost to the anterior end 

 of the prosencephalon j list as in Ovibos according to Retzius' figures 

 (1. c. Pl. XX I II rigs 3 and 5). The sulcus suprasylvius is very strongly 

 curved around the proc. acuminis fiss. Sylv. In this respect Cephalophus 

 differs widely from Moschus (Krueg's Taf. XXI 1. c), but agrees better 

 with Gazella. It is uncertain whether the strongly curved shape of 

 this furrow is a primitive characteristic among the Ungulates or not, 

 when one considers that it is comparatively straight in Moschus and 

 Gervicornia but strongly curved in Sus, Ovibos and in some Antelopes 

 etc. On the whole it seems to vary a good deal in Gavicornia. From 

 the anterior portion of the sulcus suprasylvius extends in this Cephalophus 

 a branch which continues vertically to the median line. This is the 

 processus (Krueg) or ramus (Retzius) superior of this furrow. How 

 the posterior ramus of this furrow ends cannot be ascertained. The 

 sulcus coronalis stands in open connection with the upper ramus of 

 sulcus suprasylvius. In this respect it seems to agree with the condi- 

 tion found in Gazella according to Krtteg (1. c. Taf. XXII ), but differs 

 from the ovine and bovine tribes. The condition prevailing in Cepha- 

 lophus seems to be the primitive one as it is also to be observed in 

 several Gervicornia as well as in Moschus and Tragulus according to the 

 drawings of the author quoted. 



As tiie homologen of the sulcus ansatus I take a short trans- 

 Averse furrow which in front of the ramus superior sulc. suprasylv. from 

 the median line extends transversally towards sulcus coronalis without 

 quite reaching the same. 



On the posterior half a w ell developed sulcus lateralis is seen. 

 Parallel to the same and between it and the sulcus suprasylvius another 

 well developed furrow is seen, although shorter. Such a furrow is in 

 a similar situation represented in Kbueg's figures of the brain of Ga- 

 zella and of that of his Lophotragus (Elaphoclus). But in the others the 

 arrangement seems to be different. On the median side of the sulcus 

 lateralis there is a faint longitudinal impression indicating that in the 

 adult a furrow might be developed there as in Gazella, Rupieapra, 

 Capra etc. according to Krueg. The sulcus splenialis is also in this 

 stage somewhat visible from above as in Gazella. 



Although the short notes about the brain of these specimens 

 are incomplete they tend to show that there is a somewhat greater 

 likeness between Cephalophus and Gazella with regard to this organ 



