ON ZHBRA-HORSE HYBRIDS. 58 
lustrous. A casual glance showed that in the plan of his striping 
Romulus was utterly unlike his sire, and, when a careful ex- 
amination was made, it became evident that in the number and 
arrangement of the markings he was not unlike a Somali Zebra. 
As fig. 1 (Pl. II.) shows, the brow has been tattooed as if to 
represent a huge finger print. Instead of the four or five 
acutely-pointed frontal arches of his sire, there are fourteen 
rounded arches, that remind one of the face of the Somali Zebra. 
Instead of twelve cervical stripes, as in Matopo, there are in 
Romulus twenty-four cervical stripes, all of which can be traced 
into the mane. In having so many cervical stripes, he seems to 
be more primitive than even the Somali Zebra (in which I have 
never seen more than fourteen cervical stripes), but closely agrees 
with one of my Zebra mares when the shadow stripes are included. 
The shoulder stripe bifurcates higher up than in Matopo, and 
there are seven indistinct arches in the triangular space below 
the point of bifurcation. Behind the shoulder stripe there are 
nine (Plate III., fig. 1) fairly distinct vertical stripes instead of 
five, as in his sire (Plate I., fig. 1). Apparently corresponding 
to the three flank stripes so often seen in Burchell Zebras, 
there are in the hybrid three stripes in front of the stifle, which 
first run upwards and then arch backwards to end below the 
root of the tail (Plate III., fig. 1). In the triangular space 
between the first flank stripe and the ninth vertical body stripe 
are numerous narrow indistinct lines, some of which proceed 
towards the ventral band, while others join the first or great 
flank stripe. In line with these nearly transverse stripes there 
were at birth numerous spots arranged in nearly transverse rows 
over the loins and rump. Now that the hybrid is over a year 
old (Plate III., fig. 2) most of the spots have united to form some- 
what zigzag narrow bands, almost identical in their direction with 
the narrow stripes over the hind quarters of the Somali Zebra. 
On the left side the blending of the spots has advanced further 
than on the right. Counting from the shoulder stripe to the root 
of the tail there are forty-three stripes in the hybrid,—about the 
same number as in the Somali Zebra; in Matopo there are only 
five transverse stripes behind the shoulder stripe (Plate I., fig. 1). 
It seems to me the blending of the spots over the hind quarters 
of Romulus goes a long way towards proving that stripes are in 
