1904.] ox ANEURYSMS IN A JAGUAR AND A TURTLE. 5 



pygal black band, this band being represented in those animals 

 only by a scarcely perceptible dai-kening. The black facial bands 

 were unusually sti'ong and sharply defined, that running through 

 the eye being considerably more developed than in the other 

 forms. There was also a very faint trace of a dark lateral band. 

 The fur of the neck from the withers to halfway up the neck was 

 reversed forwards along the middle line. 



The skull was conspicuously smaller than in eithei' of the two 

 allied subspecies, but was generally similar in details. The horns 

 had the type of curvature characteristic of the true Abyssinian 

 soemmerringii, but wei-e thinner, longer in proportion to the size 

 of the skull, their basal, parallel j)ortion was longei', and they were 

 less widely expanded above, as shown in the figure ; the tips were 

 very abruptly curved inwards. 



The measurements of the skull and horns were as follows : — 



Skull : greatest length 219 mm., basal length 198, greatest 

 breadth 98 ; muzzle to orbit 118; nasals 57 X 24 ; nasal opening 

 61 X 25 ; gnathion to front of anteinor premolar 55 ; length of 

 upper tooth-series 65. 



Horns : length round curves on front and inner asj^ect 333 mm. 

 (13"1 in.) ; circumference at base 120. 



Equally adult skulls of soenimfirringii and herbermm wei-e about 

 220 mm. in basal length. 



The habitat was south of the Dana, River, in the Boran countiy, 

 about 5° N. lat. 



Mr. Thomas considered that this Gazelle represented a new 

 subspecies of G. soemmerringii, and proposed to name it G. s. hutteri 

 in honour of its discoverer, by whom the type specimen had been 

 presented to the National Museum (B. M. No. 4.1.20.1). 



Mr. Macleod Yearsley, F.R.C.S., F.Z.S., exhibited an aneurysm 

 of the abdominal aorta from a Jaguar and photographs of one in a 

 Turtle. Both specimens were in the College of Surgeons' Museum, 

 the latter being Hunterian. The aorta in the case of the Jaguar 

 was extensively atheromatous. The following are the descriptions 

 of the specimens : — 



" 3212. The abdominal aorta of a Jaguar (presented to the Royal 

 College of Siu'geons by the Council of the Zoological Society of 

 London), of which a small portion of the wall is dilated into a 

 spheroidal aneurysmal sac, about two inches in its chief diameter. 

 The sac is nearly full of firm laminated coaguhim. Around its 

 mouth, and in isolated patches on several other pai-ts of the arterj", 

 tlie internal coat appears slightly thickened, and there are deposits, 

 probably of fatty matter, beneath it.' Over many of these deposits, 

 also, small portions of the inner coat have been removed, leaving 

 smooth- edged apertures like ulcers, some of which are very close- 

 set, and give the remains of the internal coat in some parts an 

 irregular reticulated appearance. Wherever this disease has made 

 much progress the artery is slightly dilated. 



