1903.] ox HAIR-WHORLS IX THE OKAPI. 337 



measurements) and the cheek-teeth veiy much smallei- in cliametei-, 

 their transverse and longitudinal diameters subequal. In H. glaber 

 the transverse diameter of the middle tooth considerably exceeded 

 the longitudinal. Palate ending almost immediately behind the 

 last molar. Incisors feebler than in H. glaber, the inner half of 

 their anterior surface slightly concave, in correspondence with the 

 ill-defined grooves found in this position in H. glaber. General 

 shape of lower jaw as in H. glaber, but the teeth equally modified 

 with those of the upper. 



External charactei-s, apart from size, apparently quite the same 

 as in H. glaher, but the tail has been lost in the single specimen. 



Dimensions : — 



Head and body (approximately) 94 mm. ; hind foot 20"5. 



Skull — front of nasals to junction of sagittal and lambdoid crests 

 19 mm. ; greatest zygomatic breadth 16'8 ; nasals 6*8 x 3'4 ; inter- 

 orbital breadth 7"3 ; intertemporal breadth 5"6 ; palate, length 

 from henselion 10'3 ; diastema 7 ; combined length of three cheek- 

 teeth 3"2 ; transverse diameter of middle tooth 1'2. Lower jaw, 

 back of angle to front of symphysis 18"6 ; to back of coronoid 11 ; 

 lower tooth-series 3"3. 



Hab. " Between Ngomeni and Kinani," Makindu country, 

 British East Africa. 



Type. Male. B. M. No. 98.9.25.3. Collected 31 October, 1896, 

 and presented by Dr. W. J. Ansorge. 



Dr. Ansoi-ge had noticed that this HeterocephaUis "was throwing 

 out earth with its hind feet from a tiny circular hole at the 

 bottom of a small ci-ater- shaped mound of red earth." 



Mr. G. A. Boulenger, F.R.S., exhibited a young hybrid Newt 

 (Molge marmorata (J X M. cristata 5 ) bred by Dr. Wolterstorfl", 

 of Magdeburg, in his aquarium, as reported in the ' Zoologischer 

 Anzeiger,' Sept. 21, 1903. This specimen agi^eed in all external 

 characters with M. blasii de I'lsle, of which one of the original 

 specimens, from near Nantes, S. Brittany, forming part of 

 M. Lataste's collection, was also exhibited. 



Prof. E. Ray Lankester, F.R.S., exhibited two drawings repre- 

 senting the arrangement of the hair on the fron to-parietal surface 

 of the head of two specimens of Okapi. The drawings are re- 

 produced in text-figs. 41 and 42. Text-fig. 41, p. 338, is from the 

 subadult female sent over by Sir Harry Johnston, described by 

 Prof. Lankester in the Trans. Zool. Soc. vol. xvi. p. 279, and now 

 mounted and exhibited in the Natui-al History Museum. The 

 second drawing (text-fig. 42, p. 339) is from a, smaller specimen of 

 an apparently adult female in the possession of the Hon. Walter 

 Rothschild at Tring, by whose kind permission the drawing is 

 published. Prof. Lankester made the following remarks : — 



The hair is represented diagrammatically in both cases, the 

 arrow-heads corresponding to the free ends of the hairs. 



Proc. Zool. Soc— 1903, Vol. II. No. XXII. 22 



