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Show 1903.] ON HAIR-WHORLS IN T H E OKAPI. 337 measurements) and the cheek-teeth very much smaller in diameter, 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 //. 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 characters, apart from size, apparently quite the same as in H. glaber, 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 ; interorbital breadth 7-3 ; intertemporal breadth 5-6 ; palate, length from henselion 10'3 ; diastema 7 ; combined length of three cheekteeth 3*2; transverse diameter of middle tooth P2. 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. Ansorge had noticed that this Heterocephalus "was throwing out earth with its hind feet from a tiny circular hole at the bottom of a small crater-shaped mound of red earth." Mr. G. A. Boulenger, F.R.S, exhibited a young hybrid Newt {Molge marmorata cf X M cristata 2 ) bred by Dr. Wolterstorft", of Magdeburg, in his aquarium, as reported in the ' Zoologischer Anzeiger,' Sept. 21, 1903. This specimen agreed in all external characters with M. blasii de l'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 representing the arrangement of the hair on the fronto-parietal surface of the head of two specimens of Okapi. The drawings are reproduced 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 Natural 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, V O L . II. No. XXII. 22 |
