MIOLAXIID.E. 



161 



The type species. Skull much smaller than that of M. oweni, 

 with the second pair of peripheral protuberances (horn-cores) stout, 

 conical, and directed upwards, backwards, and more or less outwards ; 

 anterior pair quite distinct from second pair ; parietal pair of mode- 

 rate size ; frontal region broad and flat, without distinctly denned 

 tuberosities. Terminal segments of caudal sheath elongated, with 

 the protuberances of adjacent segments comparatively small and 

 widely separated from one another. 



Hab. Lord Howe Island, Australasia. 



The following specimens, or their originals, were obtained in a super- 

 ficial coral-sand deposit in the island mentioned, ivhich may be 

 of Pleistocene age. 

 R. 675. The imperfect cranium. The type specimen. Figured by 

 (Fig.) Owen in the ' Phil. Trans.' for 1886, pi. xxx. fig. 1, and 

 pi. xxxi. fig. 1 ; and also by Huxley in the ' Proc. Roy. 

 Soc' vol. xlii. p. 235, fig. 3. The "horu-core" of the 

 left side is entire and directed mainly upwards and back- 

 wards. The right quadrate and the palatal ridges of the 

 left side are likewise well shown. 



Presented by R. Fitzgerald, Esq., 1885. 



R. 675 a. The " horn-core " of the right side. Figured by Owen, op. 

 (Fig.) cit. pi. xxx. fig. 2. Presented by R. Fitzgerald, Esq., 1885. 



R. 675 b. Part of the right side of the parieto-frontal region, 

 showing the three protuberauces. The "horn- cores" are 

 largely directed outwards, as in the following specimens. 

 Presented by R. Fitzgerald, Esq., 1885. 



R. 906. Cast of the nearly entire skull, with the first two cervical 

 vertebrae and the hyoids still attached. The original, 

 which is preserved in the Museum at Sydney, is figured 

 by Owen in the ' Phil. Trans/ for 1888, pis. xxxi., xxxii. 

 The mandible is retained in its natural position, and the 

 whole of the palatal surface is exposed. Remarks on the 

 structure of the palate and the relations of the cervical 

 vertebrae are made by Boulenger in the ' Ann. Mag. Nat. 

 Hist.' ser. 6, vol. iii. pp. 139, 141. 



Made in the Museum, 1887. 



R. 907. Cast of the posterior portion of the cranium. The original 

 of this specimen, which is of larger size than the pre- 

 ceding, is preserved in the Museum at Sydney, and is 

 figured by Owen, op. cit. pis. xxxiii., xxxiv. 



Made in the Museum, 1887. 



pari ii r. M 



