R. Lyclekker — Distribution of the Siwalik Fauna. 489 



EXPLANATION OF PLATE XVI. 



Fig. 1. Eestored outline figui-e, PhilUpsia scabra, H. Woodw. Enlarged three 



times nat. size (the thoracic segments are ideal). 

 ,, 2. Outline figure of pygidium of Griffit hides Carnngtooiensis, Eth. MS. 



Enlarged three times nat. size. 

 „ 3. Outline figure of pygidium of PhilUpsia earinata, Salter, MS. Enlarged 



three times nat. size. 

 ,, 4. Eestored outline figure of head of Griffithides brevispinus, H. Woodw. 



Enlarged twice nat. size. 

 , , 5. Restored uutline figure of Griffithides glabei-, H. "Woodw. Enlarged twice 



nat. size. 

 ,, 6. PhilUpsia Leei, H. "Woodw. Outline figure of head, enlarged three times 



nat. size. 

 ,, 7. Another specimen of the same, showing some of the thoracic segments and 



the pygidium. Enlarged three times nat. size. 

 ,, 8. PhilUpsia minor, H. Woodw. Outline of an almost complete specimen, 



enlarged eight times nat. size. 

 „ 9. PhilUpsia tiiinor, H.Woodv^. Outline figure of restored head-shield, enlarged 



three times nat. size. 

 ,, 10. PhilUpsia CUffordi, H. Woodw. Outline figure of pygidium, enlarged three 



times nat. size. 

 „ 11. PhilUpsia articulosa, H. Woodw. Outline figure of pygidium, enlarged 



four times nat. size. 



Figs. 6 to 11 are from the lower Cidm-shales of Waddon-Barton near Chudleigh, 

 Devonshire, and will be noticed in the December Number. 



[To be continued in our next Number.") 



III. — Note on the Distribution in Time and Space of the Genera 

 OF Siwalik Mammals and Birds. 



By E. Lydekker, B.A., F.G.S., F.Z.S. 



HAYING completed the description of the mammals and birds at 

 present known from the Siwaliks of India and Burma (a 

 list of the former being given in the September number of this 

 Magazine, pp. 426-8), I have thought it well to publish a short 

 account of the distribution in time and space of the Siwalik genera 

 of these two classes, as a prelude to a more extended notice, which I 

 hope to give in the " Palseontologia Indica " when I have completed 

 the description of the whole vertebrate fauna of the Siwaliks. 



The first part of the following table exhibits the approximate distri- 

 bution in space at the present day of all the existing Siwalik genera, 

 and also shows the date of the origin in the geological series of 

 Europe of those genera which occur fossil there or elsewhere. Those 

 names which have no letters after them are not found fossil in other 

 regions. The second part gives the distribution of the extinct 

 genera in space ; and also in the geological series of Europe. 



The equivalents of the abbreviations are as follows, viz. PL 

 = Pleistocene ; U. P. = Upper Pliocene; L. P. = Lower Pliocene; 

 U. M. = Upper Miocene ; M. M. = Middle Miocene ; L. M. = Lower 

 Miocene; U. E, = Upper Eocene. The Pikermi and Mont Leberon 

 beds are classed with the Lower Pliocene, and the Eppelsheim beds 

 with the Upper Miocene. The notes of interrogation indicate that 

 there is a certain amount of doubt in the generic determination. 



