10 [June, 



From a comparison of the Orders, families, and genera of the 

 fossils obtained from Schambelen with those obtained from the 

 English Lias, it appears that the insect fauna of Switzerland, duriiag 

 this part of the Jurassic Period, was closely allied to that of England. 



The varied habits and modes of life of the Liassic Insecta are 

 highly suggestive of the probable land and freshwater conditions of 

 Europe, during the period of their existence ; and some of the species 

 lead to the inference of the contemporaneous existence of certain 

 Orders of animals, and of plants, of which no remains have been 

 preserved to us. 



In the second part, of this paper I shall enumerate the families 

 and genera of the Insecta obtained from the Oolitic rocks — including 

 the " Stonesfield Slate " and the " Purbecks " of the United Kingdom, 

 and the " Solenhofen Slate " of Bavaria — and I shall conclude with a 

 brief notice of the principal types of animal and vegetable life charac- 

 teristic of the Jurassic Period. 

 Surbiton, S.W. : April, 1879. 



DESCRIPTION OF A NEW SPECIES OF THE LEPIDOPTEROUS GENUS 



PAIS (Fam. AGARISTIBJEJ. 



BY ARTHUR G. BUTLER, F.L.S., P.Z.8., &c. 



The following very distinct new species has just been brought to 

 me by my cousin. Miss J. K. Lorimer, who has been staying for the 

 last two years at the Grordon Mission, Natal. 



Pais GtOedoni, n. sp. 

 Primaries sulphur-yellow, crossed by black lines nearly as in P. decora, Linnscus, 

 the chief difference being that the outer or discal line forms a less distinct g by union 

 with the reniform spot ; discoidal spots outlined in black, with black centres, the outer 

 spot with variable zone (throwing back processes to the orbicular and to a similar 

 circular spot below it, in the type specimen), the basal lines and the lower half of the 

 zone enclosing the spot on interno-median area deep red from the median to the in- 

 ternal vein ; a distinct siuuated grey-edged red stripe {not confounded with the other 

 markings) just beyond the black discal line ; a series of longitudinal black interncrvular 

 dashes from immediately beyond the red stripe to the outer margin, which is also black ; 

 fringe white, tipped here and there with black ; secondaries dark red with deeper, 

 almost plum-coloured, outer border, upon which are eight rather large orange spots ; 

 median vein and the commencement of its branches, together with the basal half of 

 the second median interspace, orange ; discocellulars dusky ; outer margin black ; 

 fringe of outer margin black at base, ochreous externally; fringe of abdominal margin 

 ochreous, extremely long; head black, spotted with sulphur-yellow; thorax sulphur- 

 yellow, longitudinally striped with black, the inner margins of the tegulse ochraceous ; 

 antennse and upper surface of palpi black ; abdomen bright golden-yellow, banded 

 with black ; legs black, banded with bright ochreous ; wings below altogether duller 

 than above, the black lines and zones on the primaries obsolete, excepting the com- 

 mencement of the discal line ; the pale areas ochraceous ; a black marginal line ; 

 pectus ochreous, streaked with white ; venter white, with black bars across the last 

 three or four segments. Expanse of wings, 2 inches. 



Tugela Eiver, South Africa. Type in B. M. 



British Museum : 3Iay, 18V9. 



