PONTIA FREYJERI. 55 



Der Fliigel ist am Grande stark verschmiilert, nach dem Hinterrande zu stark 

 verbreitert; dcr Hinterrand ist stumpf gekerbt; in die Bncht der Kerbe limit eine 

 Lilngsfalte, in die Mitte derselben cine Ader aus, die man aber nicht bis zur Inser- 

 tionsstelle verfolgen kann; die iiussere Fliigelspitze fehlt; ebenso ein Stuck des 

 Ilinterrandes an der [183] Nahtseite. Von den Adern kann man nnr die einfache 

 v. analis in ihrer ganzen Liinge verfolgen; sie ist dem Nahtrande sebr genahert. 

 Die Farbe des Fliigels ist bell gelbbraun und war im Leben wohl weiss oder gelb- 

 lieh. Der Hinterrand ist von der Mitte an bis zum Aussenrand scbwarz, nnd zwar 

 wird diese dunkle Partbie auswiirts breiter; nngefahr in der Fliigelmitte gebt vom 

 Aussenrand ein viereckiger, dunkler Fleck -ans, welcher dieselbe Grosse, Form 

 nnd Stellung bat, wie der schwarze Fleck bei Pieris Daplidice; 'ein zweiter klein- 

 erer, rundlicber Fleck liegt niiher dem Hinter- und Nahtrande nnd entspricht 

 dem, an derselben Stelle liegenden, Flecken der Unterseite von Pieris Daplidice. 

 Am Fliigelgrnnde bemerkt man den Scbenkel nnd Schiene eines dunnen Beines, 

 das wobl diesem Thiere angehort hat. 



This insect evidently belongs to the genus Pontia, judging from the disposi- 

 tion of the markings of the upper surface of the fore wings (PI. II, fig. 18) ; this 

 is the only thing we have here to guide us, although the drawing made for us in 

 Vienna seems to show that with great pains the neuration of at least a part of the 

 apex might be traced and lead to more positive determination. The fossil species 

 seems best comparable with P. Protodice (PI. IT, fig. 12) of IN". America, although, 

 as suggested by Heer, most nearly resembling P. Daplidice, of European species. 

 The dark spot at the apex of the cell appears to cover a larger area than in P. 

 Protodice, extending Avith equal breadth almost to the costal margin, and also 

 covering a considerable space at the base of the subcosto-median interspace, equal 

 indeed to the entire width of the portion of the spot within the cell. The region 

 below this spot, next the base of the loAver median interspace, is also rather faintly 

 suffused with griseous tints. The precise extent of the subcostal spots midway 

 between the cell and the apex cannot be determined, owing to the imperfect state 

 of the fossil; but they evidently form a connected series as much larger than the 

 similar spots in P. Protodice as the cellular spot, and extend from the costal 

 margin to the lowest subcostal nervures, expanding considerably baseward in the 

 upper half of their course. There is no spot in the upper median interspace, as 

 in P. Protodice, but, instead, a precisely similar one in the middle of the apical 



