214 Eev. T. Hincks on the 



Many specimens. This species is evidently allied to P. 

 Bridgii, Math. (Proc. Zool. Soc. 1886, p. 349, pi. xxxiv. tig. 2) , 

 from Treasury Island and the islands of Bougainville Straits, 

 whence we have many specimens. The male differs in 

 having the band of submarginal spots on the primaries more 

 broken, and there are four subapical spots on the underside 

 hardly seen in the allied form. The female differs obviously 

 by having the discal series of spots miich more irregular, 

 whereas in the female of P. Bridgii they are. regular inter- 

 venal streaks. On the secondaries the submarginal row of 

 spots are rounder, less lunate, and further from the margin. 



We have a damaged female of this or an allied species 

 from Florida Island ; but without male examples we hesitate 

 to decide as to its position. 



Pa/pilio laarchus, sp. n. 



$ . Alis fuliginoso-nigris ; anticis fascia obliqua ultra celhilam 

 flavida venis quadripartita ; posticis fascia lata transversa cellulae 

 finem transducta lactescenti-albida, margine suo interno fere recto 

 externo profiinde serrato : subtus anticis ut supra ; posticis lunu- 

 lis rufo-aurantiis submarginalibus notatis, atomis paucis caeruleis 

 inter ramos medianos. Exp. 6'0. 



cJ adhuc ignotus. 



Hah. Rubiana Island ( C. M. Woodfoi-d) . 



Though we have only a single damaged female specimen 

 before us we can recognize its distinctness from that sex of 

 P. Woodfordi of the islands of Bougainville Straits. The 

 marks on the primaries are restricted to an oblique short 

 band beyond the cell, and there are no submarginal spots 

 or any near the anal angle. The band across the secondaries 

 is much wider. 



XXVIII. — The PoJyzoa of the 8t. Lawrence: a Study of 

 Arctic Forms. By the Eev. Thomas Hincks, B.A., 

 F.R.S. 



[Plates XIV. & XV.] 



The material on which the present Report is founded has 

 been entrusted to me by Sir J. W. Dawson, F.R.S., of 

 McGill College, Montreal, Mr. J. F. Whiteaves, of the 

 Canadian Geological Survey, and the authorities of the Mon- 



