204 Mr. K. 11. F. Rippon on a new 



JScaphidium incisum, sp. n. 



Aiijrustato-ovatmu, niirrum, nitidum, supra punctulatum; cJ tibiis 



ant ice iiiconspicuc cmarginatis. 

 L. 4i-4.i mill. 



Somewhat elliptical, black, sliining ; the head and thorax 

 clearly, not thickly punctured, transverse punctures of the 

 latter well-marked and similar throughout; the elytra with the 

 .'iutural stria punctate, continuing as in the last species along 

 the greater part of the base, dorsal surface clearly and evenly 

 punctured, with little or no indication of linear arrangement ; 

 legs and antennae black, male with enlarged anterior tibiae, 

 the enlargement being feebly emarginate on the inner edge ; 

 tarsi brownish; antennaj pitchy red or black at the base. 



Bab. Miyanoshita, Nikko, and Mayebashi. Apparently 

 scarce. 



Cyparium sihiricum, Solsky. 



Hah. S. Yezo, abundantly, and on the main island as far 

 south as Chiuzenji, more rarely. One example in Higo. 



L. — Description of a neic Transitional Form of Ornithoptera 

 belonginq to the Suhgenus Priamoptera. By Robert 

 H. F. EiiPPUN. 



In the August number of the 'Annals'* I described a 

 beautiful and most interesting new species of the genus 

 Ornithoptera closely allied to 0. aruana^ Feld., which 

 evidently linked the genus most closely with its section 

 Priamoptera. I have now the privilege, by the courtesy of 

 Mr. Elwes, of describing a still more important and inter- 

 esting novelty discovered by Mr. Uoherty in the Island of 

 Talaut, which may ultimately throw miicii light on the 

 phylogenetic history of the genus, inasmuch as it may be 

 regarded as one of the transitional forms, some of which have 

 probably long since perished, which would enable us to link 

 to"-ether in a natural series all the many nominal species 

 which we find it necessary to admit into tiie subgenus Pom- 

 peoptera, and even to suggest, on the side of the female at 



* 'Annals,' Aug. 1892, p. 193; also in part v. of my * Icoucs 

 Ornithopteroruui,' where a plate of coloured fifrurcs is given. 



