294 Mr. K. II. F. Rippon on a new 



Scaphidium incisuni, sp. n. 



Aiigustato-ovatum, nigrum, nitidum, supra punctulatum ; c? tibiis 



antice iuconspicue emarginatis. 

 L. 4i-4i mill. 



Somewhat elliptical, black, sinning ; the head and thorax 

 clearly, not thickly punctured, transverse punctures of the 

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

 sutural 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 antennce black, male with enlarged anterior tibiae, 

 the enlargement being feebly emarginate on the inner edge ; 

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



Bab. Miyanoshita, Nikko, and Mayebashi. Apparently 

 scarce. 



Cyparium siMricum, 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 new Transitional Form of Ornithoptera 

 belonging to the Subgenus Prianioptera. By Robert 

 H. F. RiPPON. 



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 

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

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

 esting novelty discovered by Mr. Doherty in the Island of 

 Talaut, which may ultimately throw much 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 

 together in a natural series all the many nominal species 

 which we find it necessary to admit into the subgenus Fom- 

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



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

 Ornithopterorum,' where a plate of coloured figures is given. 



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