20 Eev. T. Hincks on tlie Polyzoan Avicularium. 



HesperiidsB. 



35. Pamphila venata. 



Hesperin vcnafa^ Bremer & Grey, Sclimett. N.-Ohina's, p. 10 (1853). 

 Pamphila venata, Meaetries, Cat. Mus. Petr. Lep. i. pi. v. fig. 7 (18-j5). 



(J , Posiette Baj, €orea, and Yokohama ; J" ? , Hakodate. 



36. Pamj)hila sylvatica. 



Pamphila sylraficn, Bremer, Bull. Acad. Pet. iii. p. 474 (1861) ; Lep. 

 Ost-Sibir. p. 34, pi. iii. tig. 10 (1864). 



Posiette Bay, Corea. 



Heterocera. 



Chalcosiidse. 



37. Pidorus atratus. 



Pidoms atratus, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. xx. p. 402 

 (1877) ; 111. Typ. Lep. Hat. ii. p. 9, pi. xxiii. fig. 9 (1878). 



Yokohama, in August. 



Litliosiidse. 



38. Setina micans. 

 Setina micans, Bremer & Grey, Sclimett. N.-China's, p. 15 (1853). 



Posiette Bay, N.E. Corea. 



The description by Bremer does not give a good idea of the 

 general colouring of the upper surface; he speaks of it thus, 

 " Corpore et alis ex flavo albido-mieantibus," and later on as 

 " shilling yellowish white," whereas the primaries are shining 

 white, with pale buff borders, and the secondaries pale buff; 

 the thorax is also white ; the head, collar, and abdomen buff. 

 Notwithstanding this incorrect or, at least, imperfect descrip- 

 tion of the ground-colour, every thing else in the description is 

 so exact that I cannot doubt tliat the species before me is 

 Bremer's insect. We have a large female (1| inch in ex- 

 panse) from Pckin. 



III. — On certain reifiarhable MocUfications of the Avicu- 

 larium in a Species of Polyzoon ; and on the Relation of the 

 Vihraculum to the Avicularium. By the Rev. Thomas 

 Hincks, B.A., F.R.S. 



The homology between the curious avicularian appendage 

 which is present on so many of the Cheilostomata and the 



