360 Mr. W. F. Kirby on new Species of 



to regard the two as identical. What relation, then, does the 

 ovum bear to the gemraule ? 



Finding a long time ago, viz. in 1859, that the seed-like 

 body of Spongilla and the so-called " winter Q.gg " of the 

 Bryozoa were so much alike ('Annals,' vol. iii. p. 331, pi. viii.), 

 I have been induced latterly to use the term " statoblast " for 

 the seed-like body or gemmule, but have not introduced it 

 here, as the latter terms are most generally understood. 



I have also omitted to allude to the peculiarities in the 

 ovigerous reproduction of Suherites domuncula (and there may 

 be many others which have not come under my notice), 

 in which the ova are deposited about the summit of a small 

 conical shell apparently enclosed by the sponge for this pur- 

 pose, in the form of yellow, corneous, spherical capsules 

 possessing a distinct and beautiful structure, preferring rather 

 to direct the reader's attention to my illustrated description 

 of this ('Annals,' vol. xii. 1883, p. 30) than to confuse him 

 with unnecessary detail, as I have already stated at the 

 commencement generally that neither the form, nor the loca- 

 tion, nor the composition of the elements of reproduction in 

 the Spongida are exactly the same in all species. 



P.S. — Having had to consult Keller's excellent memoir "On 

 the Organization and Development of the Chalinida " while 

 writing the above, I find that what I have stated of the 

 position and form of the ampullaceous sac &c. in the * Annals ' 

 for March last (p. 209) is amply confirmed by Keller's deline- 

 ation of the structure of his Chalinula fertilis (Zeitschrift 

 f. wiss. Zoologie, Bd. xxxiii. Taf. xviii. fig. 1). 



XLV. — Descriptions of neio Species of Papilionidse, Pieridge, 

 and Lyccenidas. By W. F. Kirby, F.E.S. 



In the present paper I give descriptions of one Papilio from 

 New Guinea, two Pierida? from South America, and sixteen 

 Lycffinidffi from Africa. The tailless African Lyctenida are 

 but little known ; and I have ventured to propose two new 

 genera for some of the species here described. Figures of 

 most of the species described in the present paper will probably 

 appear at a later period. The types are all contained in the 

 collection of Mr. Henley Grose Smith. 



