l)r J. E. (nay o/i the liirardius of New Zealaml. 115 



f, eye ; p c, pupal ove ; /", finper-sbaped proceasea ; //, lore foot ; 

 h f, liiiitltT foot ; p f, pupal feet ; s, stomach ; pv, proveiitriculus ; 

 wu", uiaxillie ; ;/«/, niamlibles ; />, palpi ; wm, muscles ; /r, tra- 

 cheal ; ffi, fatty bodies ; ( f, teniiiiuil lilament ; o, ova; s6,stig- 

 matic branchiie ; c b, eliitiuous baud ; ff o, geuital orifice ; a u, aual 

 oriHce ; ^;j, prunotum ; ir, winp:. 



JPig. 6. A portion of an o\ um. Tlie blastoderm has acquired several 

 lavers ; and in its mass are the polar cells, the diameter of which 

 isO-OlL' uiillim. 



yiy. 0. The same, rather later; the polar cells have separated into two 

 groups : «, furrow. 



JFiff. 7. The developing ovary removed from a larva contracted in folds ; 

 diameter 0031 mUlim. : e c, embryonal cells; «, nucleus of the 

 ovarian tube. 



Fig. 8. An ovary removed from a perfectly developed larva ; six embrjonic 

 ovarian tubes are visible in it, containing nuclei ; diameter 

 0"057 millim. : e r, embiyonal cells ; o t, ovarian tubes ; fi, nucleus. 



Fiff. 9. Ovarian tube from a young larva : v c, vitelligeuous cells ; ep, epi- 

 thelium ; », nucleus. 



Fi</. 10. Part of an ovarian tube (magn. 475 diams.). The left side of 

 this tigure represents the object seen on the surface, and the 

 right side the optical tnansverse section. The ovum (o) will 

 soon be detached. The vitelligeuous cells (r c) are only indi- 

 cated, and are too small; <y", terminal tilauunt ; ^r, terminal 

 chamber ; ej), epithelial cells ; ep', epithelial cells as seen at tlie 

 surface ; g c, germ-chamber ; o d, oil-drops ; g v, germinal vesi- 

 cle ; g s, genninal spot ; v c, vitelligeuous cells ; v, vitellus. 

 Diameter of the ovum (o) 0085 millim., of the germinal vesicle 

 00432 millim., of the vitelligeuous cells 00250 millim., of the 

 epithelial cells 0-0224 millim., of the germinal spot 0'0078 mil- 

 lim. ; length of the germ-chamber 0-044 millim. ; length of the 

 terminal chamber 0-1)22 millim., diameter of its nuclei 00085 

 millim. ; thickness of the terminal filament 0-0000 millim. ; 

 diameter of the oil-drops 0-0048 millim. 



Fig. 11. Portion of an ovarian tube at the moment of its division into 

 chambers, the contents being already divided, and the nucleus 

 in course of division ; magn. 030 diams. The lettering as in 



Fig. 12. A perfectly developed ovum in which the germinal vesicle is 

 visible, preserved in glycerine ; diameter of the germinal vesicle 

 (g v) 0-045 millim. : /, lobule surroimding the micropyle. 



XIV. — Notes on the Berardius of New Zealand. 

 By Dr. J. E. Gray, F.K.S. &c. 



Dr. Hector kindly sent me an early impression of Dr. Knox's 

 and his own paper on the Ztphiida', illustrated with five plates, 

 which is to be published in the third volume of the ^ Transac- 

 tions of the New-Zealand Institute.' It contains a figure of 

 the animal of BerardiuSj various parts of the skeleton, and the 

 details of two skulls. From it I give the following character 

 to the animal of this genus, which was previously known only 



