Euphausiidæ. 1 3 



mation of the inner globule, or egg proper, a small quantity 

 of a granular matter, which seems to have entered the 

 cavity of the sphere through the external membrane, and 

 which I believe is derived from the other kind of spheres, 

 to be treated of below. 



Among the above-described oosphères are always found 

 a number of transparent globes exactly resembling the 

 oosphères both as to outward appearance and to size, but of 

 a very different nature, as indicated by the name sperma- 

 tospheres here proposed. They have also (see PL 1, fig. 3) 

 within them a somewhat more opaque body; but this body 

 exhibits several peculiarities not found in that of the 

 oosphères. It is, as a rule, somewhat smaller, and often 

 exhibits a somewhat irregular form; but the most striking 

 difference is that this body is not freely suspended within 

 the hollow of the sphere, as is the case with that of the 

 oosphères, but is invariably connected to its external coat- 

 ing by a number of tortuous chords of a rather firm chiti- 

 nous consistency. By the aid of these cords, the number 

 of which varies from a single one to no less than six in all, 

 the inner body is fixed within the sphere, so as generally 

 to occupy its centre, though not infrequently it is found, 

 unlike the oosphères, to be somewhat more approximated to 

 the upper pole of the sphere. All the cords turn to the 

 same side of the sphere, viz., the upper one, thoug'h their 

 points of insertion to the external membrane may lie at some 

 distance from each other. On a closer examination it is 

 easy to observe that these cords are more properly narrow 

 ducts, and that each of them arises from a cup-shaped basal 

 piece projecting from the inner body, and having at the base 

 an open net-work of chitinous rods (see figs. 3a, 3b). The 



Archiv for Math, og Nature. B. XX. Nr. 11. 

 Trykt den 2Gde Juli 18!)S. 



