342 
Part nr.— Ninth Annual Report 
Fig. 5. Slightly oblique view from the abdominal surface of the unknown 
larva (from egg represented in fig. 1) shortly after hatching. 
27th March 1891. x 33 
Fig. 6. Lateral view of the same placed on a slide. x 33. 
Fig. 7. Larva of the same form, about six days old, seen somewhat 
obliquely from below. 10th April 1891. 
Fig. 8. Lateral view of unknown post-larval fish, with peculiar teeth and 
long pectorals. Enlarged under a lens. 
PLATE XIII. 
Fig. 1. Ovum of brill fertilised with the milt of the turbot on 30th April, 
6th May 1891. The blastoderm has not quite enveloped the 
yolk. A series of minute globules occur round the large oil- 
globule. X 21. 
Fig. 2. One of the foregoing ova shortly before hatching showing the 
great development of brownish and black pigment in the 
embryo, 15th May 1891. x 36. 
Fig. 3. Hybrid brill (milt of turbot) of the first day, 15th May 1891. 
x42. 
Fig. 4. Unknown egg with oil-globule and yellowish pigment over yolk, 
and measuring '9906 mm., 22nd May 1891. x 25. 
Fig. 5. Larva of the foregoing 2*5 mm. long, viewed from the ventral 
surface, so as to show the oil-globule in the centre of the 
lower border of the yolk. The tail is somewhat folded. x 21. 
Fig. 6. Ovarian ovum of the large sand-eel {A. lanceolatus) somewhat 
compressed — and at the stage when the oil-globules are sepa- 
rate. Seen by transmitted light, 23rd May 1891. x 21. 
Fig. 7. Ovarian ovum of the same species at a more advanced stage, when 
the oil-globules have coalesced to form a single large one. The 
pale area is the nucleus seen by transmitted light. Similarly 
magnified. 
Fig. 8. Ovarian ovum of the lesser sand-eel {A. tohianus) as seen in an 
average form, 25th May 1891. x 40. 
Fig. 9. Abdomen of larval sand-eel obliquely seen from the dorsal surface, 
which is uppermost in the figure, the anterior being to the left 
and the posterior to the right. The large oil-globule lies in a 
pit of the yolk, 7th March 1891. Magnified. 
Fig. 14. Edge of egg-capsule of sand-eel {A. lanceolatus) compressed and 
folded — showing papillse. x 400. 
(For other figs, see Professor Princess paper, p. 351). 
