228 hag. ALLEN: 
as being due to the offspring of a second shoal of spawning fish appearing ~ 
some three weeks later than the one whose offspring are represented in 
Fig. 2. A more detailed analysis of the figures by taking five groups of 
hauls instead of two, namely, (1) XIV., XV., XVI., (2) XVII., XVIIL., 
XIX., (3) XX., XXI., XXIT., XXITT., (4) XXIV. —-XXXVIITL., (5) XLITE., 
XLIV., XLV., and noting that the fifth group comprises hauls taken 
more to the eastward, that is in the direction of the general Channel 
drift, than the hauls of groups (1) and (2) confirms the view just 
expressed, though I have not thought it necessary to reproduce the five 
curves here, the numbers of fish in each group being rather small. 
In Figs. 4-7 are given four drawings made by Mr. E. Ford, representing 
four different stages in the growth of these young mackerel. In these 
drawings the characteristic distribution of the black pigment, the larval 
teeth, and the other characters by means of which the species can be 
distinguished are well shown. 
TABLE XX. 
RECORD OF SCOMBER SCOMBER.* 
No. of haul, Date. Depth. No. Sizes in mm. 
XIV. 25.v.14 M. 22 2 at 5, 1 at 5-5, 7 at 6, 6 at 6-5, 
3 at 7, 1 at 7-5, 1 at 8, 1 at 8-5. 
CV: 25.v.14 S. 29 1 at 5-5, 2 at ‘ 8 at oa 5 at 7, 
4 at 7-5, 2 at 8, 4 at 8-5, 2 at 9, 
l at 10 
XVI. 25.v.14 S 32 1 at 5, 7 at 6, 8 at 6-5, 5 at 7, 
3 at 7-5, 1 at-8, 4 at 6-5, Tato 
1 at 10, 1 at 11-5 
XVII. 3.v1.14 18%, 21 1 at 5-5, 1 at 6, 8 at 6-5, 6 at 7, 
XVIII. 3.v1.14 B: 10 1 at 
XIX. 3.v1.14 M. 3 eater, i ab 1-5 leat S-D 
KX, 10.v1.14 °-S:—M. 3 lat 7, I at 3; Wat 12-5 
XXI. 11.vi.14 M. 3 leat me 1 at 9, 1 at 10-5 
XXIT. 11.vi.14 M—B. 4 Tat 7-5, 2-at 1, lato: 
Ds. Ml aes bt le a B 4 1 at a J2at 10: lcat lle 
MXTV. (Lo.val4 IBY I 1 at 6:5. 
DeXV EE ~ T6lvirel4 B. 2 1 at 8-5, I at 9:5 
XXVIII. 16.vi.14 M 7 lat 5,91 at 6, 2°at°9> 2 atedoy 
1a: 
NXT. | RFvi.14 M. 2 leat by Mat: 8°55: 
SOX ev S. 2 L at:8, Tat 9% 
* Measurements to the nearest °5 mm. 
