“Scotia” Collection of Fishes from St Helena. 51 
The following are a few of the measurements of the specimens in milli- 
metres, to show individual variations :— 
a b ( d é f 
Length to base of Caudal . . | 254 | 253 | 250 | 250 | 245 | 226 
Length of Head : j sz | 64 70 69 67 59 
Length of Snout : 5 | Le 18 18 17 16 15 
Length of Eye . : : by) lil 11 12 11 10 10 
Interorbital width . 3 : 8 9 8 7 7 7 
Tip of Snout to origin of Dorsal) 101 | 103 | 105 | 100 | 100 89 
Length of Pectoral . : 5 | 23 29 28 26 25 24 
Length of Pelvic. : o || BB.) Se 55 53 46 45 
Length of Premaxillary . aif RS = 4i83 47 46 43 38 
Aulostoma coloratum Mill. & Trosch. 
2 specimens, young and adult, taken off St Helena, 171 mm. and 
566 mm. in total length. 
Exocetus obtusirostris Gunther. 
Dorsal 13; anal 13. Depth of head equal to distance from extremity 
of snout to hind margin of preoperculum. Snout 2 diameter of eye, which 
is 34 in length of head. Origin of dorsal opposite origin of anal. 
1 specimen, total length 137 mm. 
Exocetus speculiger Cuv. & Val. 
Depth of body 6 in the length; length of head 42. Snout equal to 
diameter of eye, which is 34.in length of head; interorbital width slightly 
more than diameter of eye. 
Dorsal 10; first pectoral ray over half the total length of the pectoral fin, 
which reaches just beyond the extremity of the dorsal. Anal 11. Origin of 
anal slightly in advance of the dorsal. Pectoral on upper side blackish, with 
an oblique white band and white margin. 1 specimen, total length 
240 mm. 
Holocentrum longipinne Bl. Schn. 
Several specimens averaging 230 mm, 
