153 
a, SAO in an oblique line. AO 5—7 + 2—3. 
Second VO slightly dorsally displaced out- 
side the series. A 15—16, Last Pre near 
ventral profile... .,. Re ea emia tuicm ikea) Yoh 
. SAO in a blunt angle. AO 5—6 + 4—5. 
Second VO dorsally displaced outside the 
series, A, 17—I9. Last Pre in lateral line 
OVP (ORENGS 1aVSENE Thies Hk oho 6 ao Ob ie Ore 
2. Upper jaw extending far behind posterior margin 
of eye, its posterior end scarcely dilated. 1 Pol. 
Za SHOUL MLOMINEN vue o at eheplaeen nal init ticle 
6, Snout not prominent, 
a. Scales cycloid. 
aa. SAO in an oblique line. Eye 2!/3—3. 
a*, AO 7—9 + 7—II. 3 or 4 anterior 
1NOja) Blown welll Gio 6 oo oho) 6 
42, AO 7—10 + 3—6; all AOp behind 
ATI Mies, cers ketone serra at Sol |; s 
6. SAO in an nearly right angle. All 
AOp behind anal. Eye 33/,—4..... 
. Scales ctenoid. 
aa, SAO in an oblique line. P. 14. AO 
66. SAO in an blunt angle. P. 20. AO 
Ga te Reg aioe ca Ti ichvciouls site auc 
II. Luminous organs divided by a black septum. 
A. The first PO and the two PVO form a straight, 
ascending line to the base of the pectorals. The 
3 anterior VO forming a straight, obliquely ascen- 
ding line. No luminous patches. (Diaphus). 
I. 
Antorbital small, (and a small suborbital below 
anterior, Half.of eye, Gilbert) oi... 2 3.21% s, « 
. Antorbital large. 
a. A suborbital organ below posterior half of eye 
d. No suborbital organ. 
a. Pol, uppermost SAO and Prc below lateral 
. M. caeruleum p. 168. 
line. End of anal below adipose fin. . 
@. Pol, uppermost SAO touching lateral line. 
aa. Uppermost Pre touching lateral line; 
origin of dorsal above that of ventrals; 
end of anal below adipose fin. .... 
M. laternatum p. 156. 
M. plerotum 157. 
M. coccoi p. 158. 
M. punctatunm 160. 
M. affine p. 161. 
M. evermanni p. 162. 
M. spinosum p. 164. 
M. pristilepis p. 165. 
M. dumerili p. 166. 
M. suborbitale p. 167. 
M, splendidum 170. 
