Teens TEI 
Order MALACOPTERYGII Cuvier. 
' (Lsospondyli Cope, Clupeiformes Goodrich) 
Physostome. Generally scaly; lateral line present or absent. 
Skull with a supraoccipital, separated from the frontals by the 
parietals. Maxillary entering the gape to a greater or less 
extent. Opercle well developed, its bones complete. Anterior 
vertebrae not co-ossified, forming no Weberian ossicles. Pectoral 
arch suspended from the skull, mesocoracoid present. Fins 
without true spines; ventrals, if present, abdominal. 
Aetivtieial key to the families: 
I. Lateral line present. 
A. Gular plate (Fig. 1) between branches of lower jaw Z/opsidae p. 2. 
’ B. No gular plate. 
z. Head scaled. Belly with double serrature. . .. Motopteridae p. 8. 
2. Head naked. No abdominal serrature. 
a. Teeth present. 
aa. Anal far behind dorsal. Scales small... Albulidae p. 6. 
46. Anal opposite to dorsal. 
a. Scales large; lower jaw with a pair of 
bashelss freshwater 2. -'... m.js «sie Osteoglossidae p. 12. 
@. Scales moderate or wanting; no barbels; 
CEP SER rea whol totals) a) i. oI Alepocephalidae p- 98. 
4. No teeth. 
Analetarebelind dorsal: 5). ss 2. Chanidae p. 14. 
IT, No lateral line. 
A. No adipose fin. No photophores. Parietals pre- 
sent. Pectorals always developed, ventrals sometimes 
rudimentary or wanting. Airbladder contiguous with 
SLUICE GY OL OAM oy rok ‘elif sie vi fe)s vines siratvd (ei 0!) os)! «) oi ess Clupeitdae p. 16. 
B. Adipose fin present or absent. Photophores present. 
Parietals absent. Pectorals sometimes rudimentary 
or wanting; even in last case ventrals may be well 
developed while otherwise they may be absent. . Sfomiatidae p. 105. 
INDO-AUSTRALIAN FISHES II. I 
