the Genus Lichia of Cuvier. 349 
argenteus. Guichenot subsequently described a fifth species 
as belonging to the genus Lichia, naming it L. albacora. 
The relations of this last species are not very evident, but 
L. calcar, Bl., is, without much doubt, based on a young 
example of Scombroides saliens, Bl. 
Liitken, recognizing that L. glauca should be regarded as 
generically distinct from LZ. amia and L. vadigo, on account 
of the smaller mouth and the absence of pseudobranchie, 
proposed to retain the name Lichza for the former species 
and to designate the two latter by the generic name Porthmeus. 
This is obviously inadmissible; the name Lichia must be 
given to L. amia, whilst Porthmeus is a synonym of it. 
After examining examples of the three species in the British 
Museum Collection I have arrived at the conclusion that 
L. glauca must be included in the genus Trachynotus, Lacep., 
and that the other species are certainly not congeneric, so 
that I propose to distinguish LZ. vadiyo by the new generic 
name Campogramma. 
It has been stated that LZ. glauca may be distinguished 
from Trachynotus by the stronger dentition, more pointed 
snout, and less produced dorsal and anal fins. ‘The first 
supposed difference is, so far as I can see, non-existent ; 
as regards the second and third, which are in any case not 
of generic importance, the form of the snout is exactly the 
same in LZ. glauca as in Trachynotus Baillonii, Lacep., whilst 
the extent to which the dorsal and anal rays are produced is 
subject to great variation in the different species, and in 
T. Baillonii, which is in most respects nearest L. glauca, 
they are more produced than in any other. 
L. glauca should therefore be named Trachynotus glaucus, 
Linn., whilst for Zrachynotus glaucus, Bl., I propose the 
name 1’. palometa. 
The differences between the genera Lichia and Campo- 
gramma can be seen in the following diagnoses :— 
Licuia, Cuv. 
Body oblong, compressed, covered with small pointed 
scales. Mouth wide; premaxillaries protractile ; maxillary 
exposed distally, with supplemental bone ; jaws with rather 
broad bands of numerous small pointed teeth ; vomerine and 
palatine teeth present. Pseudobranchie present. Dorsal 
with an anterior portion composed of a few spines which are 
free in the adult, and a long posterior soft-rayed portion. 
Anal preceded by two free spines, equal in length to the 
soft dorsal. Pectorals rather short, not faleate. Caudal 
’ 
