1070 Marvels of the Universe 
member of the shark tribe which might almost be regarded as ugliness personified, and, on the other, 
for the use of the same name for certain fishes of tropical seas remarkable for the brilliancy of their 
coloration. These are members of a family sometimes called Butterfly-fishes ; while their scientific 
appellation Chetodontide has been bestowed in allusion to the peculiar form of the teeth, which 
are minute, closely set and extremely slender, suggesting rather bunches of bristles than teeth. 
But while, as we have remarked, several species of these ‘“‘ bristle-toothed ”’ fishes (Chzetodontide) 
are described indifferently as ‘‘ Angel-fish,”’ the name seems originally to have been bestowed on 
the species known as_ the 
Yellow Angel-fish, and to 
ichthyologists as Holacanthus 
ciliaris, which, however, in 
the matter of coloration is less 
striking than its near relation, 
the Japanese Paradise Fish 
(Holacanthus imperator). The 
black and yellow bands, which 
give these fish the appearance 
of wearing “ blazers”’ of an 
unusually striking pattern, as 
a matter of fact produce a 
quite opposite effect, causing 
the wearer to blend so com- 
pletely with its surroundings 
as to seem a part thereof, for 
they live in an environment 
where strange and _ striking 
contrasts of colour obtain on 
every hand. 
Near relations of the Angel- 
fish are found in American 
waters. And these, in their 
\ adult stages, afford a most 
\ interesting contrast in the 
matter of coloration, as may 
be seen in the case of the 
Black Angel-fish (Pomacanthus 
arcuatus) shown in the accom- 
Photo by] LE. J. Spitta, F.RM.S. panying photograph. But 
THE MIDGE. while the adults are invested 
In this greatly magnified portrait of the Midge, the lancets are seen hanging 
down from the head. These are the instruments with which it tortures its human in sombre shades of black 
victims. ; and brown, the young wear 
a livery in which broad bands of yellow play a conspicuous part, wherein they recall their adult 
relations of tropical seas. 
Welle, WIIDGIZ, ANID ITS CURIOUS Inve 
IG 135 fo GIANNA, Iolo WiS. 
OF all the abominations to be found in insect life that attack the human subject, one of the most 
trying is certainly the little Midge. For so small an insect, its bite seems peculiarly irritating, and 
