INSECTA. 
]G1 
nected, in reality, with our present fauna than it is with that of any 
other country where it has in like manner been introduced through 
the medium of commerce,” It is a shiny black Beetle, about one- 
third of an inch in length, and nearly half as broad as it is long ; 
common about Jamestown and that locality. 
A. piceus, Oliv. — A species very like the last, but only about half 
the size; found in similar localities. Mr. Wollaston says, as at 
St. Helena, so it has been naturalized, through the medium of com- 
merce, “in the Azores, Madeiras, Canaries, Cape Verdes and at 
Ascension, in which last-mentioned island it was found, in company 
with the A. diaperinus , by the late Mr. Bewicke, not in houses and 
amongst farinaceous substances, as we should have expected, but 
‘in the dung of sea-birds, miles from habitable parts' which is 
undoubtedly a singular habit for these common and almost cosmo- 
politan insects to have acquired.” 
Gnathocerus, Thunb. 
G. cornutus, Fab. ibis reddish-brown Insect has been intro- 
duced through the medium of commerce, in like manner as it has 
been at Madeiras, Canaries, Cape Verdes, and Ascension. It is 
common about houses and store-rooms, both in town and country, 
in fact wherever flour, biscuit, and other farinaceous substances are 
stored. 
Tribolium, MacLeay. 
T. ferrugineum, Fab. — A somewhat smaller Insect, of a 
reddish-brown colour, introduced through the medium of com- 
merce, as it has also been in the Azorean, Madeiran, Canarian, and 
Cape Verde archipelagos. It is very common at St. Helena in 
similar localities as the last species. 
Fam. Tcnebrionida. 
Tenebrio, Linn. 
T. obscurus, Fab.— A rather large, long, thin, black Beetle, 
about an inch in length, which has become naturalized in the Island, 
as it has “ almost universally throughout the Azorean, Madeiran, 
and Canarian archipelagos.” It is somewhat rare at St. Helena, 
but is found on both high and low land, generally in straw, about 
M 
