affectinjg the Corn- Crops. 
103 
of keeping storehouses clean and aired, and I have the authority 
of gentlemen of great experience in London to state, that by 
stirring or turning over the malt frequently, and taking every 
opportunity of whitewashing the walls, whenever the granaries 
are at all empty, they experience no loss from the insects I have 
just recorded. 
The corn-weevils are frequently accompanied by several 
species of small beetles, which assist in reducing the quantity and 
depreciating the quality of the corn in our granaries. Of course 
they all belong to the Order Coleoptera, and the first is in- 
cluded in the Family Cortic.vrid.c and the Genus Silvanus. 
It is named 
Silvanus Surinamensis — The Corn Silvanus. 
From the specific name it may be inferred that this little beetle 
has been imported originallv from Surinam. It is now a constant 
inhabitant of our stores and warehouses, and from its infesting 
corn, it was described by Fabricius as Anobium friimentarium ; 
and subsequently as Dermestes sex-dentatum, Irom the spines on 
the sides of the thorax. Linnaeus's name having the right of 
priority, I shall retain it. 
9. S. Surinamensis (fig. 24) is only 1 line and a quarter 
long (k), and very narrow : it is flat, of a rusty brown colour, 
thickly and coarsely punctured, and sparingly clothed with short 
yellow depressed hairs : the head is Irrge and subtrigonate, the 
nose appears truncated, but it is semicircular in front, and con- 
ceals the mouth, which is composed of an upper and under lip, 
2 little horny jaws, maxillae and palpi : the antennae are inserted 
under the reflexed sides of the head, stout, straight, pubescent, 
nearly as long as the head and thorax, and 11 -jointed, basal joint 
stoutish, 2nd and 3rd obovate, 5 following globose or cup-shaped, 
the remainder forming an elongated club, the basal and 2nd joints 
being cup-shaped, the apical one more orbicular : the eyes are 
black, small, hemispherical, and coarsely granulated : the thorax 
is perfectly oval and a little broader than the head at the middle ; 
there are 3 ridges down the back forming 2 broad channels, and 
on each margin are 6 teeth ; scutellum minute : the elytra are 
long, elliptical, and broader than the thorax, with 4 slightly 
elevated lines down each, between them are double rows of punc- 
tures, and series of little shining yellow bristles: beneath them 
are two ample wings : legs six and short ; thighs stout ; shanks 
clavate ; feet 5- jointed, 3 first joints short, 4lh exceedingly minute, 
•5th clavate, terminated by 2 claws. 
The larva is a little depressed, yellowish-white worm (fig. 22, 
magnified, i being the natural length) ; it is composed of a 
tolerably large head with 2 pointed jaws, and 2 little horns, and 
