affecting the Corn-Crops- 
105 
rather small, intermediate pair a little the shortest ; thighs stout ; 
shanks slender and simple, with a spine at the apex ; tarsi very 
slender, 5 -jointed, first 4 joints very small, 5th long, clavate ; the 
hinder pair is only 4-jointed in the males ; claws 2.* 
With them I had also the good fortune to find the larva (fig. /) : 
it is a little longer than the beetle, narrow, very much depressed, 
of an ochreous colour, sparingly hairy and formed of 13 seg- 
ments, including the head, which is somewhat orbicular, with 
2 minute antennae and 2 palpi ; it has 6 pectoral, short, articulated 
legs, the segment at the tail is the longest, semi-ovate, recurved, 
and terminated by 2 little spines forming a fork : fig. 25, greatly 
magnified. I have never seen the pupa. Another species of 
Cucujus, apparently the minutus of Olivier, infests the maize. 
Ptinus crenatus — The oval Ptinus. 
Another small beetle is often associated with these insects in 
old granaries, and by eating into the floors and rafters in which 
they breed, not only reduces the woodwork to powder, but pre- 
pares commodious retreats for the larvze of the corn-moths and 
the grain-weevils. The mischief might be prevented, I expect, 
by Kyanizing the timber employed in such buildings. This 
Coleopterous insect belongs to the Family Ptinid^ and the 
Genus PriNUS. From the difference of form in the sexes, the 
male was described as the P. ovatus, and the female as P. Cere- 
visice by our countryman Marsham, bat it had previously been 
named by Fabricius 
11. P. crenatus. It is of a rusty-brown colour; the male is 
scarcely 1 line long and ~ broad ; the female is sometimes 1 ^ line 
long and ^ broad ; the head droops and is densely clothed with 
yellow hairs; the eyes are small, black, prominent, and lateral : 
antennae long in the male, filiform, pubescent, and 11 -jointed, 
basal joint stout ; the following elongated, terminal one conical ; 
shorter in the female, the joints more ovate-truncate : the thorax 
is somewhat orbicular, narrowed at the base, very convex, with a 
central ridge and 2 lateral tubercles, the spaces between them 
clothed with long yellowish hairs ; scutellum very minute; elytra 
oval, more globose in the female, with lines of punctures and 
series of yellowish hairs ; the legs are of moderate size and 
pubescent ; the thighs clavate ; shanks rather long and slender ; 
feet longisb, 5-jointed, basal joint the longest, 4th the smallest; 
claws small. 
Uloma cornuta — The horned Maize-beetle. 
I ought not to omit mentioning a beetle which not only in- 
* Dissections of the mouth, and more ample characters, will be found in 
Curtis s Brit. Ent., fol. and pi. 5lO. 
