included this insect willi the Tenebriones, since its general 

 habit approaches that genus, and also the Scaritidse, with which 

 it agrees also in being carnivorous, and it is only by a minute 

 examination of the tarsi and tropin that we can obtain satis- 

 factory evidence of its real affinities; the absence of the inter- 

 nal notch in the mandibles I consider quite sufficient to remove 

 it from the Tenebriones, and I feel convinced that the tarsi are 

 all tetramerous, the fifth joint of Olivier being nothing more 

 than the incrassated base of the radical one. 



The Tinea granella^ Calandra gra7iaria, and Trogosita 

 MauritaJiica are all injurious to corn when housed; but this 

 last insect is particularly destructive, because it eats the out- 

 side of the grain, and consequently passes from one to another, 

 injuring as much or more than it consumes. Trogosita is an 

 inhabitant of many warm regions, and fortunately for us it 

 does not propagate readily in a northern climate : it is abun- 

 dant in the south of France, where it is called Cadelle. 



I believe nothing is known respecting the depositing of the 

 eggs; it is the larvae alone which feed on the corn, and they 

 do the greatest mischief at the end of winter, for they are then 

 full-grown and have attained the length of 8 lines: they enter 

 the earth or bury themselves in dust to become pupae. The 

 beetle is carnivorous, and makes some recompense for the 

 mischief it had done in its early days by destroying the Ti- 

 nea granella. 



In the Transactions of the Entomological Society for 1812, 

 is a letter from Mr. Kirkup, stating that a larva of l^enebrio 

 Maurita?iicus had been found in a Spanish almond, and that 

 it was 15 months before it became a beetle, after which it 

 iived 21 months, making a period of nearly 3 years, independ- 

 ent of the time it had lived previous to its being detected in 

 the almond. It is worthy of remark too, that the oeconomy of 

 this larva differed from those observed by M. Dorthes, because 

 they lived in the nut, and Mr. Kirkup believed that the beetle 

 afterwards fed upon the almond also. 



It is evident that this beetle has been introduced from the 

 shores of Africa, and is spreading itself in Europe; but as it is 

 not sujxposed to breed at large in Britain, the name is printed 

 in Italics in the Guide. From what has been already stated, it 

 is clear that the specimens discovered in this country have 

 been imported in fruits and grain ; the fact, however, of Mr. 

 Babington having found them in the rotten floor of a malt- 

 house at Cambridge, proves the mischief that may arise from 

 storing foreign corn, and the precautions that ought to be 

 taken in cleansing granaries from time to time by having the 

 walls and ceilings washed with lime, and the floors scrubbed 

 with hot water, l)y which means one of the most valuable arti- 

 cles of life would be secured from extensive injuries, which are 

 often eflected by the united agency of the above insects. 



Isatis tincloria, Wild Woad, was communicated by B. Ken- 

 Tie<]y, Esq., from a chalk-pit near Guildford. 



