ENTOMOLOGY. 



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Family I. Thrifisida. 



Tarsi with the last joint vesiculous. Antennae: eight- 

 jointed. Rostrum minute, horizontal, externally without 

 joints. Head elongate quadrate. 



Genus CCCCX. Thkips. Linn. GeofTroy, Latreille, 

 Lamarck, Olivier. 



Elytra and wings horizontal and linear. 



Sfi. I. Phijsa/ius. Black, hairy ; antennae, tibiae and 

 tarsi pale; middle of the tibiae pale brown ; elytra and 

 wings white. 



'J'hrifis fihysafius. Linn. Fabricius, Latreille. 



Family II. Jfihida. 



Tarsi with the last joint with two nails. Antennae six 

 or seven-jointed. Rostrum very distinct, nearly perpen- 

 dicular, with three distinct joints. Head transverse. 



Genus CCCCXI. Aphis. Linn. Fabr. Latr. Oliv. Lam. 



Antenna: setaceous or filiform, seven-jointed. Elytra 

 larger than the wings, elongate-triangulate. Abdomen 

 towards the apex generally tuberculated or horned. Eyes 

 entire. 



The animals of this genus are very numerous, and are 

 found on almost every plant. The French call them 

 Pucerons, the English Plain lice. The species require 

 examination. The females are generally apterous. 



Genus CCCCXII. Aleyrodes. Latr. Lamarck. 



TjXEA. Linnaeus. 



Phal^n t a. Geoff. 



Antenna: filiform, short, six-jointed. Elytra and wings 

 equal in size. Body mealy. Eyes two, each divided into 

 two. 



Sfi. 1. Chelidonii, Body yellowish, or rosy powdered 

 with. white ; eyes black ; each elytra with a puncture and 

 spot of black. 



Tiiibe VI. Aphides. 



Tarsi with one joint and one nail. Rostrum in the 

 female. Win s in the male, but no elytra. Female ap- 

 terous 



Genus CCCCXIII. Dorthesia. Bosc. Latr. 



Coccus. Dorthes, Fabr. Oliv. 



Antennae of the female eight-jointed. Abdomen of the 

 males very setose behind. 



Sfi. 1. Chararias. 



Coccus characias Dorthes, Fabr. 



Dorthesia characias Bosc. Latr 



Inhabits tin F.n/ihorbium chararias of southern France. 



Genus CCCCXIV. Coccus. Lin. Geoff. Fabr. Ohv. 

 Latr. Lam. 



Antennae of the female eleven jointed. Abdomen of 

 the males with two very long setae at the apex. 



Sfi. 1. Cacti. 



Coccus cacti. Linn. De Geer, Fabr. Latr. 



Inhabits fruit-trees. 



This genus requires a minute investigation, which 

 should be conducted by some one possessing a great 

 share of patience, and having a very competent know- 

 ledge of entomology. 



Order X. APTERA. 



Order Aptera. Linn. Delam. 

 Order Suctoria. Latr. 



Characters of the Order. 

 Body somewhat ovate, compressed, covered with a 



coriaceous skin, and composed of several segments. 

 Trunk short, consisting of three leg-bearing joints. 

 Head small, compressed, rounded above, and truncate 

 before. Eyes minute, orbicular, lateral. Antennae la- 

 meJlilorm, small, ciliated with spinules, one-jointed at 

 their base, inserted in two excavations behind the eyes. 

 Palpi filiform (composed of four rounded joints), scarcely 

 longer than the head, porrect, generally resting on the 

 rostrum. Legs strong, and formed for jumping, especial- 

 ly the hinder ones. Coxae and thighs large, compressed. 

 Tarsi elongate, cylindric, composed of five simple joints, 

 the last articulation furnished with two long, acute, slen- 

 der nails. 



Larva without feet. 



Pupa foiiculate. 



Genus CCCCXV. Pulex, of authors. 



Sfi. I. Irritans. Body brunneous, sometimes inclin- 

 ing to rust-colour. 



The common bed-flea. Is found throughout Europe. 



Notwithstanding the inconveniences attending this little 

 insect, there is something pleasing in the appearance of 

 the flea. Its motions are elegant, and all its postures in- 

 dicate agility. The shell with which it is enveloped is 

 in a state of perpetual cleanliness, while the muscular 

 power which it is capable of exerting is so extraordinary, 

 as to excite our wonder, at so much strength confined 

 and concentrated within so small a space ; this species 

 being able to spring, on the most moderate computation, 

 to the distance of at least 200 times its own length. It is 

 remarkable, that Socrates was ridiculed for his pretend- 

 ed experiments on this subject, by Aristophanes. Arist. 

 Clouds, acti. scene. 2. This circumstance is alluded to in 

 Butler's Hudibras. 



S/i. 2. Penetrans. The chigger. 



Inhabits the West Indies, penetrating the human skin, 

 and depositing, a parcel of eggs within a sac. 



The pulices of birds and of mammalia ought to be most 

 carefully examined. There are a vast number of species 

 which have been confounded with P. irritans. 



Order XI. LEPIDOPTERA. 



Order Lepidoptera. Linn. Cuv. Lam. Latr. 

 Class Glossata. Fabr. 



Characters of the Order. 



Wings four, covered with scales. Tongue spiral, fili- 

 form. 



Linne divided this order into three genera, viz. Pafiilio 

 (butterfly), Sfihinx (hawk-moth), and Phalana (moth), 

 which were characterized by the form of their antenna: ; 

 and these divisions form the three great sections of La- 

 treille, as follow. 



Section I. Diurna. 



Wings four ; all, or at least the superior ones, erect, 

 when the insect is at rest. Antennae with their points 

 thicker or capitate ; in a very few somewhat setaceous, 

 with the extreme apex hooked. 



The insects of this section, which constituted the Lin- 

 nean genus Pafiilio, all fly by day. Caterpillars with six- 

 teen feet. Chrysalis naked, and generally angulated. 



Tribe I. Papilionides.* 



Hinder tibiae with heels only at their extremities. 

 Antennae not ungulated or hooked at their extremities. 

 Wings all elevated when at rest. 



* We stall for the most part only introduce the indigenous genera, with a complete enumeration of the British species. 



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