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ENTOMOLOGY. 



Labrum almost perfectly quadrate. Promuscis as long 

 as the body. Ocelli disposed in a triangle. 



Sfi. 1. Dentata. 



Jinglossa dentata. Fabr. Latr. 



Sfi. 2. Dimidiata. 



Centris dimidiata. Fabr. 



Knglossa dimidiata. Latr. 



Genus DCLXXVII. Bombus. Latreillc, Fabricius, 

 Illiger, Panzer, Spinola, Klug. 



Apis. Linn. Kirby, (*» c. 2.) 



Bremus. Jurine. 



Labrum transverse. Promuscis shorter than the body. 

 Ocelli disposed in a transverse, straight line. 



The Bombi usually nidificate in cavities beneath the 

 groond, but many of the species, (especially those of a 

 iulvescent colour,) construct their nest of moss, on 

 the surface. The females appear early in the spring, 

 when the salices or willows are in bloom. The males 

 are most abundant in the autumn. 



Sfi. I. Terr es tris. 



Bombus terrestris. Fabr. Latr. 



Afiis Terrestris. Linn. 



Inhabits Europe. 



Sfi. 2. Muscorum. 



Bombus Muscorum. Fabr. 



Inhabits Europe. 



Subdivision 2. 



Hinder tibiae without spurs or heels. Superior wings 

 with two or three complete submarginal cells, the last 

 oblique or linear. 



Genus DCLXXVIII. Apis of authors. 



Hinder tarsi with their first joint long. Superior 

 wings with three submarginal cells complete, the last 

 oblique and linear. 



Sfi. 1. Melifica. (Hive bee.) 



Afiis melifica of authors. 



The interesting economy of the hive bee has engaged 

 the attention of Swammerdam, Reaumur, Huber, Wild- 

 man, Sec. to whose works we must refer the reader, as 

 the history of this curious animal would suffice to fill a 

 bulky volume. 



Genus DCLXXIX. Melipona. Illiger, Klugellan, 

 Latreille. 



Apis. Fabr. 



Tiugona. Jurine. 



Hinder tarsi with their first joint obtrigonate. Su- 

 perior wings with two complete subfnarginal cells. 

 Mandibles without any remarkable process. 



Sfi. 1. Favosa. 



Afiis favosa. Fabr. 



Melifiona favosa. Latr. 



Genus DCLXXX. Trigona. Jurine, Latreille. 



Melipona. Illiger, Klug. 



Apis. Fabricius. 



Centris. Fabr. 



Sfi. 1. Amallhea. 



Afiis amalthea. Fabr. 



Trigona amalthea. Latr. 



Sfi. 2. Sfiinifies. 



Centris sfiinifies. Fabr. . 



Trigona sfiinifies. Latr. 



Order DIPTERA. 



Order Diptera. Linn. Latr. &c. 

 Class Antuata. Fabr. 



The insects composing this order are distinguished 

 from all other insects by the following characters: 



Wings two, naked, unprotected. Haltares, (poiscrs 

 or balancers, placed behind, and generally beneath the 

 wings. • 



Besides these characters, may be noted some others 

 which are common to almost all dipterous insects. The 

 mouth is for the most part furnished with a rostrum 

 having no articulations. Thorax composed of but one 

 segment, always distinct from the abdomen. 



The Difitera are at this time undergoing investiga- 

 tion by some very eminent entomologists, and as the 

 Editor is desirous of rendering every part of this work 

 as complete as the nature of the publication will admit, 

 he has resolved to defer giving the arrangements of this 

 order, until the article Insect a goes to press, when the 

 most approved system of Difitera will be given ; in the 

 mean time, we shall merely give a tabular view of the 

 arrangement of Latreille, the terminations only being 

 altered, and the term tribe being used for family. 



Section I. Proboscid^a. 



Head distinct from the thorax by an evident interval. 

 Proboscis (rarely wanting) univalve. Tarsi with two 

 simple nails. 



Division I. 



Antennae with many joints. 



Tribe I. Tipularides. 



Division II. 

 Antennae with not more than three joints. 



Subdivision 1. 



Antennas with the last joint having at least four rings 

 or annulations. 



Tribe II. Stratiomydes. 

 Haustellum with two setae. 



Tribe III. Tabanides. 



Haustellum with many setae. 



Subdivision 2. 



Antennae with the last joint having not more than 

 three rings. 



A. Haustellum with four setae at least. 



a. Proboscis (when at rest) entirely or partially pro- 

 minent. 



* Proboscis terminated by two large lips. 



Tribe IV. Rhagionides. 



Palpi prominent, cylindric-conic. Wings divarica- 

 ting. Antennae generally moniliform. 



Tribe V, Dolychipodes. 



Palpi prominent, lamclliform. Wings incumbent. 

 Antennae patelliform. 



Tribe VI. Mydasides. 



Palpi not prominent, 



** Proboscis terminated by very small lips. 



