736 



ENTOMOLOGY. 



Tribe I. Formicarides.* 



Abdomen with a peduncle abruptly formed, with a 

 beale on two knots. Antennae thicker towards their ex- 

 tremities, the first joint very long, more so in the females 

 and neuters. Labrum large, perpendicular, corneous. 



Obs. These insects live in societies consisting of vast 

 numbers. The males and the females are furnished with 

 wings, the neuters being apterous. 



Genus DLXXI. Formica of authors. 



Lasius. Fabricius. 



Peduncle of the abdomen formed of one simple scale. 

 Sling not punctorious. Poisonous glands in the females 

 and neuters. Antenna; inserted in the front. 



Sft. 1. Hcrculanea. 



Formica /icrculanea. Latreillc. 



Inhabits the European woods, building a large nest 

 with bits of sticks. 



Genus DLXX1I. Polyergvs. Latreille, Spinoli. 



Formica. Jurinc. 



Peduncle of the abdomen formed of but one simple 

 scale. Sting not punctorious. Poisonous glands in the 

 females and neuters. Antennae inserted near the mouth. 



S/i. 1. Pu/'escens. 



Polyergus rufescens. Latreillc. 



Genus ULXXI1I. Poneka. Latreille, Illiger. 



Formica. Linn. Fabr. De Gecr, Olivier. 



Peduncle of the abdomen formed of one scale or knot. 

 Sting in females and the neuters. 



* Mandibles of the neuters narrow, elongate, cheliform. 

 Genus Odontomachus of Lalrcillc's old works. Myr- 



mecia, Fabricius. 



Sft. 1. C/ielifera. 



Ponera chelifera. Latreille. 

 ** Mandibles of the neuters broad and triangular. 



Genus Ponera of Latrcille's older works. 



Sft. 2. Crassinoda. 



Formica crassinoda. Fabricius. 



Ponera crassinoda. Latreille. 



Genus DLXXIV. Atta. Fabr. lllig. Jur. Latr. 



Formica. Linn. Fabricius, Villers. 



Peduncle of the abdomen formed of two knots. Sting 

 in the females and the neuters. Antennae entirely ex- 

 scried. Palpi very short; maxillary ones with six dis- 

 tinct joints. Head of the neuters very large. 



* Mandibles of the neuters very narrow, and much 

 elongated. 



Genus Eoiton of Latreille's older works; Myrme- 

 cia, Fabricius. 



Sft. 1. Hamala. 



JMyrmccia hamala. Fabricius. 



Acta hamata. Latreille. 



** Mandibles of the neuters clongate-trigonate, much 

 denticulated. 



Formica of Latrcille's older works; Atta, Fabr. 



Sft. 2. Ceft/ialolcx. 



Alia ccfihahlcs. Latreillc, Fabricius. 



*** Mandibles of the neuters short, trigonate, scarcely 

 denticulated. 



Genus Formica of Latrcille's older works, and of Fa- 

 bricius. 



Sft. 3. Caftilata. 



Atta caftilata. Latreillc. 



Genus DLXXV. Myrmica. Latr. Spinoli. 



Formica. Linn. Geoffroy, Panzer, Illiger. 



Manica. Jurine. 



Myrmecia. Fabricius. 



Peduncle of the abdomen formed of two knots. An- 

 tennx entirely exserted. Maxillary palpi long ; six-joint- 

 ed. Neuters and females armed with stings. 



* Mandibles very narrow, very long : Antennae fili- 

 form. 



Sft. 1. Forficata. 



Mijrmeciaforjicala. Fabr. 



Myrmica forficata. Latr. 



** Mandibles trigonate, but little elongate : Antennae 

 thicker towards their extremities. 



a. Superior wings with three submarginal cells ; the 

 first and second perfect. 



Sft. 2. Subtcrranea. 

 Mermicasubterranea. Latr. 



b. Superior wings with two submarginal cells; the 

 first perfect. 



Sft. 3. Fugax. 



Myrmica fugax . Latreille. 



Genus DLXXVI. Cryptocerus. Latr. Fabr. Illi- 

 ger. 



Formica. Linn. Olivier. 



Manica. Jurinc. 



Peduncle of the abdomen formed of two knots. An- 

 tennae with the first joint lodged in a lateral ridge of the 

 head. Neutrals and females armed with a sting. 



Sft. 1. Atratus. 



Cryfttocerus atratus. Latr. 



Tribe II. Mutillarides. 



Antennae filiform, vibratous, the first and third joints 

 elongate. 



The insects of this family are solitary. The males arc 

 winged, the females apterous, and there are no neuters. 



Family I. Dorylida. 



Antennae inserted at the mouth, the first joint very 

 long. Head small. Abdomen cylindric, having the first 

 joint nearly trigonate, with the superior sides more ele- 

 vated, or transverse ; rounded above, and separated from 

 the following joint by an incision. Tibiae slender, not 

 spinose. 



Genus DLXXVII. Labidus. Latreille, Jurine. 



Abdomen with the first segment nearly trigonate, with 

 the sides elevated like a horse's shoe. Superior wings 

 with three submarginal cells. 



Sft. 1. Latrcillii. 



Labidus Latreille. Jurine. 



Dorylus mediatus of Fabricius is probably to be re- 

 ferred to this genus. 



Genus DLXXVIII. DoRYLUs.f Fabricius, Jurine, 

 Illiger, Olivier, Latreille. 



Abdomen with the first segment transverse, rounded 

 above, and separated from the following joint by an inci- 

 sion, Superior wings with two submarginal cells. 



Sft. 1. Helvolus. 



Dorylus hetuolus. Fabricius, Latreille. 



Family II. Mutillida. 



Antennae inserted in the middle of the face. Head 

 large. Abdomen somewhat conic or ovoid. Tibiae spi- 



• Huber has written a work on the economy of these animals. 



f The males only of this and the preceding genus are known ; the females are supposed to be apterous and solitary. 



