INSECTA. 463 



which BURMEISTER changed into Dematoptera, had been previously 

 (see above, p. 449) given by DE GEER to the order of the Orthoptera. 

 LEON DUFOUR, who subsequently proposed the same separation, 

 named these insects, in imitation of DUMERIL, Labidura; WEST- 

 WOOD Eupleocoptera (Zool. Journal, 1831, Modern Classification, I. 

 1839, p. 308). At all events these insects have greater agreement 

 with the Orthoptera than with the Coleoptera ; they differ from the 

 last by their incomplete metamorphosis and by many particularities 

 of internal structure. The great size of the under-wings in com- 

 parison with the elytra is very common in the Orthoptera (to refer 

 to Phasma alone), and the reflexion of the point of the wing also is 

 not wanting in some other Orthoptera, as, ex. gr. Anaplecta, the last 

 of the sub-genera of Blatta recorded above. 



Forficula L. Body depressed, narrow, elongate, with prothorax 

 quadrate. Antennse filiform, a little longer than half the body, with 

 joints very distinct, mostly more than twelve (ten to forty). Ocelli 

 |none. Labrum entire, orbicular ; mandibles denticulate ; labium 

 >ifid, with palps short. Abdomen with last segment forcipate, with 

 forceps horny, moveable, in males arcuate, or more open. 



Comp. on the anatomy, POSSELT, Dissert, inaug. sistens tentamina circa 

 Anatomiam Forficulce auricularice L. iconib. illustr. Jenae, 1800. An 

 extract from it may be found in WIEDEMANN, Arckivf. Zool. u. Zoot. 1801, 

 I. i, s. 230 234, with the corresponding figures, also n. i. PI. in. with 

 the explanation by the author himself, s. 230 235. 



LEON DUFOUR, Reclierches Anat. sur les Labidoures, Ann. des Sc. not. 

 xm. 1828. pp. 337366. 



Sp. Forficula auricularia L., PANZER, Deutschl. Ins. Heft 87, Tab. 8, male; 

 Cuv. R. Ani. ed. ill., Ins. PL 77, fig. i ; Forficula minor L. ; PANZER, 

 1. 1. Tab. 9, &c. 



Earwigs, perce-oreilles, Ohr-ivurmer. It is said that they creep into the 

 ears, and hence this name; this they do not more than other insects, which 

 by chance may get into the ears of persons asleep. They live in moist 

 places, and eat almost everything ; they are especially fond of fruits and 

 honey. The females sit on their eggs, and guard them; the young also 

 creep under their mother, like chickens under the hen, and she often sits 

 quietly for hours together over them. DE GEER, Mem. s. I. Ins. III. 

 p. 548. 



Note. Some are. without hind- wings but provided with elytra, or are 

 entirely apterous. According to difference of form and number of joints 

 in antennae, LEACH, LATREILLE, and especially SERVILLE, have formed 

 several sub-genera, of which it may here suffice to cite the names ; Apachya, 

 Mecomera, Sparatta, Diplatys, Forficula, Echinosoma, Lobophora, Pyragra, 



