ORTttOPTERA. 153 



from two to four hundred eggs ; this nest, with the gallery that 

 leads to it, resembles a bottle with a curved neck. The young 

 remain together for some time. For other details, see the ob- 

 servations of M. L2 Feburier, Nouv. Cours d'Agriculture *. 



TRiDACTi'i-us, Oliv. — Xya, I/lig, 



These Insects also excavate the earth, but with the anterior legs 

 only; in lieu of posterior tarsi, they are furnished with moveable, 

 narrow, hooked appendages, resembling fingers. Tiie antennae are of 

 equal thickness, very short, and consist of ten rounded joints. 



T. variegalus; Xi/a variegata,ll\}g.; Chapent., Hor. Entom., 

 II, p. 84, f. 2, 5. Very small; black, Avith numerous spots or 

 dots of a yellowish-wliite ; a great jumper. South of France, 

 on the shores of rivers f- 



Gryllus proper, 



Where none of the legs are adapted for digging, and where the pos- 

 terior extremity of the female abdomen is provided with a salient 

 ovipositor. 



'I'heir antennde are always elongated, smaller near the extremity, 

 and terminate in a' point. The simple eyes are less distinct than in 

 the Trid.ictyli and Gryllo-talpae. 



G. campesiris, L. ; Roes., Insect., II, Gryll., xiii. Black; base 

 of the elytra yellowish; head large; posterior thighs red be- 

 neath. It excavates deep holes by the roadside, in dry soils, and 

 in situations exposed to the sun, Avhere it remains in ambush, 

 Avatching for the insects on which it preys. There also the 

 female lays her e^gs, which amount to three hundred. This spe- 

 cies hunts the following one. 



G. domesUcus, L. ; Roes.. Insect., II, Gryll., xii. Pale-yel- 

 lowish mixed with brown. It frequents those parts of houses in 

 which fire* are generally kept, and which furnish it with both 

 shelter and food, as behind chimnies, ovens, &c. Such are also 

 its breeding places. The male produces a shrill and disagree- 

 able noise. 



Spain and Barbary produce a very singular Gryllus, the G. 

 umbraculatus, L. The forehead of the male is furnished with 

 a membr.inous prolongation, which falls like a veil. 



MM. Lefevre and Bibron have brought from Sicily a new 

 and large species, described by the former under the name of 

 megacephalus ; its stridulous noise is prolonged for half a mi- 

 nute, and may be heard at the distance of a mile. 



The wings of the G. monslrosus form several spiral convolu- 

 tions at the extremity %. 



* Lat., Gener. Crust, et lasect., Ill, p. 95. 



t Lat., lb., p. 96, T. paradoxus, Coqueb., Illust. Icon. Insect., Ill, xxi, 3. 



X Add Gri/lliis pcllucens, Panz., Faun. Insect. Germ., XXII, 17, male of the 

 Acheta italica, Fab. It Uvps on flowers ; — Achela stjhestris, Fab. ; Coqaeb., IlUut. 



Icon., I, i, 2; — -I. umbmculala, Fab. ; Coqueb., lb.. Ill, x\i, 2, and other species 

 figured by De Geor, Drury, Herbst., &c. See Fabricius. 



VOL. IV. M 



