The larger species of this family are often mistaken for locusts and grasshoppers, in consequence of the loud chirping noise which they make, and which is sometimes so strong that Mr. Smeathman had no doubt that it might be heard a mile. They are occasionally, he continues, very numerous in the woods, where they make the hills and vallies ring, continuing their noise for hours together; at other times, when they are more scarce, bursting forth only at intervals. This chirp or whistle is in general harsh and dissonant, though sometimes, like Thomson's Stock Dove, their note, "Discordant heard alone, aids the full concert." Amongst the planters and English settlers of the West Indies they are however called the razor-grinders, their noise being by these persons likened to that made in grinding knives and razors. Kalm evidently alludes to these insects in his Tour of North America, where he says in some places they make so much noise, that unless two persons meeting together can speak louder than the insect can chirp, they cannot hear each other. {75}CICADA STRIDULA. Plate XXXVII. fig. 2. ORDER: Hemiptera. SUBORDER: Homoptera. FAMILY: Cicadidæ. GENUS. CICADA, _Linn._ CICADA STRIDULA. Villosa prasineo-fusca, nigro-maculata, abdomine nigro; elytris griseis, maculis ovatis ante marginem posticum 7, hyalinis; alis luteis versus apicem nigris, omnibus margine latiori hyalino. (Expans. Alar. fere 3 unc.) SYN. Cicada stridula, _Linn. Syst. Nat._ 1. 2. 706. 12. _Stoll. Cicada_, _fig._ 15. _Germ. in Thons. Arch._ II. 2. 12. 19. _Silb. Rev. Ent._ II. 76. 54. Cicada capensis, _Linn. Syst. N._ 1. 2. 706. 13. Cicada Catenata, _Drury_, _App. vol._ 2. HABITAT: Cape of Good Hope. Head short, thick, and of a yellowish brown, with a black stripe down the middle. Eyes round, and projecting. Ocelli distinct. Thorax yellow brown. Abdomen nearly black. Anterior wings yellow brown next the body, but darker in the middle; the external edges being transparent; above which is a row of transparent spots, placed between the tendons of the wings. Posterior wings yellowish, having a transparent border along the external edges, and a dark cloud placed at the upper corners. Legs yellow brown; rostrum extending between them, to the middle of the abdomen. APHANA LANATA. Plate XXXVII. fig. 3. ORDER: Hemiptera. SUBORDER: Homoptera. FAMILY: Fulgoridæ. GENUS. APHANA, _Burmeister_. Aphæna, _Guérin_. Cicada, _Drury_. APHANA LANATA. Fusca, capitis cornu tenui, ano farinoso, elytris nigris apice rubris undique albo irroratis, alis fuscis albo latè marginatis. (Expans. Alar. 1 unc. 3 lin.) SYN. Cicada lanata, _Drury_, _App. vol._ 2. (Exclus. Syn. _Linn._) HABITAT: Jamaica.