PLATE CXXII, 



v' Fig. 5. Elytrum dextrum aversa fascie vix auctum. 



Fig. 6. Elytrum sinistrum aversa fascii, 6 ossiculum serratum 

 rigidum quo sonus concitatur." * 



— " Dum mas sic feminam silentim ad nuptias vocat, hemely tri dextra 

 ora cornea, (fig. 4. a) sub interno margine serrato (fig. 6. b.) baseos 

 hemely tri sinistri colliditus : sonus que elytris (quod mirum) con- 

 cavis reverberatur augetur. Dum qui escit basis elytri sinistri 

 marginim baseos elytri dextri tegit.'* 



The emission of this sound is no doubt intended in the great 

 ordinance of nature to announce the presence of one sex to the other, 

 and which it appears can be heard and understood by its mate at a 

 considerable distance, and probably further off than any other 

 of the insect race with which we were before acquainted. We have 

 indeed in wandering through our European woods, distinguished 

 the shrill sounds of Gryllus viridissimus^ the Large Green Locust, at 

 a distance very remote, but not assuredly at more than one fourth 

 part of that at which the sounds of the Shock-shock of the West 

 Indies can be discriminated. 



The peculiarities of this species, Locusta Camellifolia, are very 

 remarkable, and the two sexes differ so materially that but for the 



* This incurvate bone having a serrated, or rather a crenate line down 

 its centre, and which it appears is so essential to be understood in order to 

 comprehend the true structure of this organ, and the means by which it pro- 

 duces sound, may be readily distinguished in our plate by referring from 

 the star along the dotted line, which points immediately to that remarkable 

 osseous process. 



