Cuap. VI. MUSICAL CRICKET. 129 
syllables ta-na-na, ta-na-nd, succeeding each other with little inter- 
mission, It seems to be rare in theneighbourhood. When the natives 
capture one, they keep it in a wicker-work cage for the sake of hearing 
it sing. A friend of mine kept one six days. It was lively only for 
two or three, and then its loud note could be heard from one end of 
the village to the other. When it died, he gave me the specimen, the 
only one I was able to procure. It is a member of the family Locus- 
tide, a group intermediate between the Crickets (Achetidze) and the 
Grasshoppers (Acridiidz).. The total length of the body is two inches 
and a quarter; when the wings are closed, the insect has an inflated 
vesicular or bladder-like shape, owing to the great convexity of the thin, 
(Ger 
Lf 





















Musical Cricket (Chloroccelus Tanana). 
a, b, Lobes of wing-cases transformed into a musical instrument. 
but firm, parchmenty wing-cases, and the colour is wholly pale-green. 
The instrument by which the Tanana produces its music is curiously 
contrived out of the ordinary nervures of the wing-cases. In each 
wing-case the inner edge, near its origin, has a horny expansion or 
lobe ; on one wing (4) this lobe has sharp raised margins; on the 
other (a) the strong nervure which traverses the lobe on the other side 
is crossed by a number of fine sharp furrows like those ofa file. When 
the insect rapidly moves its wings, the file of the one lobe is scraped 
sharply across the horny margin of the other, thus producing the 
sounds ; the parchmenty wing-cases and the hollow drum-like space 
9 
