8656 



Insects. 



yellow colour. The tibiae and tarsi are ferruginous, like the antennae ; 

 the claws, which are sharply bi dentate, are more of a brown tint ; in 

 the interspace is a blackish pulvulus. 



The posterior legs in the male are much broader and of stouter 

 build, as shown in figures 8 and 9, in which the first represents the 

 leg of the male, and the second that of the female. The wings are 

 ferruginous or golden, the nervures being red in the basal half and 

 dark brown at the apex ; the stigma is brownish red ; a blackish stain 

 extends from the stigma across the inferior portion of the two mar- 

 ginal cells. 



The abdomen has a yellow band on the first segment, divided by a 

 line in the middle ; the third segment has a yellow streak on either 

 side, — in some female examples these are found on the second also ; 

 the fourth and ninth segments have yellow bands, which are much 

 broader in the female than in the male, as shown in our figures 

 6 and 7, the latter representing the abdomen of the male. The male 

 has only eight segments, and at the apex the organs of generation may 

 be seen protruding between two cup-shaped valves. The ovipositor 

 of the female is black. 



M. De Roo writes me that he thinks there are two broods ; how- 

 ever, considering the slow rate of growth of the larva, I cannot share 

 his opinion. He grounds his supposition principally upon the fact 

 that he observed imagos between the 11th and 14th of July, whilst 

 young larvae were in existence which moulted on the 17th. We must 

 await the result of further observation to ascertain the fact on this point. 



We have not reared any parasites from this sawfly. 



The Lanthorn of Fulgora Lalernaria. — Extract from a letter dated June 26, 1862, 

 from Mr. R. J. Treffry, Honda, New Granada, to Mr. George Treffry, Exeter: — 

 " I have sent to you by this packet, or it is sent to Carthagena to go by.it, a small 

 parcel containing several specimens of the great lanthorn-fly : these have been col- 

 lected by a man who has taken refuge in the forests of the High Central Andes, near 

 Mariquita, in New Granada, to avoid soldiering in these revolutionary times ; and 

 because I send so many you must not think them abundant. The so-called lanthorn 

 appears to answer as a drum to reverberate its hum and as a 'buffer' to protect it, 

 when, in its rapid flight, it strikes against an obstacle, as it is elastic and horny, and 

 I have taken the live insect by the shoulders and pressed the end of the lanthorn until 

 its end was reflected back against the hump behind, without any inconvenience to the 

 insect. I think its use is what I have stated,— an instrument of sound and a 

 'buffer.' I cannot tell why it is called the 'lanthorn fly,' for it gives no light. 

 I speak from my own experience, during a residence of more than thirty years in New 

 Granada, and from the information of the men who catch them." — Robert John 

 Treffry; Honda, New Granada. 



