No. 1. ] Fruit Trees. 67 



female scales have died off, and November or December 

 when the young female larvse are to be found upon 

 the old leaves of the tree ? Is the whole of this period 

 spent in the egg stage, or is there a second stage in the 

 life-history of the insect ? 

 {by Are the scales found upon the mango atShalimar, Bareilly^ 

 Dalsing Serai and Darbhanga identical ? 



2. Dinoderus distinctus Lesne. 



Order, Coleoptera. Family, Bostrichidce, 



(Plate IV, figs, i, ia. \b, ic.) 



A small brownish beetle about -|th inch in length ; the thorax and 

 elytra pitted and striated, Front part of thorax almost rasp-like. The 

 antenna has a thin lobed club at the end of it. The shank of ante- 

 rior leg is spined. Fig. 1 shows a dorsal view, \a s a side view, of 

 this insect enlarged ; \b the antenna and \c leg enlarged. A technical 

 description of this insect is given on p. 20. 



This beetle was found boring into dying terminal branches of 

 mango trees. Also in newly dead ones. The beetles were found in 

 pairs tunnelling in the branches on the 19th May 1902. The entrance 

 tunnel and a portion at least of the egg-gallery, which runs parallel 

 to the long- axis of the branch in the wood, are bored by the two 

 insects together. The gallery is probably finished by the female 

 and the eggs are then laid in it. The larvae feed in the wood. 

 Several different pairs of beetles were found in separate tunnels in 

 some of the twigs. They appear to invariably bore up the twig. 



This is the first report of this species from India. The beetle 

 was found by Mr. F. Swettenham and the writer on the Raynorpur 

 Grant in the Eastern Dun, United Provinces, at an elevation of about 

 2,000 feet. 



Remedy. — Keep the tree as free as possible from dead or 

 dying twigs. Such occur in considerable numbers as the result of 

 severe attacks of the monophlebus scale above described. They should 

 be pruned off the tree and all prunings carefully burnt. 



Points in the life-history requiring further observation, 



1. The number of generations of the insect in the year. 



2. Length of time spent in the grub stage. 



3. In which stage is the winter passed through ? 



F 2 



