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ee down with frai getting yellow from the pioet of the grub; 
are dying, some dead, all due to the boring grub. The natives 
ste or will soon see it, id will abstain from planting co ote. Considering 
H this is an agricultural country, and that soil and climate appear to. 
t the Liberian coffee to perfection, Mi AT should be done to a 
et defeat the grub. 
Report by Dr. EAsuoN on some of the Borers affecting some of the 
Economie Plants in the Government Botanic Station : at Aburi. 
1. Borer affecting the Arabian. Coffee, 
Specimens preserved :— 
(a.) Portion of cocoon Vd its tough and fibrous nature ; 
(b.) A full-sized grub or larv 
(c.) A DID pa; 
(d.) A mature insect. 
larva is two inches long, greenish white in appearance with a 
darker grey streak along the sides ; the head is large and provided with 
two strong brown nippers; the body consists of 11 segments, the two 
nearest the head being only slightly distinguishable. 
Only a portion of the pupa is given ; it calls for no special remark. 
The developed insect is one inch in length ; narrow body of a 
Tight brown colour; the head is black, on the centre of the back is a 
black triangular mark with the apex pointing backwards and on each 
side, about a quarter of an inch from the posterior extremity, are two 
smaller black marks. The antenns are retracted over the back, 
insect is very active in its habits 
2. Borer affecting the Liberiith Coffee. 
This is waka practically the same insect as that affecting 
the Arabian coffee; the matured insect seemed a trifle larger than the 
others and pabi darker in colour, but I think this is simply a question 
of age or possibly of sex, 
3. The Castilloa elastica Borer, 
Specimens of this insect in various stages are supplied in two tubes. 
The grub is much larger than in the preceding cases, and the matured 
insect is also oc measuring 11 inches in length and much broader 
than the coffee borer _ antennæ are an e and a half long and 
arke: 
tint, t, with two small black points on either side of the middle line in the 
centre of the back, and black spots on the outer side of the body, as 
in the list described.. This insect is most active in its operations, 
4. Orange and Lemon Trees. 
Two classes of borers affect these plants, one attacking them at the 
roots, the other at the branches. It would appear that the operations 
of the latter are — upon those of the former, and that asoa 
matter of fact they are ael until a certain degree of diminished 
venie of the wood is reached. 
oot borers are paccaliely active, and the larva has specia al 
enashielitgidnh arrangements for facilitating its o 2 ons. Specimens 
of all the insects I found on these trees are subm 
(Signed) 3 ^ "Yu EASMON. 
A2 
