Ii. 
ILLUSTRATIONS. 
PLATE I. 
1. Adults of R. ferrugineus Fabr. (About natural size.) 
2. Head of larva. (X 5.) 
3. Antenna. (X 12.) 
4. Left mandible of female: 
(a) Profile and inner surface, showing condyle. (X 7.) 
(b) Interior view. (X 7.) 
5. Profile of head and thorax of female. (X 14.) 
6. Profile of head and thorax of male. (X 14.) 
Piate II. 
Coconut showing results of attacks of Oryctes rhinoceros L, and Rhynchophorus 
ferrugineus Fabr. 
Kia. 
Fig. 
F1as. 1- 
F ia. 
Vie. 
Fie. 
PLATE ITI. 
1. Crown of coconut, showing inverted cone, in longitudinal section, eaten 
out by larve of O. rhinoceros and R. ferrugineus Fabr. (About one- 
seventh natural size.) 
2, Adult of O. rhinoceros 1. boring into petiole of coconut leaf. (One- 
half natural size. ) 
PLATE IV. 
1. Larva of Oryctes rhinoceros L. 
2. Pupa of Oryctes rhinoceros 1. 
3. Adults, male and female, of O. rhinoceros L. (All about natural size.) 
PLATE V. 
-4. Heart of coconut showing burrow made by adult of O. rhinoceros, and 
a female beetle working at center of tree. (One-half natural size.) 
PLATE VI. 
1. Kgg of Rhynchophorus ferrugineus Fabr.; magnified portion shown 
at I b. 
. Head of larva of same. (X 24.) 
3. Labium of larva of same. (X 3.) 
4. Diagram of work of larve in base of coconut trunk, showing points of 
entrance, as at A. 
te 
Piate VII. 
1. Larva of Rhynchophorus ferrugineus Fabr. 
2. Pupa of Rhynchophorus ferrugineus Fabr. 
3. Cocoon of R. ferrugineus Fabr., showing beetle partly emerged. 
4. Cocoon of Cyrtotrachelus sp. (All about natural size.) 
Puatre VIII. 
1. Adults of R. ferrugineus Fabr. (About natural size.) 
2. Adults of Rhynchophorus sp. (About natural size.) 
3. Work of larve of R. ferrugineus Fabr. in wood of coconut near roots. 
The larve entered from the lower left. 
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