18 

 5. Bkuchus prcixinus. 



This species has been bred experimentally from the follow- 

 ing additional hosts: Cassia siamea, Samanea smnan, Acacia 

 decurrens, Sesbania coccinea. and Cassia grandis. 



Breeding this from the seeds of the monkeypod (Samanea 

 saman) is of interest since we have no local record of this spe- 

 cies being attacked by Bruchidae, the seeds being protected h\ 

 the chambered pods with a gummy or syrupy content. 



The seeds of Cassia nodosa have a copious albumen and the 

 cotyledons reach the seed coat only along their edges. When 

 the eggs are laid immediately over the cotyledons the larvae 

 are able to penetrate into them and develop. When they are 

 placed over the albumen the larvae are unable to penetrate this 

 and perish. 



I have retained a lot of infested seeds of Sesbania sesban 

 in which this species was breeding for more than a year and 

 the generations have followed one another until the seed are 

 all practically destroyed. There is then no doubt that the 

 species can maintain itself in storage indefinitely. 



6. Bruchus quadrimaculatus. 



This species was observed on Maui attacking cowpeas in the 

 field. It is a most serious enemy of the cowpea and pigeon 

 peas in storage but does not appear to attack the latter in the 

 field on Maui. 



T. CaRYOBORUS GONACtRA. 



A larva of this species successfully completed its gTowth 

 during Feliruary, 1918, in a pod of Cassia nodosa by proceed- 

 ing from one withered undeveloped seed to another. 



8. The Two-Spotted Bean Weevil Identified. 



As was suggested this species proves to be Spermophagus 

 pectoralis Sharp according to the determination of Mr. 

 Schwarz. 



