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pods of its host-plants in the field. The same is recorded from India, 

 though in North America it readily attacks its host in the field. It 

 has been recorded as breeding in stored cowpeas and peas and the 

 author has bred it experimentally from the same hosts as those 

 recorded for B. chinensis and also from Phaseolus lunatus, P. acuti- 

 folius, Vigna lutea, Dolichos lablab and D. sudanensis ; from 40 to 

 50 days is required for the life-cycle during the winter season in 

 Honolulu. 



Bruchus prosofis has been known for many years in Hawaii as a 

 serious enemy of algaroba {Prosofis juliflora). It has also been recorded 

 as breeding in pigeon peas. Normal oviposition of this species was 

 difiicult to secure experimentally ; apparently the female deposits 

 eggs through accidental openings in the cuticle and fibrous layer 

 of the pod. 



A species of Spermophagus has been found infesting various beans 

 grown on the Agricultural Experiment Station grounds ; these had 

 been infested during storage and were Very much damaged. If, as 

 the author suspects, the Bruchid concerned is Sfermo'pliagus (Zabrotes) 

 pectoralis, Sharp, it has been previously bred from beans and cowpeas. 

 The author has reared it experimentally from Phaseolus vulgaris, 

 P. lunatus, P. articulatus, P. acutifolius, Vigyia chinensis, Cajanus 

 indicus, Glycine hispida, Cicer arietinum and Pisum sativum. 



Pachymerus {Caryoborus) gonagra breeds in the seeds of several 

 trees and shrubs, including Tamarindus indicus, Cassia nodosa, 

 C. fistula, C. grandis. Acacia farnesiana, Prosopis juliflora, Bauhinia 

 tomentosa, B. monandra and Caesalpinia pulcherrima. Eggs are laid 

 indiscriminately on the pods of its host-plants, sometimes on the 

 seeds and frequently in other places where the larva has no chance 

 of finding food. The larval stage is passed within the seed ; this, how- 

 ever, is usually too small to contain the pupal cell, which is therefore 

 constructed partly within and partly outside the seed, by scraping 

 away a circular patch on the pod until only a thin membrane remains, 

 through which the adult emerges. 



Parasites of Bruchids in Hawaii include Uscana semifumipennis, a 

 Trichogrammatid egg-parasite that has been established for some 

 years and is now parasitising about 90 per cent, of Pachymerus gonagra, 

 and also attacks the eggs of Bruchus pruininus, B. chinensis and the 

 Dolichos weevil ; it probably attacks any species that deposit their 

 eggs on the surface of pods and seeds in the field and constitutes a 

 valuable addition to the parasitic fauna of the Island, particularly 

 as it seems to be the only known egg-parasite of Bruchids. 



A Braconid, Heterospilus prosopidis, was bred from sweepings of 

 Bruchus pruininus, and has since been bred in Honolulu from 

 B. proso'pis in the pods of Prosopis juliflora, from the Dolichos weevil 

 in the beans of Dolichos lablab within the pods, from B. pruininus 

 in the seeds of Leucaena glauca on the -ground, and from B. chinensis 

 in pigeon peas. The method of oviposition is described ; as the host 

 can only be attacked during the short period when the membrane 

 of the pod "is sufficiently thin for the short ovipositor of H. prosopidis 

 to penetrate it and reach the host, the extent of parasitisation only 

 reaches 10 to 15 per cent. It cannot therefore be considered of great 

 importance in the control of Bruchids and it is not considered likely 

 to attack them in stored peas and beans. In captivity, H. prosopidis 



