Transactions of the Entomological Society of London . had the great mass of resin, which weighed 40 lbs., sawnin half. Roughly speaking the nest is 24 inches long,and 9 inches wide. The resinous parts, about 8 inches atthe top, and nearly the same at the bottom, have numerousirregular oalleries and cavities. Some of these cavitiesare empty, but many of them are filled with pollen. Thiswas soft and spongy when the nest arrived; now it isvery hard, but the appearance is the same. The centralpart of the block is occupied by what one may call thenest proper. This is about 7 inches by 6. It consist
Transactions of the Entomological Society of London . had the great mass of resin, which weighed 40 lbs., sawnin half. Roughly speaking the nest is 24 inches long,and 9 inches wide. The resinous parts, about 8 inches atthe top, and nearly the same at the bottom, have numerousirregular oalleries and cavities. Some of these cavitiesare empty, but many of them are filled with pollen. Thiswas soft and spongy when the nest arrived; now it isvery hard, but the appearance is the same. The centralpart of the block is occupied by what one may call thenest proper. This is about 7 inches by 6. It consists ofinnumerable galleries and chambers which are quiteirregular, separated by yellowish waxy partitions that arenot thicker than stout paper. In these partitions areseen the oval cells containing immattire bees. The cells are 8 millimetres long, and about 4j broad. TRANS. ENT. SOC. LOND. 1908.—PART L (aPRIL) 134 Mr. C. 0. Waterhouse on They are placed quite irregularly as to position and direction, sometimes in groups, sometimes isolated.(Fig. 1.). Fig. 1. Although the Eastern Trigone are numerous and wehave a fair number in the British Museum, all thespecimens are workers, and only workers appear to havebeen described. I was very glad to find some males inthe nest described. Trigona collina, .t. The male so closely resembles the worker that it mighteasily escape observation. The antennae are a trifle longer,and more slender, with the second joint of the flagellumvery short and strongly transverse. The face is relativelynarrower ; the clypeus with its limits ill-detined, and withonly the front margin obscure ferruginous. The posteriortibise are nearly of the same form as in the worker, butthe metatarsus, instead of being very broad and inclinedto be triangular, is parallel and as long as the followingjoints of the tarsus taken together. The abdomen insteadof being obtusely acuminate and pubescent at the apex,is almost truncate and beset with long, stiff, black the un
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Keywords: ., bookcentury1800, bookidtrans, booksubjectentomology, bookyear1836
