MEMOIRS OF THE QUEENSLAND MUSEUM. 
300 
Trigona wybenica n. sp. 
Worker (type). Length about 3*75 mm. ; head and thorax shining black.. 
except that the scutellum, metathorax, and sides of thorax posteriorly vary from 
dull honey colour to black (perhaps a question of maturity) ; mandibles light 
yellowish ferruginous, darker and rounded at apex ; malar space very short : labrum 
light yellow ; face and front thinly beset with plumose white hairs ; scape entirely 
clear orange-ferruginous ; flagellum black or very dark above, reddened beneath, 
especially apically ; sides of thorax with white pruinose pubescence ; hair of 
scutellum pale and very short : teguke piceous ; wings clear, stigma and nervures 
pale brownish ; legs mainly black, but knees reddened and tarsi with small joints 
ferruginous, or (probably due to immaturity) the basitarsi may be reddish, and the 
hind tibiae shining honey colour on inner side, with a large oval dark spot. The 
abdomen is short and in alcohol appears honey colour, but on drying it becomes 
very pale yellowish. 
Male. Flagellum longer ; abdomen dorsally dark brown, with the sutures 
pallid, beneath very pale yellowish, certainly very near to T. Iceviceps Smith, but 
differing by the very pale abdomen, and I think certainly distinct. Singapore must 
be considered the type locality of T. Iceviceps ; for Aru I. specimen see Ann. Mag. 
Nat. Hist., Aug. 1923, p. 241. The specific name is derived from Wyben, which 
Mr. Hockings states is the native name of Thursday Island, where he collected the 
specimens. 
Mr. Hockings sends the following notes : — i£ Is the smallest and has a yellowish 
abdomen : resembles Kootchar in some respects. Wax is dark chocolate ; constructs 
a tubular protruding entrance as in Kootchar. Brood nest is a pile of pilular cells, 
also honey and pollen pots are constructed in separate positions ; the brood nest 
sometimes is extended into any temporarily vacant adjacent space.” 
Megachile chrysopyga Smith. 
Female: Perth, W.A. (6. H. Hardy). Male: Bunva Mts., Q., 3 000 ft 
Jan. 4, 1926. 
Megachile quinquelineata Cockerell. 
Brisbane, March 18 ( H . Hacker). 
Megachile macleayi Cockerell. 
Two females : Hughenden (H. H. Batchelor) 
Megachile henrici Cockerell. 
Female. Scopa with more black than usual. Lugano, N.S.W. ( H . P. Schrader). 
Megachile lucidiventris Smith. 
Females: Lugano, N.S.W. (H. P. Schrader ); Gordonvale (IF. C. Dormer). 
Megachile latipes Smith. 
Males : Gordonvale (IF. C. Dormer) ; Kiata, Victoria, Dec. 27 (F. E. Wilson ). 
Is this the male of M. lucidiventris ? 
Megachile semiluctuosa Smith. 
Male : Linga, Viet., Oct. 1922 (F. E. Wilson ). 
