. The Australian zoologist. Zoology; Zoology; Zoology. 240 REMARKABLE WASPS AND BEES. There can be little doubt that the tubercles on sternite 2 of the bees Parasphecodes arciferus Ckll. and P. fulviventris Friese are the vestigial remnants of a structure of this type, and the ventral plates on the unique bee, Meroglossa mirancla Raym., are homologous developments of the sternal structures. The apical structure suggests the elements of the apical plates of such bees as Paracolletes and Anthophora. The legs are long and slender, with little hair; the short coxae are large, the anterior pair wit
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. The Australian zoologist. Zoology; Zoology; Zoology. 240 REMARKABLE WASPS AND BEES. There can be little doubt that the tubercles on sternite 2 of the bees Parasphecodes arciferus Ckll. and P. fulviventris Friese are the vestigial remnants of a structure of this type, and the ventral plates on the unique bee, Meroglossa mirancla Raym., are homologous developments of the sternal structures. The apical structure suggests the elements of the apical plates of such bees as Paracolletes and Anthophora. The legs are long and slender, with little hair; the short coxae are large, the anterior pair with a small process showing some relation to the spines of certain leaf-cutter bees. The short trochanters are not clearly divided; the femora having the best development; the tibiae are small. The hind calcariae lack strong teeth, being finely serrated, and carrying considerable hair, but they are remarkable since one is short and the other long, exactly as in the extra- ordinary bees Goniocolletes. The strigil of the anterior leg is short and thick, the malus having two teeth, and the velum narrowly concave, a form very suggestive of that of Megachile and Exoneura. The single calcar of the median pair is similar to the large hind one. The basi-tarsi are long and slender, segments 2, 3 and 4 are short and cup-like in form, 5 being the broadest, with a very large pulvillus and bidentate claws. Each tarsal segment is produced to a small hyaline tooth apically. The wings are large, with the pterostigma long and prominent, the anterior wings with a large dusky cloud along the costal margin; the posterior wings have twelve symmetrical but weak hamuli. The nervures are strongly developed. The pterostigma appears to be in a transitional stage, from a separate cell, for it is bounded by a distinct nervure. There is a well-defined costal cell, and the large radial cell is not at all like the long sinuate radial of the saw-flies; the first cubital cell is large, but the three cubitals are