Genus— LAGENOPL ASTES. 
Lagenoplastes Gould, Handb. Birds Austr., Vol. I., 
p. 112 (Sept. ?=Dec.), 1865. Type (by original 
designation) Collocalia ariel Gould. 
Continuing after Hylochelidon , Gould introduced this genus with the following 
remarks : “ The little Fairy Martin of Australia, the constructor of a singular 
retort-shaped nest, is the type of the present genus, in which I think must also 
be placed another species in my collection, which I received from India, and 
which precisely resembles it in form and greafcly in colour. What the members 
of the genus Hylochelidon are to the Swallows, those of the present are to the 
Martins, from which they differ in their diminutive and bare tarsi, and from 
the American Hylochelidons in their more feeble structure and colouring.” 
This genus I consider a good one, easily recognised, by its different 
coloration, its broader bill, minute feet, longer tail, regularly forked, but 
comparatively shorter wings. 
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