Abstract
In this paper are described three species of myobiid mites, two of them as new; and for these species are described two new genera. The first pair of legs is a useful generic character in myobiid mites, the number and shape of the segments, and their setae being rather constant within a genus. The position of setae on the segments helps to establish the identity of the segments in instances where coalescence has occurred. The tarsal claws on the first pair of legs are not always clearly visible, but those on the remaining legs are important characters of generic caliber. The shape of the penis, the nature of the dorsal setae, and the presence of sclerotized areas are all helpful in defining genera. The conspicuous marginal setae do not seem to be useful taxonomically. Previously (Jameson. 1948: 336) the setae about the anus were termed circumanal. Ewing (1938: 183), in his useful paper on this group, inferred that there may be a total of six submedian setae. Arbitrarily then, those setae behind submedians VI are considered circumanals.
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