42 
J. R. AUDY 
Summary. 
It is important for the zoogeographer to know how completely various localities have 
been sampled, and to be able to assess and compare casual, extensive, and intensive collections. 
The tabular summary here presented attempts to give this information for all noteworthy 
collections of trombiculid mites in the Asiatic-Pacific area. 
Comments are offered on the effects of ( a ) bias in collecting host-species or in 
particular habitats, ( b ) deforestation, which impoverishes the fauna, and (c) seasonal changes. 
Tentative notes are made on the world distribution of generic groups. 
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STUD. INST. MED. RES. 
