INDEX. 33 



Page. 



Triehodactylvs anonymus, identity 9 



xylocops'. (See also Trichotarsus xylocopa;.) 



in California, bibliographic reference 26 



Trichotarsus, association with bees 25 



description of genus 25 



hypopial stages 10 



osmise, bibliographic reference 26 



on Osmia from New York 26 



the type species 25 



records of species in United States 25-26 



xylocop:e, bibliographic reference 26 



recorded on Xylocopa from California 25 



Tyroglyphidae, bibliography 26-27 



economic importance 5 



European species in United States S-9 



food habits 5 



genera 9-26 



Hypopzis stage 6-7 



previous work on species in United States 7-8 



structural characteristics 6 



table of genera - ■•-lO 



transformations 6-7 



Tyroglyphus, Aleurobius a synonym - - 1-), 14 



americanus n. sp. , description and food habits 16 



is it T.sirof i', 16 



references in literature as T. si'ro and T. longior. 16 



armipes n. sp. , description and food habits 1<S-19 



breviceps n. sp., description and food habits 17 



coccipJdlus n. sp., description and habits 16-17 



crassipes, bibliographic reference 26 



uncertain origin and identity 7 



curtus, bibliographic reference 26 



uncertain origin and identity 7 



description of genus 13 



descriptions of species 14-19 



farinif, bibliographic reference, as T. siro 27 



description and habits 14 



heteromorphus, bibliographic reference 26 



description and food habits 18 



injury to roots of carnations 8 



Rhizoglypjlms agilis possibly a synonym IS 



krameri, identity 8-9 



lintneri, allied to Canestrini's conception of Tyroglyphus siro 7-8 



bibliographic references 26 



description and food habits 15 



infestation of mushrooms 7-8 



longior, bi})liographic references 26-27 



description and habits 14-15 



identity 7-9, 16 



malus, identity 2.3 



mycophagus, comparison of Tyroglyphus terminalis with Michael's 



figure 18 



identity 8-9 



