CRIORIUIIXA. 



281 



European C. oxyacatitha;, Meig., lias been bred from mud and 

 flood debris. Lundbeck (Dipt. Danica, v, p. 491, 1916) describes 

 a puparium of tliis same species, found under moss on a tree- 

 stump ; it is nearly cylindrical, ventrally flattened, atfenuated in 

 front and behind, with short lateral fllaments behind, and a 

 posterior spiracular process about 1 mm. long. 



Range. Europe, Siberia, Japan, India, North America, Chili. 



Some closely alHed genera or subgenera exist, which, however, 

 do not touch the Oriental species. The groups in question are 

 not at all well defined. Deiaeches, Walk., has contiguous eyes in 



Fig. 54. — Criorrhhia imitator, Brun., 5. 



the (S , the snout produced diagonally, and di^-nse pubescence like 

 that of Bombus. The separatiou of even Ci/nori'hina from 

 Oriorrhina seems doubtful ; the characters of contiguous or 

 separated eyes in the 6 , direction of production of the epistome, 

 thickening of the hind femora and even the presence of a tooth- 

 like process, together with minor characters such as the degree 

 of pubescence and shape of the abdomen, all vary so much as to 

 make subdivision of the genus almost impossible if all the world's 

 species be considered. 



Table of Sjiccies. 



1. Kfiisely pubescent species, with a general 



resembliince to Boinhtis 1*. 



Moderately pubescent specie;?, with more 

 resemblunce to Apis 4. 



2. Wings mainly dark brown ; eyes closely 



contiguous for .■some dit^tance in J simioides, Brun., p. L'82. 



Wings grey, sliglitly darkened anteriorly 

 or along the veins; eyes sliglitly sepa- 

 rated in S (of ^'- itiiitator ; the c? of 

 C. vivida is unknown) .'j. 



