256 BRITISH TYROGLYPHID.E. 



illustrate Canestrini's papers. This error is tliat the 

 secondary hairs or barbs which spring from the rachis 

 of the principal dorsal hairs or plumes of the female, 

 which form the characteristic of the species, are sharply 

 turned at their ends in the real creature ; so that the 

 turned end of each barb touches, or almost touches, 

 the barb next to it and more distal than itself. These 

 turned ends of the barbs were mistaken for the edge 

 of a membrane joining the barbs, and thus the hairs, 

 which are simply plumose, were drawn and described 

 as leaf -like membranous expansions with radiating 

 nervures, such as are found on Qlycyphdgus palmifer 

 and the foreign species G. pterophorus. This error 

 completely changed the real appearance of the species, 

 and it was not discovered until Berlese examined 

 Canestrini's specimens, and pointed out the mistake in 

 1891. Up to that date I never suspected that the 

 specimens in my cabinet were identical with Armanelli's 

 species. 



Female. Male. 



Average length without rostrum about . '31 mm. '20 mm. 

 breadth about . . '24 , -15 



length of legs, first pair 

 second pair 



third pair 

 fourth pair 



16 

 14 

 15 

 18 



16 

 16 

 17 



18 



This species shares with Glycyphagus palmifer the 

 distinction of being the most beautiful of all the Tyro- 

 glyphidse ; probably G. Canestrinii will generally be 

 considered the more elegant. 



Colour yellowish grey, shading off to pink or pinkish 

 red at the edges. Rostrum and legs reddish. 



Texture rough and dull, the male simply granular ; 

 the female covered on the dorsal surface with large 

 wart-like projections of the cuticle irregularly scattered, 

 but averaging about *01 mm. apart, the interspaces 

 being twice or three times as wide as the actual raised 

 tubercle, which projects about 7 /i, and is irregular in 

 shape, often bifid or trifid at the apex (PL XI, figs. 

 15, 16). 



