Hydrachnellae 



285 



chonella). The cheliCerae are slender in the preceding and strong in 

 the latter genus; the palpus is not shearlike. No swimming hairs are to 

 be found on the legs and the tarsal claws have accessory ventral teeth. 

 Two genital plates with many genital suckers are present. 





Figure 205 Clathrosperchon minor 

 Lundblad. Dorsum of male. 

 (After Lundblad 1941) 



Figure 206 Clathrosperchon minor 

 Lundblad. Venter of male. 

 (After Lundblad 1941) 



Genera: 



1. Clathrosperchon Lundblad, 1936 



Type. Clathrosperchon crassipalpisJLundhlad, 1936 



2. Clathrosperchonella hundhlad, 1937 



Type. Clathrosperchonella asterifera Lundblad, 1937 



Ctenothyasidae Lundblad, 1936 



Figure 207 



Diagnosis: The body of these mites is strongly skinned and has 

 papillae but lacks armor. An apparently rudimentary median eye is 

 present and the lateral eyes are single-capsuled. The skin gland areas 



