'50 



ARACHNOIDEA, 



CASE 

 X. 



Genus Alycus. 

 Clothed, like the preceding, with papillae, and otherwise formed 

 like a Trombidium. 



Alycus roseus {Koch). 



Alycus roseus. Copied from Koch's Ubers. 



2nd Section. — Pond Water Mites. 

 Feet adapted for swimming. Four eyes. 



Genus Eylais {Latr.). 



Nos. Eylais extendens {Latr.). — 7. Magnified sketch of larva; 8. Ditto of 

 7. 8. perfect insect. 



Eyla-s extendens, younq; form. Copied from Dug€s. 



Ditto perfect insect. 

 Size of a mustard seed. 



Of this genus only one species has been described. Its main 

 characters are, that the palpi have the basal joints short, thepenul- 



