65 



ARACHNIDA. 



ARACHNIDA 





1. Scorpio, dorsal view. Chelicerse; pedipalpi ; carapace; the pair of large median eyes; group 

 of small lateral eyes ; terga of first seven abdominal segments ; five post-abdominal segments ; telson. 



2. Scorpio, ventral view. Chelicerae ; pedipalpi with stout basal joint ; four pairs of ambulatory 

 legs ; jaw-like process of basal joints of the legs of the first two pairs ; genital operculum (on ist 

 abdominal) ; pectines ; four pairs of pulmonary stigmata ; yth abdominal segment ; postabdomen and 

 telson as in i. 



3. Spider, dorsal view. Chelicerse; pedipalpi; ambulatory legs i 4; eyes; cephalothorax ; un- 

 segmented abdomen. 



4. Mite, ventral view. Thorax and abdomen broadly fused ; chelicerse ; pedipalpi ; ambulatory 

 legs ; reproductive opening and anus. 



