NO. 10 



p-p:EniNr, organs of aka( mnida — snodcrass 



13 



Fat 



Pat 



Tap 



+Pt:r.i- \-— ^^' -L^ 



Pat Ivth 



Fig. 5. — Segmentation of the chelate pcdipalp. 



A, Trithyrcus camhridfji (Thor), Pcdipalpida-Uropygi-Schizopcltidia, pcdi- 

 palp and muscles (from Burner, 1904, but "tibia" and "first tarsal segment" of 

 Borncr here interpreted as patella and tibia respectively). H, Mastitjoproctus 

 gigantcus (H. Lucas), Pedipalpida-UropyKi-Holopeltidia, distal segments of 

 pedipalp (from Barrows, 1925, but "tibia" and "metatarsus" of Barrows here 

 interpreted as patella and tibia). C, same, patella and chela of pcdipalp. D, 

 Pandinus sp., Scorpionida, pedipalp. E, Ccntruroidcs sp., Scorpionida, chela, 

 showing depressor muscle of tarsus in basal segment. F, same, showing muscle 

 from patella to base of movable finger. G. Dasychcrucs inqmlinuj Chamb.. 

 Cheloncthida, pcdipalp (from Chamberlin, 1931, but "tibia" of Oiambcrlin 

 interpreted as the patella). 



Lettering as on figure 4. 



