PLATE XXX. 



1. Pedalion minim 



la. 



16. 



Ic. 



Id. 



Ic. 



I/- 



Iff- 



Ih. 

 2. 



3. 

 4. 

 4a. 



46. 



Hexarthra polyptera 

 (Ecistes ptygura 

 Seison Grubei . 



5. Drilophaga bucc-phalus 



0. Balatro calvus . 



7. Copeus spicatua 



8. Brachionus Mulleri . 



9. Brachionus angularis 



side view ........ H 



dorsal view H 



front view ....... H 



side view (side limbs removed) showing viscera H 



dorsal view, showing muscles . . . . H 



^ , T i ( 1, depressors 

 0, dorsal limb \ ' 



[2, elevators 



. T v i (3, depressors 



p. inner lateral limb J . * 



(4, elevators 



, v i f 5, depressors 

 y, outer lateral limb J 



(6, elevators 



, v i ( 7, depressors 

 S, ventral limb 



( 8, elevators 



The ventral depressors (5, 5), of the outer 

 lateral limbs, meet a similar dorsal pair on 

 the mid-dorsal and mid-ventral surfaces ; 

 and the four together encircle the body. 

 There is a similar encircling set of four 

 (1, 1) belonging to the dorsal limb. 



ventral view, showing muscles . . .II 



9, ventral longitudinal muscles for retract- 

 ing head 



side view, showing muscles . . . .11 



10, dorsal longitudinal muscles for retract- 

 ing head 



11, right depressor of dorsal antenna 



12, circular muscles of the neck 



13, right depressor of chin 



male, dorsal view ...... H 



male, side view H 



dorsal view . . . (after Dr. Schmarda) 

 head, dorsal view, showing hooks . . . H 

 female, retracted ; side view . \ 

 male, extended ; side view . [ (after Dr. Claus) 

 trophi . . . . ./ 



side view ; attached to Lumlriculus { ^ 



1 Vejdovsky) 



ventral view . . (after M. Ed. Claparede) 

 side view ........ H 



ventral view ....... H 



dorsal view ....... H 



aperture for lateral antenna . . . ,11 



