EXPLANATION OF PLATE A. 



%* In all cases througliaut the plates, both the plain and coloured, the figures tJiat have 

 the initial H attached to them liave been drawn from life by Dr. Hiidson, and those with the 

 initial G, also from life, by Mr. Gosse. 



BRACHIONUS RUBENS and the details of its structure. 



1. Dorsal view . . . . . H 



2. Ventral view ; upper half . . . H 

 8. Lorica and muscles ; dorsal view . H 



4. ventral view . H 



5. Side view ...... II 



G. Mastax and trophi ; dorsal view . . G 



7. Trophi ; ventral view G 



8. Malleus expanded by pressure . . G 



9. Malleus, as in nature . . . G 



10. Incus, side view G 



11. Ganglion and eye . . . . H 



12. Extremity of foot . . . . H 

 18. Male; penis withdrawn (after Dr. Cohn) 



14. Male ; penis extruded (after Dr. Colin) 



15. Dorsal antenna . . . . H 

 1C. Eplnppial egg (after Dr. Colin) 



cloaca 



salivary gland 



gastric gland 



foot gland 



lateral canal 



vibratilc tag 



contractile vesicle 



ovary 



germ 



ovum 



penis 



sperm sac 



longitudinal muscle 



ganglion 



eye 



dorsal antenna 



lateral antenna 



tactile stvle 



