179 



EXPLANATION OF PLATE I. 



Right eye patch, Sinella curviaeta Brook. 

 Claws, Sinella curviseta Brook. 

 Mucro, Sinella curviseta Brook. 

 Claws, Isotoma bidenticula Guth. 

 Mucro, Isotoma bidenticula Guth. 

 Mucro, Isotoma aquae n. sp. 

 Postantennal organ, Isotoma aquae n. sp. 

 Ocelli, Isotoma aquae n. sp. 

 Claws, Isotoma aquae n. sp. 

 Mucro, Isotoma besselsii. 



EXPLANATION OF PLATE II. 



Claws, Isotoma aspera n. sp. 



Mucro, Isotoma aspera n. sp. 



Left eye patch, Isotoma aspera n. sp. '■ 



Postantennal organ, Isotoma aspera n. sp. 



Mucro, Isotoma minima Guth. 



Mucro, Isotoma catena Guth. 



Claws, Isotoma catena Guth. 

 Figure 8. Claws, Isotoma palustris MuUer. 

 Figure 9. Mucro, Isotoma palustris MuUer. 

 Figure 10. Antenna, Isotoma palustris Muller. 

 Figure 11. Claws, Drepanura californica n. sp. 

 Figure 12. Mucro, Drepanura californica n. sp. 

 Figure 13. Left eye patch, Drepanura californica n. sp. 



EXPLANATION OF PLATE IIL 



Figure 1. Right eye patch, Entomobrya sexoculata Schdtt. 



Figure 2. Claws on last pair of legs, Entomobrya sexoculata Schott. 



Figure 3. Claws, Entomobrya binoculata Schott. ' i 



Figure 4. Claws, Entomobrya clitellaria Guth. 



Figure 5. Claws, Entomobrya multifasciata TuUb. 



Figure 6. Left eye patch, EnioTOobri/a mMKi/asciata TuUb. ' 



Figure 7. Claws of first pair of legs, Entomobrya laguna Bacon. 



Figure 8. Claws of second pair of legs, Entomobrya laguna Bacon. 



Figure 9. Claws of third pair of legs, Entomobrya laguna Bacon. 



EXPLANATION OF PLATE IV. 



Figure 1. Claws, Tomocerus vulgaris TuUb. 



Figure 2. Claws, Tomocerus bidentatus Folsom. 



Figure 3. Spines of left denies, Tomocerus bidentatus Folsom. 



Figure 4. Claws, Cyphoderus albinus Nic. 



Figure 5. Antenna, Cyphoderus albinus Nic. 



Figure 6. Right eye patch, Achorutes californica n. sp. 



Figure 7. Claws, Achorutes californica n. sp. 



Figure 8. Setae near median dorsal line of thorax, Achorutes californica n. sp 



Figure 9. Left postantennal organ, Achorutes californica n. sp. 



Figure 10. Right postantennal organ, Achorutes californica n. sp. 



Figure 11. Anal horn, Achorutes californica n. sp. 



EXPLANATION OF PLATE V. 



Figure K Mucrone, Achorutes californica n. sp. 



Figure 2. Mucrone, Achorutes citri n. sp. 



Figure 3. Anal horn, Achorutes citri n. sp. 



Figure 4. Left postantennal organ, Achorutes citri n. sp. 



Figure 5. Setae near median dorsal line of thorax, Achorutes citri n. sp. 



Figure 6. Claw, Xenylla colHs n. sp. 



Figure 7. Setae near median dorsal line of thorax, Xenylla collis n. sp. 



Figure 8. Mucrone, Xenylla collis n. sp. 



