290 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



PLATE 25 



Fig. 13. Lineus vegetus. 



Figs. 14-19. Micrura pardalis. Variations in color patterns. Fig. 14. 

 Variety with homogeneous black spotting. Fig. 15. Variety 

 lineata with brown spots fused into lines which are inter- 

 rupted by transverse colorless bands. Ocelli are shown on 

 one side, with one row dorsal and the other ventral to ce- 

 phalic groove. Fig. 16. Variety with minute black spots in 

 linear arrangement. Fig. 17. Variety with scattered black 

 spots and with indications of transverse colorless bands. Fig. 

 18. Variety with regularly arranged brown spots and dis- 

 tinct transverse colorless bands. The ocelli on dorsal and 

 ventral borders of cephalic groove are shown. Fig. 19. Very 

 young individual with few ocelli and few grayish spots. 



Fig. 20. Prosorhochmus albidus. Viviparous individual with 2 young, 

 because of the retention of fertilized eggs within the ovary. 

 Most individuals are oviparous. 



Fig. 21. Carinoma mutabtlis. (To the left of Fig. 22.) Sexually ripe 

 male. Individuals of both sexes when sexually immature are 

 white anteriorly, with pale yellow or brownish intestinal 

 regions. 



Fig. 22. Carinoma mutabilis. Sexually ripe female. Shape of head 

 changes constantly in living worm. Compare Fig. 21. 



Fig. 23. Lineus rubescens. Anterior end of body, showing ocelli. 



