PATAGONIAN EXPEDITIONS! ZOOLOGY. 



Fig. 12. 



Fig. 1 3. 

 Fig. 14. 



Fig. 15. 



Fig. 1 6. 

 Fig. 17. 



Fig. i 8. 

 Fig. 19. 



Fig. 20. 

 Fig. 21. 



Fig. 22. 



EXPLANATION OF PLATE L. 



SEMISCOLEX VARIABILIS : Dorsal aspect of reproductive organs in 



situ, the vagina only being slightly dis- 

 placed to the right. From a dissection 

 of specimen shown in Fig. i. The posi- 

 tion of the vasa efferentia is somewhat 

 doubtful, as they could not be distinguished 

 with certainty from the folds of the vas 

 deferens, X TT 

 GLOSSIPHONIA MICH^LSENI : Alimentary canal, X -ir 



" " Reproductive organs from above ; testes 



and left ovary omitted, X -& 



GLOSSIPHONIA SIMPLEX : Reproductive organs, from above. In this 



specimen the two sperm ducts are 

 crossed and the one displaced to the 

 left in reality belongs to the right side. 

 The ovaries are also crossed. Testes 

 of right side omitted, X ^f 

 GLOSSIPHONIA DUPLICATA : General character of alimentary canal, 



dorsal view, X ^ 



Dorsal view of anterior twelve somites, 

 showing color-pattern as exhibited by 

 a heavily marked example, but the 

 longitudinal stripes are somewhat too 

 prominent, X ^ 



" " Ventral view of same, X ^ . 



" Dorsal view of posterior end of same 



(type) specimen, X s 

 " " Ventral view of same, X ^ 



" Lateral view of posterior end of same, 



X ^r 

 " " Lateral view of anterior end of same, X 



2 1 

 ~~ 



Fig. 23. GLOSSIPHONIA SIMPLEX: Dorsal aspect of lanterior end, X ^r 

 Fig. 24. " " Dorsal aspect of posterior end, Xrr 



Sensillae are shown on somite XXIV 

 LETTERING : As in Plate XLIX. 



PAGE 



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 685 



684 

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676 

 675 



677 



676 

 682 

 683 



(VOL. in) 



