O"- t> 



O I o 



s. t. setal tubes. 



sto. stomach. 



su. supernumerary nnisrle. 



t. testes. 



EDWARD S. MOUSE ON 



V. ventral shell. 



v. in. ventral mesentery. 



v. r. ciliary ridge of visceral sinus. 



v. t. vascular twig. 



PLATK 3!). 



Reproductions of original drawings to illustrate color in living Brachiopoda. 1 



Fig. 1. Linyula h'phlula from ventral side. 



Fig. 2. Brachia of L. Irpidula showing color of border and cirri. 



Fig. 3. Anterior portion of pallium of L. lepidnla. 



Fig. 4. Portion of pallium of Gluttidia pijram'ulntit showing three rows of gill ampullae and pigmentation between. 



Fig. 5. View of pallium showing anterior pallial folds. 



Fig. 6. Enlarged view showing pigmentation of pallial fold. 



Fig. 7. Cirrus of G. pyruiniduta showing pigmentation. 



Fig. 8. Nephridia of Dalllmt urinjii. 



Fig. 9. Nephridia of Terebrntulinii ncpteiitriunulix. 



Fig. 10. Spermary thread of T. septentriunaUs. 



Fig. 11. Border of pallium of Terebratalia furi'milca. 



Fig. 12. Stomach and immediate part.s of T. fnrKHnini. 



Fig. 13. Ovarian leaflets of 7'. coreanica. 



Fig. 14. Palliilm and pallial sinuses of T. fnri"inl<:n tilled with eggs. 



PLATE HI. 



Appearance in life of various forms. 

 Fig. 1 to 5. Glnitiiliii pyramidata, 



Fig. 1. Dorsal view, at rest. 



Fig. 2. Dorsal shell, oscillating. 



Fig. 3. Side view, dorsal shell elevated. 



Fig. 4. Side view, dorsal shell depressed. 



Fig. 5. Peduncle showing vermiform convolutions with posterior end inelnscd in sand tube. 



Fig. to 15. Liiujitla lepidula. 



Figs. 6, 7, 8, and <J. Various attitudes. 



Fig. 10. Burrow in sand. 



Fig. 11. Eleven individuals attached to bottom of bowl by sand accretions ; compare with Glottidia (41 : i:i). 



Figs. 12 and 13. Showing attitude in sand, with setal tubes formed. 



Fig. 14. Front view showing anterior pallial folds and setal tube openings. 



Fig. 15. Side view with lateral setae vertical and meeting. 



Fig. 10 to 18. Linyidn aiutlimi. 



Fig. 16. Showing end 'of peduncle encased in mud tube. 

 Fig. 17. Young specimen with brachia extended laterally. 

 Fig. 18. Dorsal view of partially grown individual. 

 Fig. 19. Side view of Discinisca lamdlosa from alcoholic specimen. 



1 For explanation of details of these figures see succeeding plate.-.. 



