REPORT OF COMMISSIONERS OF INLAND FISHERIES. 179 



Plate IX, Fig. 15. Stomach of a second-stage lobster. 

 " X, " 16. Stomach of a first-stage lobster. 



1. Cardiac ossicle or anterior dorsal cardiac plate, 

 r. Posterior part of above plate. 



2. Urocardiac ossicle or posterior dorsal cardiac plate. 



3. The prepyloric ossicle or median tooth. 



4. Pyloric ossicle or anterior dorsal pyloric plate. 



5. Pterocardiac ossicle or anterior dorso-lateral cardiac plate. 



6. Zygocardiac ossicle or lateral tooth. 

 6'. Lateral bristle plate of larval stomach. 



7. Anterior dorso-lateral pyloric plate. 



8. Gastrolithic bar. 



9. Accessory lateral cardiac ossicle or upper intermediate cardiac bar. 



10. Infero-lateral tooth. 



11. Lower intermediate cardiac bar. 



12. Upper ventro-lateral cardiac bar. 

 1.3. Antero-lateral cardiac bar. 



14. Lower ventro-lateral cardiac bar. 



15. Ventral cardiac plate. 



16. Posterior intermediate cardiac bar. 



17. The middle dorsal pyloric plate. 



18. The posterior dorsal pyloric plate. 



19. The upper intermediate pyloric plate. 



20. The posterior intermediate pyloric plate. 



21. The middle intermediate pyloric plate. 



22. The lower intermediate pyloric plate. 



23. The ventral pyloric plate. 



24. The posterior lateral intermediate pyloric plate. 

 A' The lower lateral dilator. 



A.D. Lower anterior dilator. 



A.D.' Anterior dilator. 



A. P. Posterior dorsal pad. 



C. Lateral pyloric pouch. 

 CM. Intestinal csecvun. 



C.C. Partition of bristles between the upper and lower Cardiac canals. 



C.P. Cardio-pyloric valve. 



C.P.' The dorsal cardio-pyloric valve. 



D. Dorsal pyloric valve. 

 D.C. The upper pyloric canal. 

 D.P. Posterior dorsal pad. 



