INDEX. 



529 



Spirorbis valida, 44. 12, 14. 

 Stegocephalns ampulla, 16. 

 Stenothoe peltata, 29, 3. 

 Sternaspis fossor, 16, 18. 

 Stromolophus meleagris, 26. 

 Strongylocentrotus Droljachiensis, 5, 7, 8, 



9. 10, 11, 13, 21, 49. 

 Stylifer, 24. 



Stimpsonii, 49, 8, 10. 

 Styliola, 26. 



acus, 21. 

 Syrrhoe bicuspis, 30. 



creniilata, 30, 12. 



Terebellides Stroemi, 17, 19, 23. 

 Terebratiilina septentrionalis, 13, 14, 15, 



18, 23. 

 Thacher, J. K., median and paired fins, a 

 contribution to the history of vetebrate 

 limbs, 281. 

 Thamnocnidia tubularoides, 250. 

 ^Thracia myopsis, 15, 17, 23. 

 [ truncata, 6. 



I Thecophora ibla, 55, 7. 

 I Thelepus cincinnatus, 6, 8, 12, 14, 20. 

 \Thessarops hastata, 30. 

 Thuiaria articulata, 13. 

 Thy one fusus, 51. 

 raphanus, 52. 

 scabra, 51, 18, 24. 

 Thyropiis, 26. 



species, 10, 26. 

 Tiron acanthurus, 30, 12. 

 Torellia vestita. 49, 23. 

 Trachydermon album, 13, 14, 17, 23. 



Trachynema digitale, 26. 



Transcendental curves, by H. A. Newton 



and A. W. Phillips, 97. 

 Trichotropis borealis, 12. 

 Tritia trivittata, 3, 5. 

 Tritropis aculeata, 12, 14. 

 Trophon Gunneri, 12, 14. 

 Trophonia aspera, 16, 18. 

 Tubularia elegans, 253, 250. 

 indivisa, 7, 9, 10, 11, 13. 

 Turnbull, F. M., anatomy and habits of 



Nereis virens, 265. 



Turritella acicula, 20. 



erosa, 13, 20, 44. 



reticulata, 14, 15. 



Unciola irrorata, 3, 5. 10, 16, 19, 25. 

 Urticina crassicornis, 7, 9. 10, 11, 13, 24, 

 25. 



digitata, 54. 



nodosa, 54, 11. 



Velutina laevigata, 17, 49. 



zonata. 23. 

 Vescicularia armata, 11. 

 Vetumnus serratus, 31, 5, 19. 

 Virgularia lyungmanii, 54, 24. 



Xenoclea Batei, 34. 



megachir, 32, 3, 19. 



Yoldia limatula, 4. 

 obesa, 18, 19, 23. 

 thraciformis. 19. 



