402 



ON A GENUS OF AMPHIPOD CRUSTACEA. [Apr. 28, 



Fig. 1 1. Upper and lower lips, young specimen T. rascMi. X 42. 



12. Mandible, adult ? „ X 42. 



13. „ young specimen „ X 75. 



14. First maxilla, adult 9 ,. X 42. 



15. Apex of the oirter plate, first maxilla, adult ? „ X 265. 



Plate XIX. 



Fig. 1. Apex of tlie outer plate, first maxilla, adult $ . 



For comparison T.nicceense. X 265. 



2. First maxilla, young specimen T. raschii. X 75. 



3. Apex of the outer plate, first maxilla, young 



sijecimen „ X 265. 



4. Second maxilla, adult ? „ X 42. 



5. „ „ young specimen „ X 75. 



6. Palp of maxilliped, right side, adult ? „ X 42 . 



7. Maxillipeds, slightly Sattened, seen from the under 



side, young specimen ,, X 75. 



8. First gnathopod, showing the vmder surface, $ ... „ X 17. 



9. ,, „ of immature specimen „ X 17. 



10. „ „ of a young specimen, taken from 



the incubatory pouch ,, X 42. 



11. Second gnathopod, adult ? „ X 17. 



Plate XX. 



Fig. 1. Claw of second gnathopod, adult ? T. raschii. X 150. 



2. Tip of seta from the incubatory lamella, second 



gnathopod, ? „ X 265. 



3. One of the stiff setje, distal margin, 6th joint, second 



gnathopod, $ „ X 435. 



4. Tip of "jointed seta," anterior angle, 6th joint, 



second gnathopod, $ „ Xabout500. 



5. Tip of "hyaline hair," anterior angle, 6th joint, 



second gnathopod, 9 _. „ Xabout500. 



6. Second gnathopod, young specimen , „ X 42. 



7. Claw of the second gnathopod, young specimen „ X 265. 



8. First perajopod, adult $, showing the branchial 



vesicle and the inciibatory lamella ^ „ X 17. 



9. First perseopod, young specimen „ X 42. 



10. Second peraopod, adult $ „ X 17. 



11. " Nail " of the 7th joint, 2nd peraiopod, adult $ ... „ X 265. 



Plate XXI. 



Fig. 1. Second peraeopod, young specimen T. raschii. X 42. 



2. Third perajopod, adult $ „ X 17. 



3. „ „ young specimen „ X 42. 



4. Fourth perseopod, adult ? „ X 17. 



5. „ „ young specimen „ X 42. 



6. Fifth perffiopod, adult ? „ X 17. 



7. „ „ j^oung specimen „ X 42. 



8. Tip of distal cleft spine, second pleopod, adult ? ... „ X 265. 



9. First uropod, adult ? „ X 17. 



10. Proximal spine, inner ramus, first uropod, adult $ . „ X 265. 



11. Sensory setule, outer ramus, first uropod, adult $ ... „ X 265. 



12. „ „ „ „ second uropod, young 



specimen „ X 265. 



13. Third uropod, adult ? „ X 17. 



14. „ „ „ For comparison T.nicceense. X 17. 



15. Telson and uropoda, young specimen T. raschii. ' y( 42. 



16. Second joint, third uropod, yoimg specimen „ X 265, 



17. Telson, adult ? „ X 17. 



18. „ immature specimen „ j^ X 42. 



