358 THE VOYAGE OF H.M.S. CHALLENGER. 



Genus 4. Porpema, Hkl. (95, p. 30). 



8. Porpema medusa, Hkl. (Eeport, p. 61, PL XLVIL). South Atlantic, Station 327. 



9. Porpema lenticnla, Hkl. (Morph. Siphon.). Indian Ocean. 



10. Porpema pileata, Hkl. (Morph. Siphon.). South Pacific (coast of Chili). 



Genus 5. Porpitella, Hkl. (95, p. 30). 



11. Porpitella pectanthis, Hkl. (Eeport, p. 64, PI. XLVL). North Pacific, Station 244. 



12. Porpitella ecerulea, Hkl. {= Porpita ccerulca, Esch., 1, p. 179, Taf. xvi. fig. 5). Tropical 



Pacific. 



13. Porpitella radiata, Hkl. ( = Porpita radiata, Brandt, 25, p. 40). Tropical Pacific. 



Genus 6. Porpita, Lamarck (90, p. 483). 



14. Porpita mediterranea, Esch. (1, p. 177). Oldest description and figure hy Forskal (11, p. 103, 



Tab. xxvi. fig. L, 1). Best description and figure by Kolliker (4, p. 57, Taf. xii.). 

 Mediterranean. 



15. Porpita liniweana, Lesson (3, p. 588). Best description and figure by Alex. Agassiz (57, p. 12, 



pis. vii.-xii.). North Atlantic. 



16. Porpita umhella, Esch. (1, p. 179 = Porpita gigantea, Puron, 14, pi. xxxi. fig. 6). Tropical 



Atlantic (?). 



17. Porpita indica, Hkl. ( = Porpita liitkeanal, Brandt, 25, p. 41). Indian Ocean. 



18. Porpita fungia, Hkl. (Eeport, p. 67, PI. XLV.). North Pacific, Stations 253 to 255. 



19. Porpita pacijica, Lesson (22, pi. vii. fig. 3). Tropical Pacific (near Peru) (?). 



20. Porpita australis, Hkl. (Morph. Siphon.). South Pacific. 



Family III. Velellidj;, Esch. (1, p. 165). 



Genus 7. Bataria, Esch. (1, p. 166). 



21. Bataria cristata, Hkl. (Eeport, p. 79, PI. XLIV.). Tropical Atlantic, Station 348. 



22. Bataria mitrata, Esch. (1, p. 168, Taf. xvi. fig. 2). Tropical Atlantic, off the Cape Verde 



Islands (?). 



23. Bataria cordata, Esch. (1, p. 167, Taf. xvi. fig. 1). North Atlantic (?). 



Genus 8. Velella, Lamarck (90, p. 481). 



24. Velella spirans, Esch. (1, p. 172= Velella limbosa, Lamk., 90). Oldest description and 



figure by Forskal (11, p. 104, Tab. xxvi. fig. k). Best description and figure by Kolliker 

 (4, p. 46, Taf. xi. figs. 9-15). Mediterranean. 



