FIGURE 7 in Pyura (Tunicata: Ascidiacea: Pyuridae) on the coasts of Panama

FIGURE 7. Pyura longispina sp. nov. A–B. Animals in the field. C. Lining of the oral siphon with spinules. D. External view of siphons with lobes and spinules in a preserved animal. E. Internal long spinules. F. Short spinules form the border of the siphon. G. Detail of oral siphon lining with spinules. H. Internal lining of the oral siphon. I. Internal lining of the oral siphon with white structures. Scale bars = 50 µm.