234 MEDUS.E OF THE WORLD. 



derm of the stomach of the polypites and of the radial-canals of medusa-buds contains brown 

 pigment-granules. Von Lendenfeld describes a "nerve-ring" of entodermal cells in the 

 proboscis of the hydroid near the mouth. There is no proof, however, that this plexus is 

 actually a nerve-ring. 



Common on the southern coasts of Australia. Described in detail by von Lendenfeld, 

 1883 (Zeit. fur wissen. Zool., Bd. 38, p. 497). This form is probably identical with Cough- 

 trey's Campanularia bilabiata from the coast of New Zealand; and appears also to be identical 

 with C. compressa described by Clarke, 1873, and Nutting, 1901, from the coast of Alaska. 



Eucopella crenata Hartlaub. 



Eucopella crenata, Hartlaub, 1901, Zoolog. Jahrb., Syst. Abth., Bd. 14, p. 364, taf. 22, fign. 27-31, 33-35- 



Hydrorhiza a wide network, hydranths about 5 mm. high; variable. Stems are thick. 

 Hydrotheca with 1 2 to 14 teeth. Body of hydranth larger than hydrotheca. Gonotheca large, 

 wide, and short, arises by a short stalk from the hydrorhiza. Two medusa? in gonotheca, in 

 different stages of development. The medusae contain the sex-cells before liberation. 



Found at French Pass, New Zealand. 



This form appears to me to be a close variety of or even identical with Eucopella bilabiata 

 Coughtrey=£. campanularia von Lendenfeld= ( ? ) Campanularia caliculata var. macrogona. 



Genus AGASTRA Hartlaub, 1897. 

 Agaslra, Hartlaub, 1897, Wissen. Meeresuntersuch. Kommiss. Meere Kiel, Helgoland, Neue Folge, Bd. 2, p. 504. 



The type species is Agastra mira Hartlaub, of Helgoland and the British coast. 



GENERIC CHARACTERS. 



Eucopidas without manubrium and without tentacles. 8 adradial lithocysts. 4 simple, 

 unbranched radial-canals. 4 sac-like, lobular gonads, 1 upon each radial-canal. Exumbrella 

 smooth and without longitudinal furrows. The hydroid appears to be Campanularia. 



Agastra mira Hartlaub. 



A leptomedusa, Browne, 1897, Proc. Zool. Soc. London, p. 832, plate 49, figs. 3, 3a. 



Agastra mira, Hartlaub, 1897, Wissen. Meeresuntersuch. Meere Kiel, Helgoland, Neue Folge, Bd. 2, p. 504, taf. 22, fign. 8-10; 

 1905, Zoolog. Jahrbuchern, Suppl. 6, p. 561. —Browne, 1898, Proc. Zool. Soc. London for 1897, p. 832, plate 49, figs. 3, 3a. 

 Campanularia caliculata, Hincks (hydroid), see Giard, 1898, Comp. Rend. Soc. Biol. Paris, ser. 10, torn. 5, p. 17. 

 Agastra caliculata, Delap, M. and C, 1905, Annual Report Fisheries of Ireland, 1902-03, Part 2, App. 4, p. II. 



Medusa. — Bell somewhat higher than wide, I mm. high, with scattered isolated nemato- 

 cysts over exumbrella. Gelatinous substance quite thick and of equal thickness everywhere 

 except at the apex, where there is a deep, narrow, funnel-shaped depression. No tentacles, but 

 4 minute, pigmented bulbs. 8 adradial lithocysts, each with a single concretion. 4 narrow 

 radial-canals and a ring-canal. No stomach, the radial-canals either ending blindly at inner 

 apex of bell-cavity or fusing at one point at this place. The gonads are elongate, irregularly 

 arranged, sac-shaped evaginations upon both sides of the middle parts of each radial-canal. 

 The ripe eggs are in the entoderm. The ring-canal, radial-canals, "tentacle-bulbs," and 

 gonads display many dark-brown granules. Hydroid unknown. Found off the English and 

 German Atlantic coasts. August to October. (See text-figure 121.) 



According to Giard, 1898, Campanularia caliculata Hincks is the hydroid of Agastra tuna. 

 Giard states that this hydroid sometimes produces free medusae (Agastra mira), although 

 usually its gonophores are sessile, and that in running water the hydroid produces sterile 

 stolons, which become fertile in still water. 



Genus EUCOPE Gegenbaur, 1856 (sens, emend.). 



Eucope (in part), Gegenbaur, 1856, Zeit. fur wissen. Zool., Bd. 8, p. 241. 



Non Eucope, Agassiz, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 351.— Agassiz, A., 1865, North Amer. Acalepha-, p. 83. 



x.iphenella+ Eucopium + Eucope, Haeckel, 1879, Syst. der Medusen, pp. 168, 169, 170. 



Vhialella, Browne, 1902, Annals and Mag. Nat. Hist., ser. 7, vol. 9, p. 282. 



Eucope, Keferstein und Ehlers, 1861, Zoolog. Beitrag., p. 88.— von Lendeneeld, 1884, Proc. Linnean Soc. New South Wales, 



vol. 9, p. 920. 

 Non Eucope, Agassiz, A., and Woodworth, iSou, Bull. Museum Comp. Zool. at Harvard College, vol. 30, p. 121. 

 Campanulina, Hincks (hydroid), 1868, Hist. British Hydroid Zooph., p. 186. 



