"edo-es (F, F'). The apical or superior face of the hexagonal prism is not a simple face but 

 "divided by a proximal transverse frontal crest into two unequal apical facets, a dorsal and a 

 "ventral. The dorsal apical facet (D) is far larger and covers the apex of the nectosac; it is 

 "hexagonal with two odd and four paired edges, the odd dorsal and ventral edges are parallel 

 "and of equal length; they are longer than the two ventral lateral and smaller than the two 

 "dorsal lateral, deeply emarginated edges. The ventral apical facet (CI) is quadrangular, much 

 "smaller and covers the top of the somatocyst. Its two lateral edges are twice as long as the 

 "inferior and superior edge and are so deeply emarginated that the facet appears to be nearly 

 "bisected by a frontal constriction. The basal face of the hexagonal prism is also divided by a 

 "prominent transverse frontal crest into two unequal basal facets, a dorsal and a ventral. The 

 "dorsal basal facet (A) is square, and contains the opening of the nectosac, the ventral basal 

 "facet (B) containts the opening of the hydroecium and is isosceles triangular; the apex of the 

 "triangle is directed ventrally and meets with the apex of the triangular ventral face" '). 



Haeckel speaks about the deep emargination and the approximate bisection shows that 

 he does not really hnd the division into two as we will see in Abyla Hacckeli. 



Amphiroa alata. PI. IV, figg. 37^, 37^, 38. 



Haeckel 88b proposes to call the eudoxids of Abyla trigona described bj- Gegenbacr 

 for atlantic specimens Amphiroa trig07ia, because the original type described by Lesuelr 27 

 was found also in the atlantic ocean. The etidoxids of Huxley's specimens, captured in the 

 Tropical Pacific and the Indian ocean, should be called AmpJiiroa alata-. they are as Haeckel 

 supposes, the etidoxids of Abyla alata Hkl., the name he proposed for Huxley's specimens, 

 which he thinks different from Abyla trigona O. et G. But now Haeckel forgets that Gegenbaur 

 found some specimens not only in the atlantic ocean but also "an der Guineakliste und in den 

 "westindischen Gewassern (60 p. 339)". 



Chun seems to' have overlooked the identity between the Eudoxia trigonac of Gegenbaur, 

 and the eudoxids described by Huxley. He hopes that further investigations will bring some 

 light (97 a p. 32). We have looked in vain for any differences with atlantic specimens. But 

 preserved material is never perfect and as the incompleteness was very great as far as the 

 gonocalyces are concerned, we can give no more elaborate description, but a few sketches may 

 perhaps .suffice (PI. IV, figg. I'a, 37^, 38). 



18. Abyla Haeckeli nov. spec. PI. V, figg. 39, 40, 41. 



= Abyla trigona Huxl. 59. 

 = Abyla alata Hkl. 88. 



Stat. 106. Anchorage off Kapul-island, Sulu-archipelago. Cat. 91 P. formald. 47o- - superior 



nectophores. 

 Stat. 203. Lat. 3°32'.5 S., Long. 124° 15.5 E. Cat. 126 F. ale. 9o7o- 0"^ superior nectophore. 

 Stat. 2i5\We.st 1000 M. distant from North-point of Kabia-island reef. Cat. 128 C. ale. 9o7o- 



one superior nectophore. 



l) It shoukl be boine in mind that Haf.i:ki;i. in this case (p. 15) applies the name "face" to what is in reality a cavity. 



