89 



fi&g- 4i 5) resembles very much the dendritic tentillum described by Fewkes 82, another (PI. I, 

 figs'- 6, 7) is identical with the Athorybia-ty\i& of tentillum, whilst it seems to us that figg. 8 

 and 9 are different stages of contraction of the Athorydia-type. and figg. 10 and 12 young 

 stages of the same type. But as Bedot says himself, this can only be decided when fresh, 

 livine material is used for investigation. 



As was the case with Chun's material, our three specimens of AnihopJiysa ■forrnosa 

 are very incomplete, as many appendages had become detached and the remaining ones were 

 highlv contracted. 



PI. XVI, fig. 123 gives us a general idea of what has become of the largest of the three 

 specimens. Cat. 23 B. has a diameter of 4 mm. Its pneumatophore with dark-brown pigment- 

 spots, the muscular bands (Fewkes 88 "hood") and one bract showing the characteristic paired 

 lateral dentations made it clear to us that we had found an AntJiopJiysa forviosa. On the stem 

 which at the same time covers up the entire wall of the pneumatosaccus a large quantity of 

 appendages are to be found all representing young stages of gonophores, palpons and tentilla. 

 They are present in such large quantities that it was impossible to describe their exact position. 

 The tentilla are all of the Af/iorydia-ty]i& that is to say, a rudimentary involucrum, one spiral 

 turn of the cnidoband, two lateral filaments and a median lobe. The involucrum shows moreover 

 a spine-like protuberance, resembling that described by Bedot (1904 PI. I, fig. 6, form jS) but 

 somewhat more accentuated. 



The two other specimens are exceedingly small (2^., and 2 mm. in diameter) and are 

 probably young stages. They show a large pneumatophore which, in fact, constitutes the whole 

 body of the specimen and on its outer wall one mature siphon, some muscular bands and many 

 buds of palpons, etc. Bracts there were none; and of tentilla we found form E (fig. 10, PI. I 

 Bedot 1904) and the Athorydia-?,ta.g&. They were both too badly preserved for making sections 

 or even for making a sketch of them. 



Fam. Axgelidae Fewkes 1884. 



= Ordo Auronectae Haeckel 88a and 88b. 

 = Fam. Auroxectidae Chun 97 a. 



In 1884 Fewkes published a short account of a Siphonophore which he considers a very 

 close all\- of the genus Angela, discovered by Rang and published by Lesson (43). He calls 

 it Angelopsis and gives it the specific denomination '^globosa\ 



His description of Angelopsis is short, but sufficiently clear; the sketches are not very 

 satisfactory as Fewkes also acknowledged himself five years later. We reproduce one of Fewkes" 

 sketches of 1889 which in our opinion is of considerable interest (PI. XVIII, fig. 136). 



Angelopsis globosa consists of a spherical float without any apical opening, smooth on 

 the outer surface (diameter 7 — 10 mm.) containing interiorly a second thin-walled .sac, which he 

 supposes to correspond to the pneumatocyst of RJiizophysa. The lower floor of the float is 



SIBOGA-EXPEDITIE IX. 



