CO PENNATULIDA. 



provided with spicules along the aboral side of the stem. The polyps contain well-developed sexual 

 products (eggs). The polyps are arranged in two alternating rows each corresponding to one edge 

 of the quadrangular calcareous a.xis ; between the developed polyps smaller ones are found, and between 

 these again numerous small ones more or less in the zooid stage; in the very smallest, however, ten- 

 tacles may be traced as small papillae, and their cal\xes are provided with 8 points; true zooids 

 that remain as such, are not found. In all these features this specimen agrees with the -genus* Lcp- 

 toptilum of Kolliker. At station i8, south west of Iceland, about midway between Greenland and Ice- 

 land, the Ingolfs has obtained one more specimen, also a Lcptoptilum-%1^%&, but only about 70™'" 

 long. Unfortunately, it is little but a naked calcareous axis, the soft parts having been scraped 

 away except in a few places where some polyps are saved. They show the differences in size 

 characteristic for these young stages; although they are only badly preserved the determination is 

 quite certain; moreover, the axis is quadrangular. A very young and slender Leptoptihi»i stage, 28'"" 

 long (the top, however, is broken off, and the specimen is upon the whole very badly preserved) has 

 been taken by the steamer :Thor» in 1903, near the Vestman Islands (St. 167). It has been shown 

 bv Grieg that LcptopHlnvi is only a young stage of F/iiiicii/iiia^ and further that Lcptoptihiin gracile 

 — the Norwegian specimen (var. iiorvcgic/iiii Kor. & Dan.) as well as the pieces of the many specimens 

 of the Challenger Expedition (from the seas near New Zealand) which have been given to the Bergen 

 Museum — belongs to the species F. quadrangularis (Berg. Mus. Aarb. 1896, Nr. 9). 



The genus Leptoptiluiii must accordingly be rejected, which assuredly, must also be the case 

 with regard to the genus Trichoptiluni of Kolliker. It has been established on a single specimen — 

 Tr.brunncum — obtained between Cerani and New Guinea; in all essential features, also, as mentioned 

 above, in outward appearance and very nearly in size'), it agrees exactly with the first named specimen 

 of Funiculina of the «Ingolf . One difference, however, still remains: Triclioptiliim brunnaiiii is 

 provided with zooids, without spicules, which do not look like future polyps. As, however, the 

 specimen is somewhat damaged, their different appearance may possibly be due to maceration or the 

 like, or the question may be of a separate species of Fnuicii/iJ/a. But I am quite convinced that the 

 genus» Trichoptilum is a young form of some Fmiicnlii/a or other. The same conviction has 

 already been expressed by Verrill (Am. J. Sc. (3) vol.23, P-3i2, note), and he proposes the name of 

 Funicul. bnmnea^) for the species of Kolliker. The fact is that Verrill has observed its similarity to 

 \-oung stages of his Funic, armata. 



As to this species of Verrill, which is described in Am. J. Sc. (3) vol. 17, p. 240, and later 

 ibid, vol.23, p. 312 and Bull. Mu.s. Comp. Zool. vol. 11, p. 6, PI. I, fig. 4, it must, so far as I can 

 see, be regarded as identical with F. quadrangularis., since in the description I can indicate no 

 feature really separating these two species. The strong spiculation, which has evidently given rise 

 to the specific name armata, may very well be found in F. quadrangularis, which is very variable 



') Kolliker ^ivcs 34-3""" '. but the figure, which is said to be natural size, measures ca. 30omni; after having seen 

 the type-specinieu in Brit. Museum I am able to decide that the mm. of tlie text must be a misprint for cm. 



^) The opinion ofVerriU is followed b)' Roule (Camp, du ^Caudans. p. 307); but when he thinks his ^^Trichoptilum sp^. 

 to be either a young Anthoptitum or a young Funiculina, he seems less clear about the matter {Anthoptilum, as is well 

 known, ha\'ing no calyx and no spicules, apart from the microscopic smaU spicules of the peduncle, etc.); the question can 

 only be of Funicul. quadrangularis, which was before known from the coast off .\rcachon. 



