82 



Cat. 88 D. (PI. X\', fig. Ill) belongs to the same stage of development. In the third 

 .siphon (in the sketch the second) we saw a young female gonodendron, whilst in the fourth 

 and fifth there were buds, which were not differentiated enough to be called gonostyles. In the 

 table we have used a note of interrogation wherever we could not decide about the absence 

 or presence of any reproductive organs. 



Cat. 88 O., 88 G. and 88 B. still show three siphons with tentilla II. (SS G. has moreover 

 male gonophores). 



In Cat. 21 J /C, /j/ B., 88 C, 88 A. two siphons with tentilla type II are left. Gonodendra 

 appear near the fourth (second in reality) siphon, 88 A. shows already four mature siphons 

 where both tentilla IV and III are represented. 



In Cat. ij:;A., 21 ^F. (PI. XV, fig. iio), 2jL., 21 ^R. there are only two siphons left, 

 the oldest with tentilla II, the youngest with tentilla IV. We suppose that gonostyles are being 

 developed, but not differentiated enough to be seen. 



Cat. j8 C, i^rG., 151 J. consi.st of cormidia with three siphons, the tentilla type II 

 belonging to the oldest. As we found a female gonodendron near the oldest siphon of 1 5 1 G. 

 we suppose there must be one too in 38 C., 215 R., 25 L., 215 F. and 173 A. 



Finally Cat. 33 A. has only one siphon with tentilla IV. It is doubtful whether this 

 specimen belongs to Crystallomia group II, as there are only tentilla t)pe I\ . It may also 

 belong to Crystallomia group I. 



47. Detached cormidia of Cry.'ita/loiuia spec, grouj) II. PI. XV^, fig. 112. 



Stat. 130. Lat. 5°o N., Long. i25°26'.sE. Cat. 227. ale. 90°/^. One specimen. 



Stat. 136. Ternate-anchorage. Cat. 24 E., 24 G., 71 H., 71 J., 176 A., 176G., 215 B., 215 C, 



215 E., 215 G., 215 H., 215 M., 215 N., 215 P., 215 Q. formald. 4°/o. 15 specimens. 

 Stat. 141. Lat. i°o'.4S., Long. i27°25'.3 E. Cat. 44 A., 44 B. formald. a^°l^. 2 specimens. 

 Stat. 148. Lat. o°i7'.6S., Long. i29°i4'.5E. Cat. 145 D. ale. 90°/^. One specimen. 

 Stat. 157. Lat. o°32'.7S., Long. 130° 14.6 E. 4'/, cables N.N.W. of the North-point of Great 



P"am-island (Jef-Fam-Besar). Cat. 38 B. formald. 47o- One specimen. 

 Stat. 186. Lat. 3°io'.5S., Long. i27°2o'.5 E. Cat. 25 D., 25 K., 25 J., 25 O., 25 P., 25 T. 



formald. 4°/o. 6 specimens. 

 Stat. 189'. Lat. 2°22'S., Long. I26°46'E. Cat. 65 A. formald. 4°'^^. One specimen. 

 Stat. 203. Lat. 3°32'.5S., Long. 124° 15'. 5 E. Cat. 173 E. formald. 4°,^. One specimen. 



In the description of Crystallomia spec, group I and Crystallomia spec, group II we 

 formulated the opinion that cormidia might detach themselves after a certain stage of develop- 

 ment. In Crystallomia spec, group I the primary siphon with probably larval tentilla disappears; 

 in the second group we saw how Crystallomia spec, develops four siphons all with another 

 kind of (? larval) tentilla and how one after the other these drop off and are substituted by 

 younger siphons with different, now definite, tentilla. 



We have reason to think this supposition right, as in the Siboga material loose cormidia 

 exactly resembling the siphosome and its appendages o{ Crystallomia spec, group II were found, 

 belonging in many cases to the same station as the complete specimens of this group. Comparing 

 the list of stations given above of these detached cormidia with the same in Crystallomia 

 group II, we find that stat. 136, 157, 186 and 203 occur in both. 



