84 T. Gisl£n, 



j!;((rea-cirri). Nevertheless certain differences might be given which 

 speak in favour of the preservation of the species alhopnrimrea. C. 

 manca in the above-described specimen has 25 cirrals at a cirrus- 

 length of 11 mm; the cirrals are shorter than long: C. alhopurpurfct 

 does not have the same number of cirrals until a cirrus-length of 15 

 mm.: the proximal cirrals are longer than broad. Both the species 

 during their evolution show a tendency towards short cirrals. but reach 

 this stage at different cirrus-lengths. The characteristic dorsal spine 

 of G- alhoj)urpurea (and gracillfi) is, in a somewhat similar form, to be 

 found in the above-described young stage, referred with some doubt 

 to C. disciformis. 



As to the young stages it may be noted that young forms of 

 0. albopiijyiirea have more than X arms already at an arm-length of 

 about 15 mm., when the brachials are still very juvenile, long, and 

 strongly hour-glass-shaped. The young of C. dificiformis even at an 

 arm-lentvth of 25 mm. has X arms and rathei- smooth brachials. 



Cyllometra pulchella ii. sp. 



Fig. I;5;i--14(>. Photo !». 



Fi'din St. ») (7|. 12 (1), 13 (33), Ki (2|, 17 (3) = 46 specimens. 



v/ Sp. 1 (St. 13) ("d thickly discoidal. the h'ee, flat, dorsal surface 

 1,5 mm. C. XXIV 25 — 29; 10 — 12 mm. in two whorls, l""' — 3'' segment 

 shorter than broad, 4"' about cubical, 5"' somewhat longer, the fol- 

 lowing ones L about P 3 br. Antepenultimate segment a little longer 

 than broad. Fi'om about the 7"" segment a slight dorsal transverse 

 carination, at the 12"' or 14"' segment a little thickened on both sides 

 of the median line, appearing there as two inconspicuous tubercles 

 (visible only by high magnification): from the 15"' or 20"' segment a 

 single swelling which disappears again on the outermost cirrals. Penul- 

 timate segment about as long as broad, with an opposing spine, h = 

 Vs^ — V/j of the bi' of the segment.. Terminal claw pointed, curved, 1 ' 2 

 times as long as the jireceding segment. 



\{ — s very nai'row bands, laterally united in the proximal half. 

 1 Hr — s I laterally free, h -= ' :i — ' 4 X in-, i Brax pentagonal, h ^3 

 br, forms vid I Br 1 a small synaithrial |»i-ominence with an indis- 



