I/O 



ECHINOIDEA. I. 



Hamann has overlooked, though be repeatedly quotes the paper by Foettinger. The nanie of 

 «Globiferæ» must then be rejected for these pedicellariæ in the Diadr)iiatid(r on account of priority as 

 well as morphology. In SpliærecJiiiiiis the case is quite different; here they are evidently (rudimentar)) 

 globiferous pedicellariæ; the name of «claviform pedicellariæ cannot be applied to them. 



Dorocidaris papillata. The arrangement of the tubercles in the ambulacral areas described p. 32 

 (PI. IV. Fig. 8) is no constant feature. In some specimens from the Shetland Islands brought home by 

 Cand. mag. A. S. Jensen, the secondarj- tubercles are sometimes placed opposite to those in the primary 

 series, sometimes alternating with these (as in Cidaris a(fiiiis\ sometimes there is a tubercle both oppo- 

 site to the primary one and one down in the inner corner of the ambulacral plate. 



Kg- 7- 



Fig. 8. 



Fig. 9. 



Fig. 7. Valve of a large globiferous pedicellaria of Stereocidaris Loiioii. Obj. A.A.. Oc. III. (Zeiss). 



— 8. — - small — — - Stereocidaris Lorioli. Obj. AA. Oc. III. (Zeiss). 



— 9- — - large — — - Dorocidaris nuda. Obj. .\A. Oc. III. (Zeiss). 



With regard to the hitherto uncontrolled statements of the occurrence of D. papillata (p. 35) I 

 am now able to give the following informations: the specimen from St. Pauls Rock (Challenger) is a 

 D. papillata. This locality is the southernmost one, from which the .species is known,^ — the specimens 

 (2) from the still more southern locality, (Challenger-) st. 320 (off the mouth of the River Plate) being 

 no D. papillata^ but a .species hitherto not described. The spines resemble those of D. papillata, have 

 a slightly reddish, rather long neck; there are about 18 longitudinal ribs, serrate as in C. a/Jinis; 

 between the ribs sHghtly branched «hairs» are found, so that a transverse section of the spines gives 

 a quite similar figure as in D. papillata. In the smaller specimen the spines are a little more thorny. 

 No ampullæ on the secondary spines. The large globiferous pedicellariæ (Fig. 7) without end tooth, 

 the blade a little prolonged. The mouth is long and narrow, surrounded by rather strong teeth. They 

 are rather varying in size, the figured one is among the smaller. In the larger ones the lateral 



