ECHINOIDEA. II. 65 



nation (PI. XI. Figs. 20, 34) as well as the miliary spines (PL XI. Figs. 37, 41) and the clavulæ agree 

 with tliose of Jcff'rrysi. 



The tube-feet are small and simple, witliout spicnles, but generalh- with a calcareous cap as 

 in Jcffrcysi. The sphæridiæ placed singly, not presenting pecnliar features. The pedicellariæ are repre- 

 sented by the same three kinds as in Jeffrcysi. The rostrate pedicellariæ (PI. XI. Figs. i, 19, 23) are 

 characteristic, broadly rounded and rather densely serrate at the point, differing distinctly from those 

 of Jcffrcysi. The ophicephalous pedicellariæ are much more alike in the two species, only the terminal 

 portion is perhaps upon the whole a little smaller in P. Wandcli (PI. XI. Figs. 13, 14). The tridentate 

 pedicellariæ (PL XI. Fig. 40) are alike in both sjiecies. 



The internal anatomy agrees with Jcffrcysi, o\\\s the female genital organs are slightly ramose. 

 The genital openings are not \et developed in a specimen of 20""" length, Ijut in a si^ecimen of 21""" 

 they are found; on the other hånd they are not yet fuUy developed in a specimen of 26""". It is thus 

 evident that this species is not mature before it has reached a size of a little over 20""" length. The 

 largest specimens are 53™™. Distinct genital papillæ are found in the grown specimens. 



The colour is dark violet; also the spines may be so coloured (always so in life?). According to 

 a coloured sketch from a living animal (St. 36) the living animal is more claret coloured, or to speak 

 very exactly, intermediate between \-inosus and atro-violaceus , with a tint of atropurpureus» 

 along the abactinal keeL (Saccardo. Chromotoxia. Ed. II. 1894). 



This species was taken b)- the -Ingolf at the following stations: 



St. iS (61- 44' Lat. N. 30° 29' Long. W. 1135 fathoms 3"oC. Bottom temp.) i specimen. 



- ) 19 - 

 - _ ) 8 - 



- ) I - 



- ) 5 - 



- ) I - 



Most of the specimens were broken. — Further a pair of broken specimens were taken by the 

 <;Thor St. 164 (62" 10' Lat. N. 19° 36' Long. W. 1144 fathoms); they are mentioned as Poiirfalesia miranda? 

 in Joh s. Schmidt: Fiskeriundersogelser ved Island og Færoerne i Sommeren 1903. p. 24'. — The 

 species is thus known to occur in the warm area of the Northern Atlantic from South of Iceland to 

 Davis Strait, from S45— 1715 fathoms; probably it will prove to be distributed over a large part of the 

 warm area of the Atlantic. It seems to be a more exclusively deep-sea species than P. Jeffreysi. 



I have named this species in honour of the chief commander of the c Ingolf »-Expedition, Ad- 

 miral Wandel. 



P. Wandcli is, evidently, rather nearh- related to P. Jeffreysi, but is easih' distinguished from 

 the latter species, mainly by the shape of the test, the long, curved and thorn>- abactinal spines and 

 the rostrate pedicellariæ. Its relation to P. miranda A. Ag. is, for the present, not quite clear, because 

 our knowledge of the latter species is rather unsatisfactory. In the Panamic Deep-Sea Echini 

 p. 139 it is stated that the type specimen was only 3-5"'™ in length; nevertheless it was mature, the 

 genital openings being already full\- developed, as sliown in Fig. 9. PL XVII of Rev. of Echini and 



' Skrifter udgivne af Koiniiiissionen for Havundersøgelser. No. i. 1904. Kobenhavn. 



Tlie Ingolf-Expedition. TV. ->. q 



