ECHINOIDEA. II. 



65 



nation (I'l. XI. Fit's. 20, 34) as well as the miliary .spines (PI. XI. I-'ig-s. 37, 41) and the clavnla; agree 

 with those of Jrfrrysi. 



The tube-feet are small and simple, without spicules, but general!}' with a calcareous cap as 

 in Jcffrrysi. The sphseridije placed singl\', not presenting ])eculiar features. The pedicellaria; are repre- 

 sented by the same three kinds as in Jeffreys!. The rostrate pedicellarise |P1. XI. Fig.s. i, 19, 23) are 

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

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

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

 pedicellarise (PI. XI. Fig. 40) are alike in both species. 



The internal anatomy agrees with Jrff'reysi, only the female genital organs are slightl}- ramose. 

 The genital openings are not \et developed in a specimen of 20™'" length, but in a specimen of 21""" 

 they are found; on the other hand they are not >et full}- 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 papilke are found iji the grown specimens. 



The colour is dark violet; also the spines ma\- be so coloured (alwa>ssoin life?l. According to 

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

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

 along the abactinal keel. (Saccardo. Chronioto.xia. Ed. II. 1894). 



This species was taken by the Ingolf at the following stations: 



St. 18 (61'^ 44' Lat. N. 30° 29' Long. W. 1135 fathoms 3^0 C. Bottom temp.) i specimen. 



— — , I _ 

 _ ) 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 Po?irfalrsia miranda/ 

 in Jobs. Schmidt: Fiskeriundersogelser ved Island og Fairoerne i Sonnneren 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 845—1715 fathoms; probably it will prove to be distributed over a large part of the 

 warm area of the x\tlantic. It seems to be a more e.xclusi\'ely deep-sea species than P. Jeffreysi. 



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

 miral Wan del. 



P. Waiidrli \s,^ evidenth', rather nearl}' related to P. Jeffreysi, but is easih- distingui.shed from 

 the latter species, mainlv b\' the shape of the test, the long, curved and thorn>- abactinal spines and 

 the rostrate pedicellarise. Its relation to P. iniraiida 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 fully developed, as shown in Fig. 9. PI. XVII of Rev. of Echini and 



I Skrifter udgivne af Kominissionen for HavundersogeLser. No. I. 1904. Kobenhavii. 

 The Injjolf-Kxpedition. IV. 2. Q 



