I.i iii\i S WALLISI. 



Echinus norvegicus Duj 



Off Newport, in Lat. 39° to 11 N. V.i\ common in L242 fathoms. 

 t of Stations, Bee BnlL M. C. /... VIII., do. 2, p. 77, 1880. 



li seems almosl hopeless to attempt to distinguish the species of Echinus 

 known as /.'. elegans, E. norvegicus, E. melo, and /.'. Flemingii. While the 

 mens from the same localities usually vary bul little, those of adjoining or 

 distani localities vary to snrh an extent that they general!} combine more or 

 less the specific features by which we haw become accustomed to separate 

 the above-named species. 



A.large series of E.norvegicus From L242 fathoms shows but the slightest 

 possible variation anion- the differenl individuals; yel the} all have the anal 

 system which thus far has hern considered characteristic of E. elegans. 



The largesl specimens 1 have seen of this species we re collected by 

 the "Porcupine," hut 'hey differ in no marked way from the typical /.'. 

 norveg 



"Echinus Wallisi A \a. 



Echinus Wallisi A. Ag. Bull. M. C. '/... VIII . No. 2, p. 77. L880. 



Atlantic Coast of U. S., Lat. 31°-4] N., Long. 65°-74 W. 257-1047 fathoms. 



This species is evidently closely allied to, if not identical with, Echinus 

 Alexandri, subsequently described (1882) by Danielssen and Koren. They 

 have given a verj characteristic and excellent figure of this species in 

 Plates HI. and IV.. Figs. 7-16, of Nyt. Mag. for Naturvid., XXXVII For 

 their description, see page 294 of the same article. E. Alexandri was dredged 

 from a de,»th of 536 fathoms, hat. 69° 18' X.. Long. 1 I 32'.7 E. 



Th's is a large species allied to //. Flemingii and /.'. elegans. The (est is 

 somewhat depressed. It is readily distinguished by the close secondary 

 tuberculation surrounding tic primary tubercles, and by the arrangement 

 „f the pairs of pores in set- of two. The primary Bpines are Ion-- and 

 sharp, like those of /■/. Flemingii. The anal system is intermediate in Bize 

 between that of /•/. Flemingu and that of /.'. elegans. When alive it was of a 

 brilliant dark reddish pink color, the test of a darker shade than the spines; 



these are darkest at the has.' and pinkish at the tip. The smallest specimen 

 collected measured ahout half an inch in diameter. \ line large Bpecimen 

 of this species, measuring three and a half inches in diameter, was collected. 

 It has also hen found off Newport by the 1'. S. Fish Commission. 



