BCHINODERMA. 3 



very considerable difference in size. AH there in but a single specimen, I thought 

 the question whether or no it is hermaphrodite might )>e left over for the present 



The only suggestion that I have to make is that Prof. Ludwig's definition of the 

 genus (<y>. cit., p. 50) should be altered by the omission of the words " Sehr wcnigen," 

 us applied to the dorsal " FUsschen." 



As the type of the genus came from Macquarie Island, the two are not widely 

 separated ; no information is given as to the depth of the more northern species ; the 

 Antarctic form was taken at 20 fms., while at Winter Quarters. 



THYONK sp. 

 A young specimen was taken off Cape Adare. 



MRSOTHURIA MAOKU.ANI. 



Holathuria magtllani, Ludwitr. Bcr. Oberheas. (ten. xxii. (1883), p. !"'. 



Mfsothnria magtllani, Ottcrgrcn, Fintskrift for Lilljeborg (1890), p. 850; Ludwig, Ergebn. Hamburg. 

 Sammelreiae Holothnr. (18U8), p. 8. 



Two much-injured specimens are assigned to this species ; I was unable to find 

 spicules, but I do not always expect to find specimens taken out of ice-cold water and 

 from 100 fms. equal to the Ixjst products of the lalxiratories of Naples or Plymouth. 



Coulman Island, 100 fms. 



B.-ACTINOGONIDIATA . 



IL CRINOIDEA. 

 COMATDLIDAK. 



PROMACHOCRINUS KERGUELENEXSIS. 



(Plate I.) 

 Promaehocnnus kergutlenxi*, P. H. Carpenter, Proc. Roy. Soc. zzviii. (1879), p. 885. 



This is certainly one of the most interesting finds of the ' Discovery,' for the genus 

 was, till the German South Polar Expedition brought l>ack specimens, only known from 

 the collections of the ' Challenger,' which found two species in the Southern Seas, and 

 one a few degrees north of the Equator. The only addition to our knowledge since 

 Dr. Carpenter's report has been the note by Dr. Minckert of Greifswald,* while Dr. 

 Bather has suggested that it may be a " permanent meristic variation."! I give a figure 



Zoo]. Anzeig. xxviii. (1906), p. 400. 

 t TreatUe on Zoology iii. (1900), p. 195. 



