84 K. JiiTsuKiia : stidies ox 



gi'oy-bi'owu inkc'tl and mottled in various ways. Tiie Paumotu 

 specimens sliow likewise a mixture of purplish brown and gi'cy- 

 brown areas and patches. The tips of the pedicels have remained 

 straw-yellow, which is no doubt the color in the living animal. 

 In all the specimens the ventrum is somewhat lighter. 



In the accepted descriptions, the ambulacral appendages are 

 put down as papilte all over the body, but in the specimens 

 examined, the ventral appendages have well-developed end-plates 

 and must tlu'refore be called })edicels. Hence they must be 

 described as having dorsal papilla; and ventral pedicels. In this 

 respect, the specimens are like //. bowemis, but they agree in all 

 other details so strongly with //. impaliens that they must be put 

 in the latter species. In fact 1 am led to suspect that //. boicensis 

 is a variety of H. impatiens, the only point of difference being that 

 in the former some of the buttons have knobs on the middle beam. 

 OsTEUGKEN (p. 235) says : " Wenn man kleine Exemplare dicser 

 Art (//. impatiens) untersucht, flndet man die Fiisschen ganz wie bei 

 //. aphancs georduet. Auf der l\iickenseite sind alle papillenformig, 

 wiihrend man auf dem Bauche in den 3 Eadien Doppelreihen 

 von Fiisschen mit typischer Form iindet. Wiihrend des Waclis- 

 thums entstehen dann sowohl auf den Interradien des Bauchcs, 

 als auf dem Piiicken zahlreiche von Warzen getragene Papillen. 

 Audi uuter den radialen Fiisschen auf der Bauchseite wird die 

 llaut war/ig verdickt, weshalb diese Fiisschen irrig als Bapillen 

 aufgefasst worden sind, obgleich sie audi bei Erwadisenen 

 grosse Saugscheiben haben."' 



In the Sakibaru specimen, which is the least contracted of 

 all the specimens in my possession, the appendages can be recog- 

 nized as forming rows on the ambulacra. They are all borne on 

 rounded eminences or warts of more or less iirominence. Those 



