NO- 1555 HA WA HA X HO L O TITFRIA NS—FJSHER. 731 



On account of the alisence of deposits in tiie skin it is rather diffi- 

 cult to assign trenchant characters to this species. Consequently a 

 figure of the external appearance is given. The pieces of the cal- 

 careous ring are a trifle variable and the dorsal radial pieces are likel}^ 

 to be a little irregular, as shown in figure. There is constantly but 

 one large Polian vesicle. The shaft of the tentacles is ver}' large and 

 stout in comparison with the small digits which are slightly irregular 

 in length. In life the disparity may not be present. 



The absence of deposits is certainly not due to acid, since a Sig- 

 iiiodota in perfect condition, so far as deposits arc concerned, was 

 taken from the ))ottle in which specimens were kept for over two 

 years. The only known species with which the present form might 

 be confused is Anapta xnhtUix Sluiter from the Bay of Batavia. 

 Inerinis ditt'ers in having 12 to 1(5 instead of 4 or 5 digits to tentacles, 

 and in having a stout calcareous ring instead of a rudimentar}^ one; 

 no papilla? on body in inerinis; one instead of several Polian vesicles. 

 liierniis is also longer in pi-oportion to width than suhtiJix. Snhtilis^ 

 like inermlx^ lacks calcareous deposits. 



Stil^faiiiily CHIKIDOTIlSr^qi; O^^i ei^i^ren. 



C/imdo<;»,r OsTERGREX, Ofv. Ak. Forli., 1S9S, p. 117. 



Genus CHIRIDOTA Eschscholtz. 



CJiiridota. Eschscholtz, Zoologischer Atlas, Pt. 2, 1S29, ]>. 12. Tj^pe, Ch'iridota 

 discolor, Eschscholtz. 



Tentacles 10 to 20, pelt?.*:^, digitate. Deposii.s: (Groups of wheels 

 inclosed within walls of the integument, and, in addition, often more 

 or less curved rods. Wheels with six spokes. Hermaphrodite. 



KEY TO iIAWAII.\N SPECIES OF CHIRIDOTA. 



a. Wheel papilhe numerous, in live longitudinal series on body hawaiiensk. 



aa. Wheel papilla' few (Sto50) in a single dorsal series uniserialis. 



CHIRIDOT.A. HAWAIIENSIS. new species. 

 Plate LXXXI, tig. 5; Plate LXXXII, tigs. 3, -Au-c. 



Near ChirldoUi rig/da Semper. Tentacles 12; digits 8 to 10, the 

 two terminals being conspicuously larger than laterals, which are 

 graduated in size, the smallest ])eing proximad. Ventral interambu- 

 lacra with a single rather irregular series of " wheel papilla%'' at least 

 in proximal half of body; when present beyond middle, very few and 

 scattered. Three dorsal interambulacra with many more numerous 

 wheel papilia3, which are umch more crowded in anterior than poste- 



