.U'TINorOlHjrs HOLOTHIIUOIDEA. CD 



Description : — Teutiiclcs 20, small. I.('ui,41i ut" liudy in lifo ca. 

 30 cm. ; iu alcoliol quite 1<S cm. ( 'olor markings very cliaractcristic : 

 dorsum and veutnim very diflerently colored. The L^M'Oiind color 

 of the former, yellow lo browji ; on this, two hi'oail dark-hrown 

 transverse bands cross the whole breadth of the dorsum. <Jne of 

 these is at about ^ — \ of the body length from the anterior end, 

 and is over 2 cm. in breadth ; the other is at about the same 

 distance from the posterior end and is of about the same l)readth. 

 Sometimes the band ma.y not entirely cross the whole width of 

 the body. The ventrum is lighter than the dorsum, and varies 

 from a uniform brown to almost a white. 



Ambulacral apjtendages very numerous, uniformly distributed 

 in the ambulacra as well as the interambulaci-a without any 

 regular arrangement, on both tlie dorsum and the ventrum. 

 Dorsal appendages have en<l-plates almost as well develoj)ed as 

 those of the ventrum. Hence all must be considered as pt'dicels. 

 Except near the anterior and posterior ends I can not detect a 

 single papilla. In Ufe, however, the dorsal pedicels may a})pear like 

 }>apillae ; for iu my notes on the living animal. I put down 

 '•Dorsal surface i)apillae only. Small eud-plates :'"' Thei'e are no 

 large supporting roils, but there are delicate .\-shai)ed spicules, 

 which are somewhat larger than the calcai'cous bodii'S in the 

 body wall. Some of these have long branches a( both ends; 

 others are more rt)d-like wilh the ends slightly bifurcated. There 

 are all intermediate stages between these. 



Calcareous deposits are very much as in //. marinmuitn. In 

 the dorsal perisome, they consist almost entirely of drlieafe 

 rosettes of -JO— 25^ (texttig. 1.") //). They start with the .\-shape, 

 but the branches at the ends divide diehotomously 2 1 times 

 and the whole looks like a delicate liligree-work. In the 



