NO. 1555. HAWAIIAN HOLOTHVRIANS— FISHER. 653 



left ])raiich in relation with rete mirabile of intestine. Cuvierian 

 oroans large; having- been ejected it is difficult to determine whether 

 they are divided or not. 



The calcareous deposits of the dorsal perisome coniprise small rods 

 with the ends several times dichotomously branched and with branches 

 on either side at about the middle. These rods are about 0.04:1 to 

 0.0-46 mm. long, and form incomplete rosettes. Simpler rods are also 

 present, as well as X-shaped bodies. I lind no unbranched rods such 

 as are present in the ventral perisome. Here the rods are thicker, 

 simpler, and frequently without any branches whatsoever. Some of 

 the commonest forms are ligured. It will be seen f i/om these that 

 occasionally the rods assume the condition of small perforated plates 

 owing to the fact that l)ranches anastomose. I find no rods more com- 

 plicated than those figured. The supporting rods of the dorsal pedicels 

 average about 0.17 nun. in length. They are smooth and branched 

 simply at the ends. Occasionally a rod will attain 0.i^l» mm., and I 

 found one perfectly simple which equaled (».1T nun. The rods of the 

 ventral pedicels are rather smaller, and fewer in numlter. Tow^ard the 

 base of the dorsal pedicels numerous rather simple small rods, inter- 

 mediate between the supports and the ordinary variety of the perisome, 

 are present in considerable numbers. The majority of doi-sal pedicels 

 have a well-developed terminal plate, nearly if not (juite as large as 

 that of the ventral pedicels. 



Although the specimen is large, it appears to answer fairly well the 

 requirements of this species. The deposits of H. vltlensis^ according 

 to Semper's figures, appear to be considerably difl'erent. That is 

 apparenth^ the only other form with which this specimen might be 

 confused. 



*HOLOTHURIA KAPIOLANI/E Bell. 



Holothuria kapiolaniif Bell, Proc. Zool. Soc, June 28, 1887, p. 533. 

 This species is described by Professor Bell, as follows: 



Body elongated, soft to the touch, covered with suckers more numerous below 

 than above, scattered quite irregularly; obscurely marked papilhe around the anus. 

 (Esophageal ring of ordinary type, the pieces simple and low, with a rather deep 

 notch posteriorly; stone-canal not remarkalily long; two Polian vesicles; genital 

 tubes short, not numerous; Cuvierian organs al)sent or poorly developed. The 

 spicules merely in the form of delicate, slightly curved, very spiny rods. 



Color brownish gray, lighter below, with two rows of eight or nine dark patches 

 on either side of the back. Length 60 mm., average width of 10 mm. Sandwich 

 Islands. 



Professor Bell further states that the species ''appears to be most 

 closely allied to II. ermacem., from which, however, the much smaller 

 stone-canal and very difi'erentlj^ formed spicules are sufficient to dis- 

 tino'uish it." 



