58 K. MiTsiKiia : sTLDii.s ox 



Diu Kiilkkorpor dor llaufc. . . .bostclieu iu langgezoguuon X-torinigou 

 oder stabt'orinigon (iebildcn mit krausou Atiswiichscn vorzicrt, 

 aul" di'iu Iviickeu 0,05 ^fm. lang, am Bauelu' zuiu Tlicil viol kloiiior. 

 AUo Fiisschou bositzou durehlochorte Kalkschcibcheii, in dorou 

 Nalio audi nooli grosscro spiiiiichc Stabchou liegon. In deu 

 Muskohi and aUon Eingeweiden sind iiborall glatte und diiinio 

 0,048 Mm. lango Kalkstabchen eingcstreut. — Korpor und Tontalcolu 

 einl'aoh choeoladoubrauu. Die Tliieiv, bis 20 Cm. lang, gknchou 

 auch im iunoreu Bau deu Exemplaren von Miill. Agassizii. Der 

 Kalkriug ist stark verdickt, uaeh hiutou eoniseh vorjiiugt ; tyiusch 

 ist das Kadiale vier-, das Interradiale eiuspitzig. CuviEK'sche 

 Orgaue folden. Steincaual eiufach, im Mesenterium festgelegt, das 

 Madreporenkopfehen knopfFormig ; PoLi'sche Blase cinfacli ; Teu- 

 takolanijiullon selu' lang " (Selenka 1 SOT, p. lUiM. 



Jicinarhs : — Coloi' in alcohol dark chestnut, slightly lighter on 

 the ventral surface, lii the fresh state the first specimen was 

 uniformly dark purplish black on the dorsum as well as on the 

 ventrum. Length 27 em. and breadth U cui. Tough to the touch. 

 The coloration is very markedly different from that of M. lecanora ; 

 this is the only fact which is decidedly against the idea advanced 

 by Bkll that this species should be united with M. lecanora. Cal- 

 careous ring agrees well with the description. I'olian vesicle single. 

 The other specimeu shows very uearly the same calcareous bodies. 



Even in the alcoholic sjxK-imens, the three rows of pedicels 

 are distinctly recognizable. Tentacles 2t), large. 



Calcareous deposits iu dorsum : (i) rather long rods with 

 dichotomous ends and with short growths throughout the length, 

 up to 0.008 nun. long (textfig. 12 /') ; and (ii) much rarer rosettes 

 with tendril-like processes (a). In the ventrum, rods are shorter 

 (0.01 mm.) but have lateral growths much closer and longer. 



