STAUROCALYPTUS GL AB ER. 207 



STAUROCALYPTUS GLABER Ij. 



PI. XV. 



Sfriurocali/pli/s (jhtha-. Tjima, '97, p. ö7. 



This species seems to be not altogether uncommon in tlie 

 Sagami Sea. More than a dozen specimens, representing varions 

 stages of growth, have been examined by me. The exact localities 

 they came from are : jMaye-no-Yodomi, in depth between 501 and 

 572 m. ( = 274 and 317 fms.) ; Inside Okinose by the Sengenzuka- 

 line, about 500m. ( = 274 fms.); Outside Okinose by the Iwado-line, 

 about 480m. ( = 262 fms.); Homba, between 501 and 572m. 

 ( = 274 and 317 fms.) ; etc. 



In some specimens the sample of the bottom attached to the 

 base is of a tufaccous nature, but the majority are attached to 

 dead remains of other Hexactinellids, such as PeripJiragella elisa\ 

 Clionelasma calyx, Hexactinella lorica, Farrea sp. and Hijalonema 

 sp. On that most remarkable Chonelasma calyx which I have 

 mentioned on p. 25 and figured on p. 31 of my Contiib. I., a 

 small specimen of the present species was found in association 

 with Chaunoplectella cavernosa and Ilhahdocalyptus capillatus. 



To mention some of tlie representative specimens in particular. 

 The largest specimen I have seen was of a laterally compressed, 

 vase-like shape, measnring 250 mm. in height, OG mm. by 95 mm. 

 broad; at about tlie middk^ and 17 mm. in thickness of wall in 

 the same part. The specimen was in a l)ad state of preservation. 



In Pi. XV., figs. 1 and 2, are shown in half natural size 



