ART. 12 



HEXACTINELLID SPONGES OKADA 



17 



Specimen A is a complete, medium-sized, and well-preserved speci- 

 men, 71 mm high, and, exclusive of the basal tuft, 25 mm long. The 

 broadest part of the body measures 16 mm. The distinct, beveled 

 longitudinal edges, which form a regular hexagonal-shaped sponge 

 body, are four in number. Specimen B shows a nearly complete 

 body and appears to be the youngest specimen of all. It was super- 

 ficially injured and considerably macerated on the dermal network, 

 only the parenchymal supporting-skeleton and here and there small 

 parts of the dermal membrane being preserved. Specimen C is a 

 fragment of the superior regions of the sponge body. 



Table 5. — Measurements of 8 specimens of Semperella schulzei 



A beautiful specimen (D), 109 mm in length and 11 mm to 27 mm 

 in thickness, was taken near the Goto Islands at Station 4903. An- 

 other (E) has been well preserved and remains almo.st uninjured. 

 The club-shaped body measures 74 mm in length, exclusive of the 

 basal tuft. Inferiorly it has a cylindrical form, gradually widening 

 upward and forming an irregular pentagonal prism with conically 

 pointed ends. At its broadest part the body measures 27 mm and 

 the lateral wall between the two projecting longitudinal ridges 10 to 

 12 mm. These ridges somewhat anastomose by means of cross 

 processes. 



Specimens F and G are two similarly shaped large fragments of 

 the superior regions of the sponge body but of much larger speci- 

 mens. Their breadth is 35 mm to 39 mm at the broadest part. 

 Among the other specimens from Station 4934 there was a nuich 

 larger fragment (H), which agrees in many points with the present 

 118040—32 2 



