298 ART. 7. — T. T.TIMA I TTEXACTTNELLTDA, TV. 



snmll ; those on the gastr;il Rurface freely open. Both diaetinic 

 and pentactinic prostalia present over the entire 1>o(ly ; the latter 

 are small with granular- siirfaeed paratangentials a1)out 2. '2 mm. long. 

 Principal parench3mialia, fine (less tlian 41 !>■ in hreadth). Der- 

 malia, rough pentactins; exceptionally diaetins. Gastralia, similar 

 hnt smaller hexactins, with rays of 80-100 !>■ length. Oxyhexaster, 

 100-120 !>- dia.; both hemihexactinose and hexactinose forms 

 numerous. Discoctaster, 228-820 !'■ dia. ^Nlicrodiscohexaster, 

 20 // (lia. 



,S*. lulntlosHs T.T.— Similar to ,S'. (loivViiu/i in general char- 

 acters and in spienlaiion. ]]ody, tubular. Gastral surface with 

 freely open canalar apertures ; hairy on aeeonnt of the project- 

 ing ends of fine parenehymalia. Paratangentials of pentaetinie 

 prostalia, generally under 2 nun. in length ; rarely 4 mm.; 

 acquiring a rough surface due to nearly vertical, fine and sharply 

 pointed microspines. Principal parenehymalia may l)e 12 mm. 

 long and 130// l)road. Dermalia, rough pentactins but frequently 

 stauractins and rarely hexactins. Gastralia, similar hexactins, with 

 rays 130-200 /< in length. Oxyhexaster, 7')-115 !'■ dia.; very 

 rarely hexactinose. Discoctastei-, 130-213 !>■ dia. IMicrodiscohex- 

 aster, 19 ;'- dia. 



,V. ((jpitis Tj. — Similar to S. (Joinliiu/i in general characters 

 and ill spiculation. Body, tuludar or vase-like, ('analar apertures 

 on the gastral surface, some freely oi)en while others are covered 

 with a small-meshed endosomal lattice, developed in irregular 

 patches and in which the gastralia do not form a continuous 

 lacework. Pentactinic prostalia, large ; with smooth or granular 

 paratangentials o-12 mm. in length. Principal parenehymalia, 



