62 NEW YORK STATE MUSEUM 



The similarity in general habit of the arms and in the series of 

 spines, between this genus and the Devonian Eoluidia of Europe 

 is most striking; and we consider it quite probable that the actual 

 structure of Squamaster is more like that of Eoluidia than the 

 somewhat unfavorable preservation of the type specimen would 

 permit to demonstrate. 



Klasmura gen. nov. 

 Etytn. fejids/jLa. fragment, nu$d tail, starfish 



The term Klasmura is here proposed for a group of Auluroids, 

 of the order Streptophiurae, which is represented in our material 

 by two species. These furnish the following diagnosis : 



Description. Disk small. Rays five, long, narrow, tapering very 

 gradually, extremely brittle, actinally flat, abactinally rounded or 

 keeled. Dorsal plates subquadrangular, with a median furrow and 

 distal spout-shaped processes , or ears to which are attached the 

 crossbars of the flat side plates. On the latter ride long 'wedge- 

 shaped or club-shaped hollow spines. 



The ambulacrals, which are opposite, are fused but still plainly 

 showing the median line of fusion. They are boot-shaped, con- 

 sisting of a long central body and a proximal " footlike " process, 

 which extends to the side plates. They are covered by a median 

 row of elliptical ventral plates. 



Rays covered entirely by integument that bears dense masses of 

 small unarticulate 'spines. On the abactinal side the integument is 

 closed ; on the actinal is shown a median series of slits, correspond- 

 ing to the ambulacral furrow. 



Oral frame very heavy, apparently with smaller spoon-shaped 

 or divided ossicles in the. angles between the oral frames and jaws. 



Genotype. K . m i r a b i 1 i s Ruedemann. 



Remarks. The presence of the ventral plates and the union of 

 the ambulacral ossicles to vertebral ossicles, as well as the absence 

 of a well-developed buccal shield brings this genus into the family 

 Eoluidiidae Gregory. This family, which comprises the most 

 advanced of the Devonian Auluroidea, or Stelleroidea in general, 

 is represented by three genera, namely, Eoluidia Stiirtz, Eospondy- 

 lus and Miospondylus Gregory. Of the first two of these, Klasmura 

 is distinguished by the shape of the ambulacral and ventral ossicles, 

 as well as of the lateral shield,. although in general habitus it most 

 resembles Eospondylus (Ophiurella Stiirtz). The form of the 

 boot-shaped vertebral ossicles and of the oval to elliptical ventral 



