206 ANNALS NEW YORK ACADEMY OF SCIENCES 



dense bodies baving. bowevev, a tubular axis, in the thickened mature portion 

 tbey are much larger and more nebulous, apparently composed of many little 

 fibers. Rows of large ones range down the middle of the thickened walls, and 

 smaller ones occur more marginally. A little deeper, the walls appear to be 

 thin, the zocecia larger, and angular, more or less numerous, mesopores appear, 

 while the aeantbopores are less numei'ous and smaller. In some tangential 

 .sections, instead of distinct aeantbopores of two sizes, the wall appears to be 

 intersected by nimierous small uniform granules or fibers. In sections cutting 

 the walls longitudinally, the tubular axes of the aeantbopores can be seen 

 passing completely throiigh the thickened walls, which are. in addition, more 

 or less speckled with the granules mentioned in the description of the tan- 

 gential appearance. 



Syringcclemis gen. no v. 



Zoarium consisting of hollow cylindrical branches lined with an epitheca 

 (?). Zocecial apertures somewhat elongated, irregular, ovate or subpetaloid. 

 Mesopores abundant, subangular. Aeantbopores scantily developed, of two 

 sizes in the typical species, the larger very rare, the smaller much more abun- 

 dant but reduced to mere granules. Mature region narrow. Walls thin 

 below, much thickened in the cortical zone to which the mesopores are con- 

 fined. Diaphragms apparently lacking. 



Type. — Syringoclcm is J)isc7-ialis. 



The affinities of this form are somewhat doubtful. In some respects, 

 it is suggestive of the Ehabdomesidas or Cycloporidae. It is provisionally 

 placed with the Batostomellidfe, although the thin layers of which the 

 zoarium is composed, together to some extent with its growth as hollow 

 branches, joined with the character of the zocecia with their raised peri- 

 stomes, are not characteristic of that group. Syringoclemis differs from 

 typical Lioclema in several particular's, especially in its mode of growth, 

 since none of the species referred to that genus form hollow branches. 

 The narrow mature zone, the absence of diaphragms, the obsolescence of 

 aeantbopores and the open mesopores are all characters which are alien 

 to typical Lioclema. The mode of growth is, of course, like that of 

 Anisotrypa, but the other characters are different. 



In a general way, this is similar to the form which I have called Callo- 

 rladia, but that type possesses hemisepta, has a vestibulum, etc.. and 

 probably belongs to an altogether different group. In some respects, it 

 resembles DyscriteUa. It differs markedly in the mode of growth, the 

 shortness of the zocecial tubes, their elevated peristomes and the great 

 abundance of mesopores. 



Syringoclemis biserialis sp. nov. 



Zoarium consisting of hollow, dichotomous branches having a diameter of 

 5 mm. or less. The zoarium itself is less than 1 mm. in thickness and lined 

 with an epitheca. Apertures with a slightly projecting peristome and an 



