OO-d 



PROCEEDINGS OF THE ACADEMY OF 



[1880. 



tious and degree of distinctness. Individual specimens presented 

 the followinsi; measurements.^ 



a. Specimens of equal length and breadth, oi- of gr^eater breadth 



than length. 



1. Length 0.066, breadth 0.066, b'th of mouth or neck 0.018, 1'th of neck 0.006, 



b.. Specimens slightly longer than broad. 



21. Length 0.072, breadth 0.066, b'th of mouth or neck 0.018, 1'th of neck 0.006. 

 22,23." 0.084, " 0.078, " " " 0.018, " 0.006. 



24. " 0.09, " 0.081, " " " 0.018, " 0.006. 



25. '« 0.09, " 0.078, " " " 0.024, " 0.U06. 



In many the sarcode was contracted into a ball, encysted, and 

 the mouth of the shell closed with an opercle. Sarcode colorless, 

 but sometimes mingled with yellow and brown food balls ; some 

 oleaginous in appearance. Mostly, a pore was readily distinguish- 

 able on each side of the body of the shell, about one-third the 

 distance of the length above the mouth ; and the wall of the shell 

 was observed to be sensibly thickened approaching the pore. The 

 shell was usually minutely and more or less distinctly cancellated, 

 the cancelli being circular, sometimes nearl^^ uniform, at others 

 greatly differing in size. Occasionally the cancellated condition 

 was so indistinct that the shell appeared fainth' granular and even 

 nearly structureless. 



1 The measurements are given in divisions of the millepietre. As nearly 

 ;ill the Ilbizopods indicated are compressed forms, the measurements are 

 given from their most convenient position as usually seen, that is to say, iu 

 the greater breadth. 



