ulrich-bassler] revision of paleozoic bryozoa 283 



arranged and somewhat radially disposed series of sharply defined 

 internodes or vesicles. The latter vary greatly in size, both as to 

 width and length, and also in form. Only the larger series project 

 beyond the central or denser part of the colony. 



Occurrence. — The typical form is from the horizon of Schizophoria 

 striatiila in the Devonian, on Hay river, Canada, 40 miles above its 

 mouth. Variety aggregatum is from the Hamilton formation, in 

 Genesee county. New York. 



Cat. No. 43,131, U. S. N. M. 



ALLONEMA WALDRONENSE new species 



(Plate LXVII, 5) 



Colonies small, consisting of an irregular, winding series of com- 

 paratively few and rather large, inflated internodes. The series 

 branches occasionally, and a few of the internodes appear to be quite 

 isolated. The internodes vary greatly in form, some being globular 

 or elliptical, others pyriform, and a few of the largest bilobate. The 

 last probably consist of two partially confluent vesicles. With all 

 this variation, the internodes still remain within reasonable distance 

 of the average size that we consider characteristic of the species. 

 The average length may be placed at about 0.5 mm., the width at 

 0.3 mm. 



So far as the size of the internodes is concerned, they are no larger 

 than in A. moniliforuic (Whiteaves) and only a little larger than in 

 A. hotelloides, but their bulbous and irregular shapes and the narrow 

 necks connecting them cause them to look very different. The true 

 affinities of A. zualdronensc doubtless lie with A. fusiforine (Nichol- 

 son and Etheridge, Jr.) and our A. subfiisifornie. It is, however, 

 readily distinguished from both by its smaller internodes. 



Occurrence. — Waldron shales of the Niagaran group, Waldron, 

 Indiana. 



Cat. No. 43,128, U. S. N. M. 



ALLONEMA SUBFUSIFORME new species 



(Plate LXVII, 6, 7) 

 Colonies small, of few large internodes, the series branching irreg- 

 ularly. Internodes normally bottle-shaped, with a narrow connecting 

 neck, varying greatly in size, the largest i.o mm. in length and 0.6 

 mm. in width, the smallest only about 0.4 mm. long by 0.22 mm. 

 wide. The largest internodes usually at the distal extremities of the 

 branches, the smallest at the proximal ends. Average size of inter- 

 nodes about 0.7 mm. in length and 0.4 mm. in width. 



