35 



for t"wo-thirds of the width and somewhat flat along the edges. Cells 

 oblong-ovate, the sides usually straight and the ends very obtusely rounded 

 with strongly elevated lines between the rows ; six or seven cells in the 

 length of one line and eight or nine in the same space in width. At their 

 extremities the cells are not in contact, but separated about one-fourth 

 their own length from each other ; the intervening space with two small 

 pits. On each side of the branches there is a row of cells which are 

 larger and more nearly circular than the others. The most complete 

 specimen collected is 13 lines in length and 1^ lines in width. It is twice 

 branched at an angle of about 35*^. 



The most important distinctive character of this species is the pitted 

 structure of the space which intervenes between the ends of the cells. 

 A small portion along the edge is often smooth and the edge itself usually 

 acute. It occurs at East Point, two miles east of Jupiter River, Gamache 

 Bay, and the Jumpers ; Divs. 1, 2, 8, 4, A. G. J. Richardson. 



P. SULCATA, n. sp. — Polyzoary elongate, flattened, sides gently and 

 uniformly convex with moderately sharp edges. Cells broad-ovate or nearly 

 square, about eight in the length of one line and nine or ten in the same space 

 in width, their ends separated by a simple wall only ; a fine someti'mes 

 fiexuous impressed line or minute furrrow runs along the crest of the walls 

 which separate the longitudinal rows. When the specimens are slightly 

 worn this furrow disappears. All the individuals collected are simple and 

 slightly curved, and it seems probable therefore that this is an unbranched 

 species. The largest observed is 2 inches in length and 2 hues in its 

 greatest width at a point where there are 20 longitudinal rows of cells. 

 Another is 18 hnes in length and 2i lines in its greatest width where there 

 are 22 rows of cells. In this latter specimen many of the cells have a 

 small wall-like projection or imperfect septum extending from the side, the 

 end, or one of the angles, obhquely nearly to the centre. Rarely there are 

 two of these septa in a ceU. 



This species in its simple unbranched and curved form closely resembles 

 P. gladiola, but the cells are more nearly square and the branches not 

 angular along the middle. The sulcus between the rows of cells is a char- 

 acter not observed in P. gladiola. The Jumpers ; Div. 4, A. G. J. 

 Richardson. 



P. SUBERBA. — Polyzoary consisting of large fronds, sometimes three or 

 four. inches in length and one or two inches in width. Cells ovate, about 

 eight in the length of one line and ten in the same space in width. In 

 some parts of the frond they are arranged in longitudinal rows, but else- 

 where irregularly disposed. In the rows the cells are not in contact at 

 their extremities but separated by one or two small pits as in P. excellens. 



