96 
BULLETIN OF THE LABORATORIES 
1 6a. A specimen doubtfully referred to this species, natural size, with 
a small portion of its surface x i8, showing the openings of 
one or more series of small pores between the zooecia aper- 
tures. Coll, of Prof. C. L. H. 
Fig. 17. Rhombopora confluens, Ulrich p. 91. 
17. A specimen of the natural size with a portion of its surface x 18, 
The small granulations shown near tbe bottom of the figure are 
seen on another specimen. Coll, of Prof. C. L. H. 
Fig. 18 and 19. Streblotrypa (? Leioclema) denticulata, n. sp.. p. 88. 
18. An unbranched fragment, natural size, with the surface x 18. 
The latter shows the denticulate apertures and striated inter- 
spaces characterizing the species 
19. A branched specimen having the surface somewhat abraded, 
which is referred to the species. Natural size. Coll, of E. O.U. 
Fig 20. Cystodictya angusta, n. sp. p. 82. 
20. Fragment natural size and a portion of the surface x 18, show- 
ing two rows of zooecia, irregular striations and fine granules. 
Also a transverse section x 6. Coll, of Prof. C. L. H* 
