BATOSTOMELLID^E. 35 
LlOCLEMA RAMULOSUM n. Sp. 
PI. XI, figs. 11-13; PI. XXV, figs, 9, 10. 
Probably Callopora n. s. Hall, Nat. Hist. New York, Pal. II, 1852, pi. 40, figs. 6 a, b. 
This neat form is easily distinguished from the associated species of Lioclema by its ramose 
habit of growth and few but large acanthopores. The branches are cylindrical, 2 to 3 mm. 
in diameter, and divide at intervals of about 10 mm. Surface smooth. Zocecia thin-walled, 
elongate polygonal or rounded, averaging 0.20 mm. in length, 0. 12 mm. in width, and meas- 
uring lengthwise 7 in 2 mm.; isolated from each other by one or two rows of open, angular 
mesopores. Acanthopores few, but quite conspicuous, about 1 to each zocecium and 
arranged with a certain amount of regularity among the mesopores. Zocecial tubes thin 
walled and somewhat flexuous in the axial region, but becoming thickened in the peripheral 
region. Diaphragms wanting in both regions of the zooecia and seldom if ever developed in 
the mesopores. 
To the unaided eye this species is identical with the associated Batostomella granulifera 
(Hall), but with a hand lens the two are easily separated; L. ramulosum by the open meso- 
pores and few large acanthopores, and B. granulifera by its very numerous acanthopores and 
closed mesopores. Internalfy the two are also quite different. 
Occurrence. — Not uncommon in the Rochester shale at Lockport, N. Y., and Grimsby, 
Ontario. Rare in the Osgood beds near Waldron, Ind. 
Catalogue numbers, 35508, 44125, U. S. National Museum. 
LlOCLEMA GLOBULARE n. sp. 
PI. XXV II, figs. IS, 19. 
Zoarium a rounded mass about 10 mm. in diameter. Zooecia polygonal, almost circular 
when the mesopores are more numerous than usual, larger than associated species of Lioclt ma, 
5 occurring in 2 mm., and the average diameter being 0.30 mm. Mesopores small but some- 
times numerous enough to isolate the zocecia. Acanthopores few and inconspicuous, rarely 
seen at the surface, and determined with certainty only in thin sections. Diaphragms want- 
ing in the zocecial tubes and developed at irregular intervals in the mesopores. 
Although the large zocecia, few acanthopores, and globular method of growth will serve 
to distinguish this from the associated species of Lioclema, still care must be exercised to 
separate it from Diplotnjpa walkeri. In growth, size of zocecia, and number of mesopores, 
as well as other external features, the latter species is precisely the same, but thin sections 
show the different generic relations. In D. walkeri, however, the mesopores have straight 
walls and are crossed by closely set, regularly arranged diaphragms, while the walls of L. 
globulare are indented wherever diaphragms are inserted, thus giving a beaded appearance 
to the mesopore. In addition, the diaphragms of L. globulare are irregular in shape, num- 
ber, and placement. A vertical fracture therefore will serve to distinguish the zoaria of the 
two species, L. globulare showing no diaphragms in the zocecia and irregularly spaced dia- 
phragms in the beaded mesopores, and D. walkeri exhibiting diaphragms in both zocecia and 
mesopores, closely placed in the latter. 
Occurrence. — Rare in the Rochester shale at Lockport, N. Y. 
Catalogue number, 35771, U. S. National Museum. 
Lioclema peculiare n. sp. 
PI. XXIII, figs. 19-22; PI. XXV, fig. 13. 
I A number of specimens of Lioclema have been found in the collections from Lockport and 
other Rochester shale localities that differ from the associated species of the genus particu- 
larly in that the walls of the zocecia show at the surface a row of small crowded granular-like 
acanthopores. An examination with a hand lens will thus readily determine this form, but 
other points of difference are the thin-walled zocecia and unusually few mesopores. The 
following description is believed to contain the more important characters. 
