NO. 1557. NEW CHINESE PALEOZOIC FOSSILS— GIRTY. 41 



.shown in transverse section, relativel}^ thick. The zooidal tubes are 

 rather closely tabulate, and the walls are perforated. The perfora- 

 tions are of unequal sizes and irregular distribution. It is without 

 doubt owing' to these interruptions in the radial walls that in cross 

 section two or more of the zooidal tubes appear to be connected into 

 a single large vermicular one. Sometimes, owing perhaps to the 

 influence of tabulte and porous developments, the walls in longitudinal 

 section have a nodose appearance, somewhat as in Stenopora. Of 

 course the two genera are otherwise widely different and have different 

 afiinities. 



In the lower part of the coenosteum the zooidal tubes are narrow 

 and bent inward toward the point of origin, as in colonies of com- 

 pound corals and bryozoans. In this region the walls are thin and 

 the pores and tabulre much less plentiful. 



This form appears to be but distantly related to those descri])ed 

 from the Salt Range of India, and it presents more structural affinities 

 with the older geims Stronudopora. From this, however, it is clearly 

 distinguished by the pattern of the apertures and by the absence of 

 astrorhiza? and of latilaminie. The zooidal tubes and bounding walls 

 are much more continuouslj' and regularly developed and the walls 

 themselves apparently somewhat different in construction. Thej^ 

 appear to l)e dense, and but for the local thickening, which may repre- 

 sent radial pillars, structureless. Carnegia seems to belong to the 

 Stromatoporidfe, but to be distinctly different from any of the genera 

 at present assigned to that family. 



Locality and horizon. — Pennsylvanian (Wu-shan limestone); near 

 Liang-ho-k'ou, East Ss'i-ch'uan (Station 7). 



BRYOZOA. 



FISTULIPORA WILLISIANA," new species. 



Description. — This species grows in thin, epithecate expansions, 

 occurring in considerable numbers in the limestone of which it appears 

 to constitute a paleontologic feature of some importance. The largest 

 fragment seen measures 15 nun., but the original size may have been 

 considerably greater. The thickness of the typical specimen is but 

 little over one-half mm. The grow^th is irregular and contorted. 

 MaculfB are present, but their size and distribution have not been 

 determined. The zooecia are quite small; they occur six or seven in a 

 distance of 2 mm., and are situated at intervals of about one or two 

 times their own diameter. A lunariura is well developed. Mesopores 

 are usually large and, as a rule, separate the zooecia in single rows. 

 They are about the size of the zooecia themselves, and in some cases 

 are even larger. 



« This species is named for Mr. Bailey Willis. 



