PLATE XIX. 



Balanophyllia. 



Page. 



Figs. 1 to 3c.. BalanophyUia desmophyllum var. micrvcosiata var. nov 166 



Figs. 1 anil 2, upright views of two specimens, X 2i ; fig. 3, upright view of another 

 specimen, natural size; fig. 3a, costai of the same enlurgeil ; lig. 3b, two costa?, 

 more enlarged, with profile above; tig. 3c, cross .section, showing septal arrange- 

 ment, X 2. 



Figs. 4 to 6. BalanophyUia irrorata (Conrad) 167 



Fig. 4, ni>right view of Conrad's type in the Philadelphia Academy of Natural 

 Scieni'es, x f ; fig. 4a, transverse outline of the same, x ^ : fig. .">, upright view of 

 a typical specimen, natural size; fig. 5a, transverse section of the same, showing 

 septal arrangement, X slightly more than twice; fig. 5b, cost:r of the same, 

 much enlarged, shows .1 shred of epitheca over the costie, profile of the costse 

 above; fig. 6, side view of a septum, showing the distribution of the granulations 

 on the .side of the septum, X about 4. 



Figs. 7 to 8b. llahinophyllia irrorata var. mortoiii (Gabb and Horn) 168 



Fig. 7, upright view of one of (iabb's types in the Philadelphia Academy of Natural 

 Sciences: fig. 7a, transverse outline of the larger specimen, both figures § natural 

 size; fig. 8, a typical specimen, natural size; fig. 8a, a portion of the cross .section 

 of the same specimen, X 2, to show septal arrangement: fig. 8b, costa' of the same 

 specimen, much enlarged, profile above. 



Figs. 9 and 10. Ilalanoplnjilia irrorata var. aichotoma (Gabb and Horn) 169 



Fig. 9, upright view of one of (iabb'stypes in the Philadelphia Academy of Natural 

 Sciences, X 24; fig. 10, upright view of another specimen, x nearly 2; this speci- 

 men is somewhat intermediate between var. mortonl and var. dichotoiiia. although 

 it is referred to the latter. 



Figs. 11 .and 11a. BalanophyUia irrorata var. coniformis var. nov 170 



Fig. 11, upright view of a specimen, natural size; fig. 11a, cross section of the same, 

 X 2, showing sept.al arrangement. 



Figs. 12 to 14. BalanophyUia iiiaiiris sp. nov 171 



Fig. 12, upright view of a specimen in the Ignited States National Museum: fig. 13, 



upright view of another specimen in Philadelphia Academy of Natural Sciences, 



natural size; fig. 14, somewhat diagrammatic representation of septa for one- 



cjuarter of a cross section. 



Figs. 1, 2, and 9 drawn by J. Henry Blake; figs. 4 and 7 by K. Shepjiard; all others by 



Dr, J. C, McCouuell. 



246 



