610 K. ETHEEIDGE ON THE PALEONTOLOGY OF THE 



Genus Chetetes. 

 (Monticulipora, D'Orb. 1850.) 



Chcetetes, sp. allied to C. tumidus (Phillips). 



Calamopora tumida, Phill. Geol. Yorksh. vol. ii. p. 200, t. 1, 

 f. 49-57. 



Favosites tumida, Portlock, Londonderry, p. 326, t. 22. f. 4. 



Monticulipora tumida, De Kon. Nouv. Rech. sur les Anim. Foss. 

 Terr. Carb. Belg. p. 143, t. 14. f. 3. 



Eight or ten portions of this branching species are in the collec- 

 tion ; they much resemble Chcetetes (Monticulipora ?) inflatus, De 

 Koninck, from the Carboniferous Limestone of Vise (Belgium) ; they 

 are also equally near C. fruticosus, Hall, from the Hamilton group 

 of North America. This is evidently a very variable species, differing 

 to almost any extent in size and habit. 



JSp.char. Corallum branching, the branches round or subcylindrical 

 or subdepressed ; corallites prismatically arranged ; calicular open- 

 ings nearly at right angles to the axis or very oblique to the exterior 

 surface, or in their upward growth they are nearly vertical, until 

 bent or inclined to the face of the corallum, where they (the calices) 

 become nearly horizontal. The ramose and branching habit of this 

 species of Chcetetes (Montieuli/pora) is clearly shown in the fragments 

 collected, and, judging from their diameters, it must have been of 

 considerable size. 



The Chsetetinse, as a group, have received many dissimilar and 

 doubtful genera. The restricted genus Chcetetes alone absorbs ten 

 genera; the species C. tumidus has about forty synonyms, and C. 

 inflates ten. I refer the specimens collected by Captain Feilden to 

 C. tumidus, as being its nearest ally. 



Hah. Feilden Isthmus, lat: 82° 43'. 



Group Hugos a. 



Genus Lithosteotion, Fleming, 1828. 

 Lithosteotion junceum (Fleming). 



Caryophyllea juncea, Flem. Brit. Animals, p. 509. 

 Siphonodendron sexdecimcde, M'Coy, Brit. Pal. Foss. p. 109. 

 Lithodendron sexdecimcde, Phill. Geol. York, vol. ii. p. 202, t. 2. 

 f. 11-13. 



The genus Lithostrotion, through three species, connects, with 

 other genera, the Carboniferous Coelenterate faunas of America and 

 Europe. No less than twenty- eight species are European and five 

 American, three of which are common to both continents, viz. L. 

 bascdtiforme, L. ccespitosum, and L. floriforme. From our single 

 specimen, L. junceum is now recorded for the first time from the 

 western hemisphere, and at the most northerly land known (lat. 

 82° 43'). The corallites are too small for its allied species, L. 



