364 Proceediwjs of the Royal Physical Society. 



PI. Ixxvii. Calamites appkoximatus, L. and H. {not Brongt.). 



Locality. — Jarrow Colliery. 



Horizon. — Lower Coal-Measures. 



Remarks. — This is not the Calamites apj)'i''oximatus, Brongt., 

 but probably the Calamites Schutzei, Stur., which I regarded 

 as a variety of Calamites varians, Sternb. Weiss places 

 Calamites varians in his Calamitina. The plant may be 

 denominated Calamitina vapjans, var. Schutzei, Stur. sp.^ 

 The specimen figured is in the " Hutton Collection." 



PL Ixxviii. Calamites. (With roots.) 



Locality. — Prom the Newcastle Coal Pield. 



Remarks. — These I reojard as the basal extremities of 

 Calamites Suckowii, Brongt. The original is in the " Hutton 

 Collection." 



PL Ixxxix. Calamites cann^formis. 



Locality. — (?) 



Remarks. — This I also believe to be the basal portion of 

 Calamites Suckowii, Brongt. In regard to Calamites 

 cannmformis, SchL, I must confess that I do not know what 

 that plant is. Schlotheim's type consists of a basal ex- 

 tremity of a Calamite, but so preserved that there are no 

 characters shown on which to found a species. 



Under Calamites cannceformds, SchL, botanists appear to 

 have been in the habit of placing any large badly-preserved 

 Catamite stems. The species seems to have no clearly 

 defined scientific position. 



VOLUME IL 



Pis. 1XXX.,1XXXL BOTHRODENDRON PUNCTATUM, L. and H. 



Locality (pi. Ixxx.). — Jarrow Colliery. 



Horizon. — Lower Coal-Measures. High Main Coal Seam. 



Jjocality (pL Ixxxi.). — Percy Main Colliery. 



Horizon. — (?) 



' See Weiss, Steinkohlen-Calamarien, part i., 1876 ; part ii., 1884. Berlin. 

 (Abhandl. z. geol. specialkarte v. Preussen u. d. Thiiringisclien Staaten, 

 Baud ii., Heft. 1 ; Band v., Heft 2.) 



