Palaeontologie. — Algae. 109 



found in shale from the Middle Estuarine series of the Jurassic, in 

 Gristhorpe and neighbourhood. The leaves are detachable from the 

 shale and can be mounted whole, and also afiford good cuticles 

 for microscopic examination after suitable treatment. The diagnosis 

 of the genus is as follows: "Leaves oblanceolate to linear tapering 

 into a distinct petiole. Apices rounded or retuse. Veins distant, 

 dichotomising near base of lamina and more or less parallel above, 

 slightly convergent near apex. Epidermal cells more or less rectan- 

 gular or polygonal. Stomata with group of angular subsidiary cells 

 regularly arranged round and above the guard cells. 



Two species, Eretmophylliun piibescens and E. Whitbiense are 

 described, differing in the texture of the leaf surface, number of 

 stomates etc. 



As regards their systematic position the author says: "We are 

 justified in regarding these Yorkshire leaves as types of a new 

 genus of Ginkgoalian plants, which form a connecting link between 

 Ginkgo, or rather Ginkgodium and Scüdenia or Phoenicopsis (if 

 indeed these latter genera are memters of the Ginkgoalian alliance)". 



M. C. Stopes. 



Darbishire, O. V., Chantransia Sanctae- Marine. A new British 

 Species (Northumberland Sea Fisheries, Report for 1909. p. 40 — 41. 

 2 pls. Newcastle on Tyne: Cail. 1910.) 



The new species occurs endophytically, but intercellularly on 

 the lower portion of the frond of Himanthalia lorea. It most nearly 

 resembles C. immersa, but differs in having as a rule no hairs. As 

 the description is not readily available, the diagnosis is appended: 

 Thallus endophyticus, filis instructus totaliter immersis, intercellu- 

 laribus, apicibus utrisque solis ramosis, cellulae latae .009— .011 mm. 

 rotundatae aut medio inflatae, rarius eiongatae, pilis longis raris- 

 sime instructae; chromatophorum non bene visum; sporangia quasi 

 emersa, .011 mm. lata et ad .015 mm. longa, monospora. Habitat 

 in fronde iertili Himanthaliae loreae, St. Mary 's Island Northum- 

 berland. E. S. Gepp. 



Coburn, H., The fruiting of Catenella Opuntia. (Ann. of Bot. 

 XXVII. 105. p. 167. London, January 1913.) 



Reproductive organs occur at rare intervals in this Alga. The 

 author calls attention to various records of them, vague or definite, 

 in literature since 1797. She obtained plants with abundant cysto- 

 carpic fruits on Hilbre Island, Cheshire, in August 1912. 



E. S. Gepp. 



Cotton, A. D., Notes on Queensland Florideae. (Kew Bull. 

 Mise. Inform. N». 7. p. 252—255. 1913.) 



During recent years numerous gatherings of Queensland 

 Marine algae have been forwarded to Kew for name, and the lists 

 of determinations have been incorporated in F. M. Baileg's "New 

 Catalügue of Queensland Plants". The present paper records ob- 

 servations on certain Florideae, the notes dealing with morphology 

 and geographica! distribution. A. D. Cotton. 



Harvey-Gibson, R. J. and M. Knight. Reports on the Ma- 

 rine Biology of the Sudanese Red Sea. IX. Algae (Sup. 



