214 Field Note. 



calcareous inaltcr, with toraminifera. A few frai^ments of shell 

 and here and there a tliin, thread-like spicule of a sponge can be 

 seen. 



The foraminifera, however, exhibit considerable variety in 

 genera, and the chalk would I think be worth washing if soft 

 enough. Amongst those I can recognise are Globigerina^ which 

 is fairly common. Texfularla (two or three species), Cristell- 

 aria, A\)dosar/a ( ? ), and some Ratal inc forms, besides others. 

 ' Spheres ' are present, but most of the single cells seen in this 

 section appear to me to be the primordial cells of Globigcrina or 

 other foraminifera. The shelly fragments are very small, and 

 give no clue to identification, but there is one large fragment of 

 the test of an Echinoid. I estimate the recognisable ingredients 

 of this chalk to be about 20-25 P^"" cent, of its mass, the rest 

 being amorphous material. 



Rare Speeton Clay Fossils. One of the most interesting 

 fossils collected ditring the visit of the Yorkshire Naturalists' 

 Union to Speeton in June, is a small ammonite of the Olcoste- 

 plunius type which Prof. Kendall found on the weathered clays 

 high up on Black Cliff Ridge. 



It evidently belongs to the form of ilisco/alacttis with few 

 umbilical ribs (19-21) not to that with many (24-30), de- 

 scribed and figured as Olc. {SitJibcrskites) discofalcatiis in the 

 ' Argiles de Speeton'* (p. 146, pi. xi. fig. 15), but which Prof. 

 Pavlow in a later work t has shown to be Olc. ? phillipsi Neum. 

 and Uhl. (sp. or subsp.). 



Though but 25 mm. across, several of the siphonal ribs 

 exhibit the occasional befurcations usually seen only in older 

 examples. It has been suggested that the presence of this 

 species here should be recorded as affording additional proof 

 of correspondence between the fauna of the Russian and Speeton 

 Neocomian deposits. 



.Another find on the same excursion was a small Crioceras 

 of tlie genus .Ancyloceras, belonging to a species which Prof, 

 von Koenen, to whom specimens had previously been submitted, 

 considers undescribed. — C. G. Dan'kokd, Reighton. 



* ' Ar^'ili.'s dc .Speeton i-t I, curs l"!<jiiiv;iU'iits.' A. l\i\lo\v ct (i. W. 

 Laniplii^ifh. .Moscmi, 1892. 



t ' Le Cretace Iiifc-rii-iir ilc 1h Riissie I't s;i I'.uiiH'.' A. I'avlow. V. 7.S, 

 pi. vi. tiif. I (t, b, r, tl ; \i\. vii. tij^. 2 a, b, r, fi^. 3 </, /;, <: 



Naturalist, 



