2R0 MESSES. E. HERON-ALLEN AND A. EARLAND ON THE 



Prondictjlaeia, Defrance. 



225. Frondicularia spathulata, Brady. 



Frondicularia spathulata, Brady, 1879, etc., RRC. 1879, p. 270, pi. viii. fig. 5. 

 „ „ Brady, 1884, FC. p. 519, pi. lxv. tig. 18. 



1 Station. 



Several specimens of this little form at Stn. 4. They resemble the individuals figured 

 by us from Clare Island (H.-A. & E. 1913, CI. pi. viii. fig. 12). Such specimens are of 

 fairly frequent occurrence in muddy dredgings round the British coasts, but have only 

 been recorded and figured by us (loc. cit.). 



226. Frondicularia tenera (Bomemann). (Plate 42. figs. 8-10.) (New to Britain.) 



Lingulina tenera, Bornemanu, 1854, LG. p. 38, pi. iii. fig. 24 a-c. 



„ Tate & Blake, 1876, YL. p. 455, pi. xviii. figs. 15, 15 a. 

 Frondicularia pupa, Terquem & Berthelin, 1875, 1ME. p. 36, pi. iii. (xiii.) fig. 1 a-c. 

 „ millettii, Brady, 1884, FC. p. 524, woodcut fig. 16 a, b. 



1 Station. 



At Stn. 26 (a tube of material labelled " from various localities round Skye ") we have 

 found the specimen which we figure under the above name. As to the origin of the 

 specimen there must be considerable doubt. Bornemann's species in one or other of its 

 innumerable forms is apparently a common and widely-distributed Liassic fossil, but 

 there appears to be no Lias within a great distance of Skye. The specimen, although 

 somewhat infiltrated, cannot be distinctly recognized as fossil — it might be merely a 

 dead recent shell. It consists of a large primordial chamber followed by six chambers, 

 regularly increasing in breadth and but slightly arched, although we think the arching 

 sufficient for its allocation to Frondicularia rather than to Lingulina. The surface of 

 the shell is concave down the median line, and each edge is furnished with four strong 

 costae, extending the entire length of the shell. The aperture is broad and slit-like. 

 Brady's recent species F. millettii, founded on specimens from coral-sand (Raine Island), 

 appears to differ from F. tenera only in the greater number of chambers and the 

 character of the terminal aperture on a produced neck, and the large number of 

 marginal costoe. The range of varieties illustrated by Terquem's F. pupa {ut supra) 

 more than covers these points. His figure 1 c appears closely to resemble both our 

 specimen and Brady's species in all but minor details. As a fossil the form has been 

 recorded under the name of Lingulina tenera from the estuarine clay of Limavady 

 Station and from the Lias of N.E. Ireland (W. 18S0, NEI. p. 150; and Wright, Irish 

 Liassic Eoraminifera, Belfast Nat. Eield Club, 1871, App. ii. p. 26). 



