Messrs. Davidson & Morris on some species of Brachiopoda. 255 



ridges crossed by numerous radiating raised striae, more visible 

 on the lateral margins, giving to the squamae a rather serrated 

 appearance ; puncta distinct and rather widely separated. 



Locality : the chalk marl of Hamsey (Mantell), and also from 

 Dover. 



This species was first described by Dr. Mantell in ' The Fossils 

 of the South Downs/ p. 132, but not figured; it does not appear 

 to attain a large size, as the dimensions given by Dr. Mantell 

 agree with some of our specimens, <( length 0*5 inch, width 0*4 

 inch ; the greatest convexity of the united valves 03 inch f and 

 as remarked by Dr. Mantell, the shells are in a good state of 

 preservation and generally of a bluish hue. 



Terebratula Phillipsii, Morris. PI. XVIII. fig. 9 a, b, c. 



Shell compressed, of an elongated pentagonal form, the supe- 

 rior angle being rather sharp ; longer than wide, the width being 

 greatest below the middle ; dorsal valve more convex than the 

 ventral, with a somewhat produced and incurved beak ; ventral 

 valve with two rounded costse commencing about the middle and 

 continued to the margin, with a broad mesial furrow and two 

 lateral ones ; front deeply sinuous ; cardinal area small, concave, 

 with very obtuse and indistinct lateral ridges ; foramen moderately 

 large, round, and rather oblique ; deltidium wider than high ; lines 

 of growth distant. 



This species has some resemblance to Ter. perovalis, Sow., but 

 it is easily recognized by its more elongated pentagonal and de- 

 pressed form, the greater width of the sinus and lobes, the more 

 sinuated front, and the greater prominence of the dorsal ridge. 

 It is also separated from T. sella, Sow., by its elongate form, the 

 greatest width being nearer the frontal margin than in that spe- 

 cies, where it is central. 



Locality : from the inferior oolite of Dinnington near Ilmin- 

 ster ; also at Burton near Bridport, and in Normandy. 



Mr. Moore, Mr. Bunbury and Mr. Walton possess a fine series 

 of this shell. 



Terebratula longa, Roemer. PI. XIX. fig. 1 a, b, c, d. Roemer, 

 Verst. Norddeutschen Oolithen-Gebirges, pi. 2. fig. 11. 

 Shell ovate-elongate, ventricose posteriorly, becoming rather 

 attenuate anteriorly and subtruncate, smooth or only presenting 

 the concentric lines of growth ; dorsal valve with a somewhat ob- 

 tuse keel and a slightly produced but not much recurved beak ; 

 foramen small ; cardinal area flat, bounded by moderately distinct 

 lateral ridges ; ventral valve most inflated near the cardinal area ; 

 deltidium obtusely triangular. 



This appears to be the species cited by M. Roemer, as it agrees 



