106 F. R. Cou'per Heed — Salter's Undescrihed Species. 



belong to the small rodents, were found scattered over the cave 

 and buried in the earth with the other remains. Some other 

 remains are referred to the dog, sheep (which appears to have been 

 considerably smaller than the ordinary domestic variety), a species 

 of small deer, several bones of Eana temporaria, and three snail 

 shells, probably Helix hortensis. Dr. Andrews kindly identified 

 the remains of birds found in the cave. They belong to five 

 species, remains of all of which have occurred in other caves in 

 Britain. They are Tardus sp., probably Turdus viscivorus, pigeon sp.. 

 Anas boscJias, Lagopiis scoticiis, and Perdix perdix. 



I wish to express my thanks to Dr. Andrews and Dr. Forsyth 

 Major for the very kind and valuable help I have received from 

 them, especially in assisting me to determine the extinct forms, 

 and also for Dr. Forsyth Major's kind advice in selecting those 

 which have been figured in the text. 



III. WOODWARDIAN MUSEDM NOTES : SaLTER's UnDESCRIBED 



Species. III. 



By F. R. CowPER Reed, M.A., F.G.S. 



(PLATE VII.) 



Phacops {Odontocheile) caudatus, var. corrugatus, Salter. (PL VII, 



Figs. 1, 2.) 

 1873. Salter : Cat. Camb. Sil. Foss. Woodw. Mus., p. 93 {a 461). 



There are six specimens of this variety in the Woodwardian 

 Museum, all of which come from the Woolhope Limestone, of 

 Littlehope, and were labelled by Salter. Five of them are more 

 or less perfect head-shields, and the other is a pygidium in a good 

 state of preservation. 



The head-shield shows the general characters of Ph. caudatus, 

 var. a, indgaris,^ but the arrangement of the tubercles on the frontal 

 lobe of the glabella is peculiar, and resembles that of Ghasmops, for 

 they form a V-shaped pattern, six or seven large tubercles com- 

 posing each arm of the V. The arms of the V enclose an angle 

 of about 30° to 40°. A few other large tubercles occur on the 

 frontal lobe close to the V, and starting from its apex show an 

 obscure radial arrangement. The margin of the head-shield, where 

 the shell is preserved, exhibits an ornamentation consisting of 

 closely-set, rather coarse granulations. The front margin is pro- 

 duced into an obtuse point. 



The main characters of the pygidium are similar to those of the 

 typical variety of Ph. caudatus. The axis, however, shows ten 

 distinct rings with a less distinct eleventh one, and a short, faintly 

 annulated, terminal piece. The rings are less strongly defined in 

 the middle, owing to the transverse furrows being comparatively 

 weak in the middle while deeply impressed at the sides. 



On the fourth and seventh axial rings is a pair of small oval areas, 

 slightly raised above the general surface and finely pitted (the 

 so-called 'cutaneous glands' of Salter, op. cit.). There are faint 

 1 Salter: Mon. Brit. Trilob. Pal. Soc. 1864, p. 51. 



m 



