154 G. C. Crick — Fossil Cephalopoda 



to refer it to Phacops functatus, Steininger. The surface of the 

 shield is punctate, the head margin is produced in front of the 

 glabella ; the posterior angle of the free-cheek, though not complete, 

 shows that it was originally prolonged backwards into a genal 

 spine. Length of fragment 15 mm., length of visual surface of 

 eye 5 mm. 



Mr. Salter, in 1864, records imperfect specimens of this species 

 as having been found in the Middle and Lower Devonian of 

 Torquay, South Devon, and from the slates of Liskeard, Cornwall, 

 and he remarks : " It is certain that a very beautiful Trilobite has 

 yet to be found in Cornwall and S. Devon, and collectors should 

 look carefully for it " (Pal. Soc. Mon., p. 60). We have now to add 

 the locality of St. Minver. 



No. 8 consists of an imperfect series of nine thoracic segments, 

 and a trace of head and pygidium from Cant Hill, The free 

 extremities of the pleurae are less curved and less expanded than in 

 Ph. latifrons or in Ph. granulatus, and the pygidium appears to be 

 more narrow and elongated, but this may be due to distortion in the 

 rock. I do not propose to determine this specimen specifically, but 

 it may be a distorted fragment of Phacops {Trimerocephalus) Icevis, 

 which has been obtained both in North and South Devon and at 

 Mudstone Bay, etc. 



EXPLANATION OF FIGURES OF TEILOBITES ON PLATE V. 



Fig. la. — Profile of Fhacops latifrons, Bronn. Devonian : Cant Hill, St. Minver, 



Cornwall, x i- 

 ,, lb. — Under side of same specimen. Nat. size. 

 ,, 2. — Fh. latifrons {?). Pygidium. Devonian: Cant Hill, St. Minver, Cornwall. 



Nat. size. 

 ,, 3. — Ph. gramdatus, Miinster. Profile of a nearly perfect specimen from same 



formation, east of Cant Cove, St. Minver. x 2. 

 ,, 4. — Fh. granulatMS, Miinster. A less perfect specimen, showing thoracic 



segments, imperfect head and pygidium. Same formation. Cant Hill, 



St. Minver. x 2. 

 ,, 5. — Fh. punctatiis,^immRgex. An imperfect cheek, with eye. X 2. 

 (For explanation of Figs. 6-8, PI. V, see end of Mr. G. C. Crick's paper.) 



Ill, — On some Fossil Cephalopoda from North Cornwall 



COLLECTED BY Mr. HoWARD FoX, F.G.S. 



By G. C. Crick, F.G.S., of the British Museum (Natural History). 



(PLATE V, Figs. 6-8.) 



rpHE following descriptions are based upon fossils sent to me for 

 1 determination by Mr. Howard Fox, F.G.S. Excepting the 

 specimen which is compared with Orthoceras hercynicum and is 

 marked "E. of Cant Cove," the fossils are from Cant Hill, St. Minver, 

 N. Cornwall. 



At the end of the descriptions are added notes upon some very 

 imperfect fossils which Mr. Fox has collected from other localities 

 in St. Minver, 



