Dr. n. Woodivard — Trilohites from Cormvall. 151 



II. — Notes on a series of Trilobites obtained by Mr. Howard 

 Fox, F.G.S., from the Devonian of Cant Hill, St. Minver 

 Cornwall. 



By Henry Woodward, LL.D., F.R.S., F.G.S 

 (PLATE V, Figs. 1-5.) 



IN September of last year I received from Mr. Howard Fox, F.G.S. , 

 of Falmouth, nine specimens of Trilobites for the purpose of 

 determination and description. They are all more or less 

 fragmentary, and distorted by slaty cleavage, as is usually the case 

 with fossils from these Devonian Slates of Cornwall and Devon, 

 reminding one of the distorted Trilobites and Starfishes from the 

 Lower Devonian Slates of Bundenbaoh, Germany. 



I subjoin a list of the specimens received and my notes thereon, 

 which I hope may prove acceptable to my friends in Cornwall. 



1. Phacops latifrons, Broun: Cant Hill, St. Minver, North Cormvall. 



2. ,, [latifrons^) ,, ,, ,, ,, 



3(i,b. ,, granulatus,'M.vinstev: east of Cant Cove, north shore, North Cornwall. 

 4. „ „ ,, Cant Hill, St. Minver, 



5- )) )> 



6. ,, {latifrons?) 



7. ,, ptmetatus, Steininger: 



8. ,, l(Bvis (?), Miinster : 



9. ,, latifrons, Bronn: 



1. Phacops latifrons, Bronn. (Plate V, Figs, la, 1&, 2 ?) 



Galymene latifrons, Bronn, 1825 : Leonhard's Zeitschr. f. d. Mineral., p. 317, t. ii, 



figs. 1-8. 

 Phacops latifrons, Sandberger, 1850 : Verstein. Rheinisch. Schichtensyst. Nassau, 



t. i, fig. 7. 

 Phacops latifrons, Salter, 1864: Mon. Pal. Soc, pt. i, p. 18, pi. i, figs. 9-16. 



I have referred Nos. 1, 2, 6, and 9 of Mr. Howard Fox's specimens 

 to Phacops latifrons, Bronn, which is one of the most characteristic 

 forms of Devonian Trilobites, and is recorded by writers on this 

 formation from Cornwall, Devon, the Eifel, in Germany, and 

 elsewhere. 



No. 1 is a rolled up and very much compressed specimen drawn 

 on PI. V, Fig. la, in profile ; the same specimen being also shown 

 from the underside in Fig. 1&. Fig. la exhibits the right cheek or 

 glabella, and the large compound eye, which is very prominent in 

 this species. The surface of the glabella (which in P. latifrons is 

 covered with coarse tubercles) is completely obliterated in this 

 specimen by the compression which the fossil has undergone in 

 the matrix. The angle of the cheek is bluntly rounded off and not 

 produced into a genal spine, the border is rounded and slightly 

 elevated. The visual surface of the eye forms a raised crescent, 

 9 mm. above the cheek border, with a length of 18 mm. along its 

 outer curved surface. It shows upwards of twelve rows of facets, 

 each row having from five to six distinct prominent rounded lenses 

 upon its surface. The compressed body and head are 35 mm. in 

 thickness and 50 mm. long in profile in their present folded up state. 



