274 EMMERICH ON THE MORPHOLOGY, CLASSIFICATION 
a transition from the latter genus to Phacops by means of the 
facial suture. I have given it the above name on account of 
its peculiar caudal shield. Two species of Portlock, viz. Am- 
phion multisegmentatus and Ogygia rugosa, in this respect like- 
wise belong to it. 
XI. Amphion, Pand. Eyes smooth. Glabella of equal width, 
lobed. Body many-jointed (20-jointed) ; caudal shield 
small and distinctly articulated. 
A. frontilobus, Pand. Portlock combines, together with 
Amphion, some species not belonging to this genus; A. ge- 
latinosus belongs to Phacops. I have already mentioned 
others. 
XII. Calymene, Brong. emend. With oculi hiantes. Forehead 
narrowest anteriorly, lobed. Body 13-jointed. Caudal 
shield articulated. Ribs mostly furcated. 
C. Blumenbachii, Brong. (Pl. IV. fig. 10.), Tristani, Brong. 
(distinguished from the former by the margin of the forehead, 
which projects in the form of a snout and is curved upwards.) 
XIII. Homalonotus, Konig (Trimerus, Green). The same as 
XII., but the glabella is not lobed. 
H. Knightii, Konig, Herschelii, Murch., delphinocephalus, 
Green. 
B. Paradoxides. Not contractile. 
XIV. Conocephalus, Zenk. Thorax 14-jointed ; eyes smooth (?), 
in other respects like XI. 
Sulzeri, Schloth., striatus, m.—Bohemian grauwacke. 
XV. Ellipsocephalus, Zenk. Forehead broad, glabella narrow, 
almost of equal breadth, rounded at the anterior part, not 
divided into lobes. Cheeks very narrow, widely distant. 
Body 12-jointed. Caudal shield small, with a distinct axis, 
but without articulation. 
E. Hoffii, Schl Bohemian grauwacke. 
XVI. Anthes, Goldf. Glabella lengthened semi-elliptically, di- 
vided into lobes. Maxillary shields? Eyes? Thorax 12- 
jointed, with short, acute fins. Caudal shield with a 3-jointed 
axis and an even border tridentate on each side. 
A. scarabeoides, Wahlenb.—Andrarum. 
XVII. Paradowxides, Brong. emend. (Olenus, Goldf.*). Gla- 
* Zenker was the first (in 1828) who proposed a classification of the Para- 
dowides, the name Olenus should therefore be retained for the Parad, Tessini, 
as Zenker named it. 
— = =a. “4 a SS 
