78 
EXPLANATION OF PLATE I. 
ENCRINURUS PUNCTATUS. 
the 
figs 
Fig. 1. The head enlarged. 
Fig. 2. The head and part of the thorax enlarged. 
Fig. 3. The pygidium enlarged. 
Fig. 4. Side view of the pygidium enlarged. 
Interior view of the pygidium enlarged. 
ry 
Ig 
Ut 
Photographic copies of Kutorga’s plate 8, figs. 4 a-f, with an alteration of 
anterior course; facial sutures. 
Fig. 6. Full grown specimen. 
Fig. 7. Adult specimen. 
Fig. 8. The pygidium, upper fig. of the 10th segment, with spine. 
Fig. 9. Underside of head, showing hypostoma; lower fig.; eye magnified. 
Fig. 10. The hypostoma; the tip is slightly recurved. 
Photographic copies of Fletcher’s plate 32. 
Fig. 11. The hypostoma, after Lindstrom’s plate 4, fig. 5. 
Fig.12. The hypostoma, front and side view—after Lindstrom’s plate 4, 
. 12 and 13. 
Fig. 13. The hypostoma enlarged, a sinuated margin: b, cucullate base; 
c, the points of the extended base of attachment. 
Photographic copies of Salter’s plate 4. 
Fig. 14. The head, showing anterior course of facial sutures and hypos- 
tom—aafter Schmidt’s figures. 
Fig. 15. Front view of the head. 
Fig. 16. Under view of the tail, somewhat enlarged to show the incurved 
scabrous margin which unites the lateral ribs of the tail; their free points are 
seen projecting beyond it—after Salter’s plate 4, fig. 15. 
Fig. 17. The hypostoma. 
Fig. 18. The glabella and fixed cheek; shows anterior course of facial 
suture. 
