Clark. The Echinoderms of Peru. 



PLATE 13. 



Fig. 1 Encope micropora. Bay of Sechura, Peru. Upper surface. X 



Fig. 2 Mellita stokesii. Tumbes, Peru. Upper surface. X $. 



Fig. 3 Lovenia cordiformis. San Diego, Cal. Upper surface. X f . 



Fig. 4 Agassizia scrobiculata. Capon, Peru. Side view. X f. 



