Clark. — The Echinoderma of Peru. 



PLATE 13. 



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



Fig. 2 Mellita stokesii. Tunibes, Peru. Upper surface. X |. 



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



Fig. 4 Agassizia serobiculata. Capon, Peru. Side view. X *• 



