Ischnochiton magdalensis Hinds. Gray Chiton. [Fig. 127.]
Nuttallina scabra Rve. Scaly Chiton. [Fig. 128.]
Nuttallina californica Nutt. California Chiton. [Fig. 129.]
Trachydermon dentiens Gld. (Pseudodenturus). [Fig. 130.]
Lepidopleurus rugatus Cpr. [Fig. 131.]
Callistochiton crassicostatus Pilsb. Thick-ribbed Chiton. [Fig. 132.]
Tonicella hartwegii Cpr. Hartweg’s Chiton. [Fig. 133.]
SMALL SHELLS Wash Drawings by Miss M. Cate
Caecum californicum Dall. Common at Laguna Beach. [Pl. IV. Fig. 1] ×10.