RiTTEB. — Eyes of Typhlogobius calif. 



PLATE I. 



Fig. 1. View of the dorsal side of the head of an individual I'J mm. long, show- 

 ing the distribution of the pigment cells, the folds of the skin, and the 

 eyes. X 18. 



" 2. Similar view of an individual about 55 mm. long. X 2J. 



" 3. An individual of the same size seen from tiie ventrolateral side. X 2. 



" 4. iS'itric-acid glycerine preparation of integument from the dorsum of the 

 head of a specimen 72 mm. long, showing the blood-vessels and the 

 pigment cells. — Surface view. X 59. 



