Bull. U. S. F. C. 1900, Vol. 2. — J. E. Benedict. (To face page 148.) 
Plate 3. 
1. Petrolisthes marginatum Stimpson, x 31. 5. Piscsomai glabra Kingsley, x 3. 9. 
2. Petrolisthes tmderitatas Stimpson, x U. 6. Pisosoma angustifrons, n. sp., x 3. 10. 
3. Petrolisthes amcenus (Gu6rin), x 3. 7. Pisosoma serrata, n. sp., x 3. 31. 
4. Petrolisthes quadrates, n. sp., x 3. 8. Megalobrachium poeyi (Gu6rin), x 14. 12. 
Pacliycheles rugirnanus A. Milne-Edwards, x 3. 
Porcettana sayana (Leach.), x 14. 
Porcettana pilosa Edwards, x 14. 
Euceramas ynelongus Stimpson, x 24 . 
