CRUSTACEA. 9 



THORACOSTRACA. DECAPODA. 



PORTUNIDAE. 



21. Callinectes saptdus Rathbun. 

 Blue crab ; Common edible crab. 



Lupa hastata Say, Journ. acad. nat. sci. Phil., 1817, vol. 1, 

 p, 65. "In bays, &c." 



Callinectes scqndus Rathbun, Proc. U. S. nat, raus., 1896, vol. 

 18, p. 352,'pl. 12, pi. 24, fig. 1, pi. 25, fig. 1, pi. 26, fig. 1, pi. 27, 

 fig. 1. 



Muddy shores to deep water ; brackish water of estuaries. 

 Mass. — Millpond, an inlet of Salem Harbor; Mass. Bay; from 

 Cape Cod southward. 

 R.I. 

 CoNisr. 



22. OvALiPES ocellatus (Herbst). 



Lady crab ; Sand crab. 



Cancer ocellatus Herbst, Naturg. d. krabben u. krebse, 1799, 

 vol. 3, pt. 1, p. 61, pi. 49, fig. 4. '* LoxG-EiLAXD bet New- 



TORCK." 



Platyonichus ocellatus DeKay, Nat. hist. New York, pt. 6, 

 Crust., 1844, p. 9, pi. 1, fig. 1, pi. 5, fig. 7. 



In sand at low-water mark and off shore to 10 fathoms. 

 Mass. — From Provincetown and Barnstable southward. 

 R. I. 

 Conn. 



CANCRIDAE. 



23. Cancer irroratus Say. 



Rock crab. 



Cancer irroratus Say, Journ. acad. nat. sci. Phil., 1817, vol. 

 1, p. 59, pi. 4, fig. 2. "Inhabits THE ocean. Common." R. 

 Rathbun, Fisheries industries of U. S., 1884, sec. 1, p. 766, pi. 

 260, figs. 1-3. 



