CRUSTACEA OF THE TRES MARIAS ISLANDS. 75 



coast, La Paz, Lower California; Rio Presidio, Siualoa; Rio de Alica, 

 Tepic; Barranca Ibarra, Rio Santiago, Jalisco, and Rio Armeria, 

 Colinia, Mexico; Riode los Platanales and Quebrada Chavarria Golfito 

 (bth tributary to the Gulf of Dulce), Costa Rica; River David, Chiri- 

 qui, United States of Colombia, 4,000 feet elevation; Guayaquil, 

 Ecuador. On the Atlantic coast, San Antonio, Tex. ; Las Moras Creek, 

 Kinney County, Tex. ; Brownsville, near mouth of Rio Grande, Tex. ; 

 Amixtlan, and Zacatlan, Puebla, Mexico; Escondido River, 50 miles 

 from Bluefields, Nicaragua; Port Castries, St. Lucia, West Indies. 



The west African form, />. vollenhovenii (Herklots) is no more than 

 a subspecies of B.jamaicensis. It differs only in the slenderer second 

 pair of feet, the carpal and meral joints of which are subequal. The 

 relative lengths of the rostrum and the antenna! scales and peduncles 

 agree with those in some specimens of jamaicensis. The two forms are 

 considered identical by Dr. Ortmann. 



According to Dr Edward Palmer, B.jamaicensis is much eaten at 

 Colima, and is offered in the market there as a choice article of food, 

 especially on Fridays and Sundays. 



