258 VALVIFERA • IDOTEIDAE 



Erichsonella attenuata (Harger, 1873) 

 Figure 108B 



DIAGNOSIS 6 11.4 mm, ovigerous 9 12.0 mm. Body dorsally smooth. 

 Cephalon lacking middorsal elevation. Antennule reaching only slightly be- 

 yond antennal peduncular article 2. Pleotelson with slight marginal bulge in 

 anterior half, indicating ventrolateral articulation of uropod. 



RECORDS Connecticut to Miami; Florida, Mississippi, Texas, Gulf of Mex- 

 ico; intertidal to 2 m, usually associated with submerged seagrass and algal 

 beds. 



REMARKS While not recorded in the Florida Keys, this species does reach 

 Miami, and continues into the Gulf of Mexico. 



Erichsonella filiformis (Say, 1818) 

 Figure 108C 



DIAGNOSIS 6 10.5 mm, ovigerous 9 8.2 mm. Body dorsally with bifid tu- 

 bercle on cephalon, and low rounded middorsal tubercle on pereonites. An- 

 tennule reaching midlength of antennal peduncular article 3. Basis of per- 

 eopods 2-7 with larges tubercles. Pleotelson with distinct lateral shoulder in 

 anterior half. 



RECORDS Connecticut to Florida, shallow infratidal to 55 m; Bahamas; 

 Turks and Caicos Islands; Puerto Rico; Quintana Roo, Yucatan Peninsula, 

 Mexico, 60-109 m; Florida and Texas, Gulf of Mexico. 

 Brazil. 



Erichsonella Jloridana Richardson, 1901 

 Figure 108D 



DIAGNOSIS Ovigerous 9 1 0.0 mm. Antennule reaching distal end of anten- 

 nal peduncular article 3. Cephalon with strong trifid tubercle. Pereonites 1-7 

 each with posteriorly directed spine near posterior margin; pereonites 1-4 

 each with lateral spine. Basis of pereopods 2-7 smooth. 



RECORDS Florida Keys, intertidal to 2 m; Florida, Gulf of Mexico, interti- 

 dal mud flats. 



