Figures 1-8. Tucca impresstis, female, from Chilomyctenis schoepfi taken off Cape San Bias, Fla., in 

 the Gulf of Mexico. The letter in the parentheses after the explanation of each figure refers to the 

 scale at which the figure was drawn. 1. Entire, dorsal (A). 2. Head, neck, and anterior end of 

 trunk, showing relative position of various cephalic appendages, ventral (B). 3. "Tail" (= urosome), 

 ventral (C). 4. Genital segment, showing egg sac attachment area, dorsal (D). 5. Caudal ramus, ven- 

 tral (E). 6. First antenna, exterior (E). 7. Second antenna, exterior (E). 8. Lamelliform process at 

 tip of second antenna, interior (F). (a'. =first antenna; a". = second antenna; md.=mandible; mx'. 

 =first maxilla; mx".=second maxilla; mxpd.=maxilliped; p. = paragnath; p,. = leg 1; p2.=leg 2). 



3YCL0P0ID COPEPODS OF GENUS TUCCA 



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