EXPLANATION OF PLATES 



Plate III and plate II, fig. 1, are from photographs loaned by 

 the U. S. National ^luseuni. The other photographs on plate II 

 were made by ]Mr. Clarence R. Shoemaker and retouched by "Sir. 

 Seward H. Katlilinn who made the drawings on plate I. 



Plate I 

 I'll uiiiinis Ixtrhiidciisis, Q, Pai'hados 

 Fig. 1. .Major .-liela, X 8. 

 2. :\linor chela, X 9.4. 

 '■]. An ambulatory leg, X S. 

 4. Carapace, with eyes and antennae, X "i- 



Plate II 



Fig. 1. Lissa hlcdriiiatd, 9 , Cat. No. 24120, U. S. N. M., dorsal 

 view, carapace 9.6 mm. long. 



2. Xantliias gnundinunnts, 9 , Cat. No. 20052, U. S. N. ^1., 

 ventral view, X 3. Carapace 9.2 mm. wide. 



3. Same, dorsal view, X 3. 



4. TL rhsfia depressa, 9, Barbados, X 2 2-3. 



5. MicropJirys interrupt us. 6 , Fort Barclay, X 3. Cara- 

 pace, including horns, 16.7 mm. long. 



Plate III 



Mithra.r vdrihhdCKs, 5 holotype. Cat. No. 5036:}, IT. S. N. M., 

 dorsal view, carapace, including lioriis, 66.3 nun. h)ng. 



