164 Addison E. Verrill, 



developed than in fig. i; m, mouth; mp" and mp"', second and third 

 maxillipeds ; p' p v , five pairs of legs ; other letters as in fig. i. 

 After Bate. 



PLATE IV. 

 Figure i. Scyllarides czquinoctialis, male; ventral view, natural size. 



PLATE V. 



Figure I. Scyllarides americanus. Dorsal view, about natural size. No. 

 21607, U. S. National Museum. Photograph furnished by Miss M. J. 

 Rathbun. From Bermuda. 



PLATE VI. 



Scyllarides americanus Ver. Type ; from Bermuda ; oblique 

 view, about natural size. A. H. V. 



PLATE VII. 



Scyllarides sculptus bermudensis Ver. from Bermuda. No. 

 21608, U. S. Nat. Museum; coll. Dr. T. H. Bean. Photo- 

 graph sent by Miss M. J. Rathbun. 



PLATE VIII. 



Figure la. Glypturus branneri; la, larger chela: ib, smaller chela: ic, 

 leg of second pair : id, leg of third pair : ie, uropods and telson, 

 much enlarged. 



Figure 2. Panulirus argus; rostrum (r) and base of antenna; c, eye; 

 o, eye-stalk; s' s"", four spines; p, tubercle; q, hard ridge. 



Figure 2a. The same ; stridulating organs ; see also pi. ix, fig. i ; m, 

 hard tubercle ; n, 1, two smaller tubercles ; s, t, transversely grooved 

 and ridged area; s, spine. All original. By A. H. V. 



PLATE IX. 



Figure i. Panulirus argus. Stridulating organs, same as pi. 8, fig. 2a, 

 enlarged ; st., hardened, grooved and ribbed area ; a, marginal 

 tubercle; a', stout margin; b, rib on grooved area; c, inferior 

 tubercle ; d, wrinkled flexible area. Original. By A. H. V. 



Figure 2. P. guttatus. Stridulating organs, after Bate. Lettering as in 

 fig. i. 



Figure 3. Nephropsis rosca; type, after Bate ; side view, about natural 

 size. 



Figure 4. The same ; frontal parts, seen from above ; about natural size. 



Figure 4a. The same, antennule ; 4b, base of antenna ; 4c, mandible ; p, 

 its palpus ; 4d, uropods and telson ; x2^. 



