EXPLANATION OF PLATES 229 



Figure la. The same specimen. Part of dorsal side of a ray, near base. 

 X 7. 



Figure 2. A. duplicaias variabilis (Liitken). Tyi)e. No. 2,084, Yale Mus. 

 Portion of a ray, 4th to 6th plates, dorsal side. X 9. 



Figure 2a. Tiie same specimen. Under side of portion of a ray. X 9. 



Figure 'A. A. nitidu.'i foivipatus Verrill. Type. No. 10,067, N. Mus. Por- 

 tion of under side of a ray. X 7. 



Figure 4. Luiilia thyans Perrier. No. ."),.5'_'5, Yale Mus. Portion of un- 

 der side of a ray. X 7. 



Figure 4a. The same specimen. I'ortiou of the dorsal side of a ray. X 7. 



Plate XVII 



Figure 1. Peciinastcr mixtiis Verrill. Young, (No. 18,470). Dorsal side. 

 X 3. 



Figure 2. Bosastcr alexandri Perrier. Dorsal side. X 3, off Havana. 

 Bahama Expedition. Some plates are lacking. 



Plate XVIII 



Figure 1. Cheirasier enoplus Verrill. Type. No. 7,425, N. Mus. Dorsal 



side; 3/5 natural size. 

 Figure 2. C. planus Verrill. Type. No. 18,469, Nat. Mus. Dorsal view. 



X 11/5. 



Plate XIX 



Figure 1. LuiJiu elegans Perrier. Young. Dorsal view. X 31/4. Ba- 

 hama Expedition, station 63. 



Figure 1. Astropecten nuttingi Vcv., sp. nov. Type. Bahama Exped., 

 tion, station 61. X 3^^. 



Plate XX 



Figure 1. Astropecten niiidtis forcipatus Ver., nov. Type, No. 10,067. 

 Dorsal side. X 1 2/5. 



Figure 2. A. nitidns \'er. Type, No. 18,344, Nat. Mus. X 1 2/5. 



Plate XXI 



Figure 1. Astropecten nuttingii Ver., sj). nov. Type. Bahama Exped., 

 sta. 64. Dorsal side. X 1 1/5. 



Figure 2. The same specimen. Under side. X 1^. 



Plate XXII 



Figure 1. Astropecten comptus Ver. Type, No. 18,346, Nat. Mus. Dor- 

 sal side. 7/10 natural size. 



Figure 2. A. duplicatus Gray. No. 10,989, Nat. Mus. Dorsal side. 7/10 

 natural size. 



Plate XXIII 



Figure 1. Astropecten dvplicatus Gray. St. Thomas. From Liitken, 

 Dorsal view. X 1%. 



Figure 2. The same, var. variaMlis (Liitken). Cotype, from Liitken. Ven- 

 tral view. X V/i. No. 2,084, Yale Museum. 



