22 U.S. NATIONAL MUSEUM BULLETIN 264 



= Stylocidaris calacantha (Agassiz and Clark) --see Mortensen's Mono- 

 graph of the Echinoidea, voL 1, p. 359. 



Lectotype (Mortensen, ibid. p. 356): 



USNM 7308 (dry), Albatross Sta. 3859, between Molokai and Maui, 

 Hawaii, 138-140 fms., Apr. 9, 1902. 



Syntypes : 



USNM 27305 ( Idry), Albatross Sta. 3885, Pailolo Channel, off Moku- 

 hooniki, Hawaii, 136-148 fms., Apr. 17, 1902. 



USNM 27306 (3 dry), Albatross Sta. 3863, between Molokai and Maui, 

 Hawaii, 127-154 fms., i^^r. 10, 1902. 



USNM 27307 (1 dry), Albatross Sta. 4045, west coast of Hawaii, 

 147-198 fms., July 11, 1902. 



USNM 27378 (2 alcohol), Albatross Sta. 3885, see above. 



USNM 27379 (5 alcohol), Albatross Sta. 4045, see above. 



USNM 27441 (2 alcohol). Albatross sta. 3859, see above. 



USNM 27442 (3 alcohol), Albatross Sta. 3863, see above. 



MCZ 140 (2 dry). Albatross Sta. 4100, Pailolo Channel, between Maui 

 and Molokai, Hawaii, 130 fms., July 23, 1902. 



MCZ 144 (3 dry). Albatross Sta. 3885, see above. 



MCZ 57 (1 alcohol). Albatross Sta. 3882, Pailolo Channel, between 

 Maui and Molokai, Hawaii, 136 fms., Apr. 16, 1902. 



MCZ 58 (1 alcohol). Albatross Sta. 3886, same as 3885. 



Dorocidaris panamensis A. Agassiz 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 32, 

 p. 73, pis. 1, 2, 1898. 



= Hesperocidaris panamensis (Agassiz)--see Mortensen's Monograph 

 of the Echinoidea, vol. 1 p. 416. 



Syntypes: 



MCZ 327 (4 dry). Albatross Sta. 3368, off Panama, 66 fms., Feb. 28, 

 1891. 



MCZ 328 (1 dry), Albatross Sta. 3367, off Panama, 100 fms., Feb. 28, 

 1891. 



MCZ 58 (2 ?i\coho\). Albatross Sta. 3378, off Panama, 112 fms., Mar. 

 5, 1891. 



Dorocidaris rugosa H. L. Clark 



Bulletin of the Museum of Comparative Zoology at Harvard, vol. 51, 

 no. 7, p. 210, pis. 4, 5; pi. 7, figs. 5-8, 1907. 



= Cidaris rugosa (Clark) — see Mortensen's Monograph of the Echi- 

 noidea, vol. 1, p. 305. 



Lectotype (Mortensen, ibid., p. 305): 



MCZ 166 (dry), off Georgia, 229 fms. Blake collection. 



