ERYLUS ROTUNDUS. 



307 



tion of smooth discs with more or less continuous margin (Plate 7, figs. 22, 23). 

 On the whole of the surface, the margin as well as the faces, of the disc, small 

 excrescences then make their appearance, and these grow out to form the pro- 

 tuberances above described. 



LOCALITIES AND NATURE OF ENVIRONMENT. 



VAR. MEGAIIHABDA LENDENFELD. 



No. of 

 Station 



Locality 



Date 



Depth 



Bottom 

 tempera- 

 ture 



Bottom 



No. of 

 specimens 



3849 



S. coast of Molokai, Lae-o 

 Ka Laau Li^lit. N. 71°, 

 W. 21.9'. 



April 8, 1902 



133-78 m. 

 (73-43 f.) 



19.8° 

 (67.6° F.) 



Coarse sand, 

 broken shells, 

 and corals 



2 



Form A 



3982 



Vicinity of Kauai Island, 

 Nawiliwili Light. N. 68°, 

 W. 1.6'. 



.June 10, 1902 



426-73 m. 

 (233-40 f.) 



9.2° 

 (48.5° F.) 



Coarse brown 

 corals, santl, 

 sliells. 



1 



Form \i 



VAR. TYPICA LENDENFELD. 



No. of 

 Station j 



Locality 



Date 



Depth 



Bottom 

 tempera- 

 ture 



Bottom 



No. of 



specimens 



3849 



8. coast of Molokai, Lao-o 

 Ka Laau Light. N. 71°, 

 W. 21.9'. 



April 8, 1902 



1.33-78 m. 

 (73-43 f.) 



19.8° 

 (67.6° F.) 



Coarse sand, 

 broken shells, 

 corals 



4 



Form A 



4024 



Vicinity of Kauai Island, 

 Mokuaeae Islet. S. 83°, K. 

 7.6'. 



June 23, 1902 



44-79 rn. 

 (24-43 f.) 



2.3 2° 

 (73.7° F.) 



('oarse coral, 

 sand, and Fo- 

 raininifera 



3 



Form B 



4061 



N. E. coast of Hawaii, 

 Kauhnla Light. S. 79°, 

 E. 6.7'. 



July IS, 1902 



44-1. -)2 m. 

 (24 -83 f.) 





Corals, sand, 

 corallin(> nod- 

 ules, and Fo- 

 raminifera 



1 



l'\)rm 1) 



4128 



Vicinity of Kauai Island, 

 Hananiaulii Warelioiise. 

 N. 44° 30', W. 2.6'. 



August 1, 1902 



16,5 327 ni. 



(253-68-90- 

 179 f.) 



8.8° 

 (47.8° F.) 



Coarse brown 

 coral, sand, and 

 Foraminifera. 



1 



Form C 



VAR. CIDARIS LI'.NDENFELD. 



o o 

 6 



3849 



Locality 



Date 



Depth 



Bottom 

 tempera- 

 ture 



Bottom 



No. of 



specimens 



H. coast of Molokai, Lae-o 

 Ka Laau Light. N. 71°, 

 W. 21.9'. 



April 8, 1902 



133-78 ni. 

 (73-43 f.) 



19.8° 

 (67 6° F.) 



Coarse sand, 

 broken shells, 

 and corals. 



1 



