014 ECHINANTHUS. 



ECHINANTHUS. 



Eohinanthus Breyn., 17.J2, Schediasm. (emend.) 

 (See Part II. p. 310.) 



Echinanthus rosaceus 



Ecliin us rosaceus Linn., 1758, Syst. Nat. 

 ! Echinanthus rosaci us (iitAY, 1825, Ann. Phil., p. 5.* 

 (See Part II. p. 311.) 



PL XP.; PL XI'. f. i-:r, PL XT', f. i-is; PL XIIT. f. 9; PL XXV. f. 

 >.; ; PL XXVII. f. e; PL XXVIII. f. 1,2; PL XXXVII. f. 0, 11. 



West India Islands ; Florida. 



Echinanthus testudinarius 



! Echinanthus testudinarius Gray, 1851, Proc. Zobl. Soe. Lond., p. 35. 



Although the original specimens of Gray were erroneously mentioned by 

 him as having been collected at Borneo by Captain Belcher, yet this species 

 is also found in Australia, Sandwich Islands, and the Red Sea ; it has been 

 described by Michelin as a new species, and subsequently again by Verrill, 

 from specimens collected in the Gulf of California. It has also been col- 

 lected in Japan by Dall. The specimens contained in the different museums 

 from these various localities vary but little in general aspect, the petaliferous 

 part of the test being only more or less raised ; the edges also are somewhat 

 swollen, not arching as regularly as in the majority of the specimens ex- 

 amined. There is in this species far less variation in the outline, both in 

 profile and from above, than in the common E. rosaceus. which is one of the 

 most variable of Clypeastroids. When examined from the actinal side, we 

 find a greater range in the flatness of the actinal part of the test. In some 

 cases the actinal floor is nearly Hat. the test near the actinostome sinks 

 rapidly, and the mouth is situated in a deep cavity, while in other speci- 

 mens the actinal part of the test slopes quite gradually from the t'i}i>:e of 

 the test to the actinostome. The uniformity in the general aspect of the 

 petals is much greater than in the eastern coast Echinanthus, although, as in 

 all Clypeastroids, there is a certain variation in the terminal part of the petals : 

 this is by no means as great as in E. rosaceus ; the outer extremity widens 

 but little, and is frequently nearly closed by the pores. The position of the 



• On p. 311, 13th line from top, for Lam. 181C read Lam. 1801. 



