22 



NATURAL HISTORY BULLETIN 



photograph was included in those recently sent you You 



will see that the prominent primary spines are not smooth but 

 jagged, with thorn-like processes. I remember very well the 

 color of this specimen when fresh and it was that of the true 

 P. sharreri. Had it exhibited the 'exquisitely tinted pink and 

 apple-green' that you speak of*, I am sure I would have noted 

 it." The photograph sent me shows that this specimen has 

 much more slender spines than the individual figured in the 

 Blake report but many of them flare and are fluted at the 

 tip in characteristic fashion. The measurements of the specimen 

 are approximately 60 mm. in test diameter, nearly 50 mm. in 

 height, and 155 mm. in length of longest spine. 



There can be no doubt then of the occurrence of this fine 

 species off Havana, as well as off Georgia and off Barbados. 

 There is no specimen in the series sent to me. 



Salenia pattersoni 



A. Agassiz, 1878. Bull. M. C. Z., 5, p. 187. 1883, BlaTce Ech., pi. V. 



Plate V 



There are 12 specimens of this lovely sea-urchin taken on the 

 Pentacrinus grounds, off Havana, but there is no label showing 

 the exact station or depth. In the "Narrative" (p. 82) Profes- 

 sor Nutting says this ''species, with spines banded with vermil- 

 ion and white, is rendered still more attractive by bands of 

 deep violet following the ambulacral furrows and outlining the 

 plates of the apical system, the ground color being a dove or 

 cream color." 



Arbacia punctulata 



EcMnus punctulatus Lamarck, 1816." Anim. s. Vert., Ill, p. 47. 

 Artacia punctulata Gray, 1835. Proc. Zool. Soc. London, p. 38. A 

 Agassiz, 1872. Eev. Ech., pi. II, fig. 4. 



In the "Narrative" (p. 98), in speaking of the sea-urchins 

 found at Bahia Honda, Cuba, Professor Nutting says: ^'Arhacia 

 punctulata was the only other echinoid found here in abun- 

 dance." This is remarkably interesting for the genus was not 



*The colors in part of Calocidaris micans. 



