Verrill, Notes on Radiata. 417 



with acute ends, but equally rough. Some liead-like spicula are about 

 as long as broad, sometimes nearly spherical, crowdedly covered with 

 large, thorny warts, those about the middle largest. There are also 

 short, stout s|)indles, crowdedly covered with warts on the whole sur- 

 face. Club-shaped spicula occasionally occur, having the larger end 

 but little expanded, covered with large, prominent, thorny warts ; 

 these with the two preceding forms chiefly compose the external layer. 

 Cross-spicula, with four or six roughly warted branches, frequently 

 occur. Besides these, there are many small spicula of various forms, 

 but all are covered with rough warts, and most of them are short and 

 stout. Polyp-spindles are long, slender, acute, usually curved, cov- 

 ered with small, sharp warts. 



The longer spindles measiire •192'""' by '084'""', -174 by -078, -168 by 

 •090, -168 by '048, -144 by -066, '132 by -072 ; stouter spindles -156 

 by -096, -132 by -090, '132 by '078, -120 by -096 ; warty head-spicula 

 •168 by -096, -144 by '120, -144 by -090, -108 by -OOG ; clubs -132 by 

 •072, -120 by -060 ; crosses '144 by -096, '120 by "084; polyp-spindles 

 •264 by -054, '227 by -048, -204 by -036, -198 by -048. 



Pearl Islands, in 6 to 8 fathoms, rare, — F. H. Bradley. 



Resembles somewhat var. Dowii of the preceding species, but is 

 much larger, with stouter branches and branchlets, and larger and 

 more distant cells. The surface is smoother and tlie cells are usually 

 not at all raised. The color is also brighter red. The spicula are 

 quite different. 



Psammogorgia fucosa Veniii. 



Amer. Journal Science, xlviii, p. 427, Xov., 1869. 

 Go rgonia fucosa Val., Voyage Venus, PI. 15 bis. 

 Pkxaura fucosa Val. ; Edw. and H., Corall., i, p. 154, {^aon Verrill). 

 Mazatlan. — Voyage of the Venus. A large species allied to P. 

 teres. — Reprint. 



Psammogorgia gracilis Vcn-iii, sp. nov. 



Plate V, figure 1 9. Plate VI, figure 1 0. 



Corallum slender, flabelliform, the branchlets subparallel and elon- 

 gated. Tlie stem, in the only specimen seen, is slender, and at the 

 height of about an inch subdivides into four main branches, one of 

 which then passes onward, like a continuation of the stem, undivided 

 for nearly ] '5 inches, when it gives off branchlets pinnately on each 

 side, at distances of from "10 to '40. Two of the other main branches 

 subdivide near their origin into several long, slender, ascending 

 branches and branchlets, some of wliicli fork near their ends. The 

 branchlets are all about equal in size, varying in length from less than 



