Ven'ill, JVotes on Radiata. 551 



but some of the forms might be mistaken for a coarse variety of the 

 latter. The spicula are, however, very different from both those 

 species, which have spicula remarkable for their short stout forms, 

 with bluntly rounded ends and crowded warts. 



The slender variety resenibles, in the size of the meshes and brancli- 

 lets, L. eximia, but the latter has entirely different spicula, remark- 

 able for the distant and elongated Avarts. 



Leptogorgia tenuis, sp. nov. 



Corallum flabelliform, consisting of very slender branches and 

 branchlets, which are loosely reticulated, many of the branchlets be- 

 sides the terminal ones, remaining free. The meshes are generally 

 about a quarter of an inch wide, and vary in length from a quarter of 

 an inch to nearly an inch. The larger branches are roundish with dis- 

 tant, scattered, relatively large, subconical, prominent verrucse, which 

 form about four irregular rows. The terminal branchlets are very 

 slender, with the conspicuous, conical verrucre alternating in a single 

 row on each edge ; the tips enlarged and flattened, terminated by two 

 verrucas. Coenenchyma thin, firm, finely granulous. Axis blackish. 



Color bright light red, uniform througliout. The spicula are light 

 red and yellowish, and are quite regularly fusiform. The longer 

 double-spindles are slender and very acute, with a well defined median 

 space, bordered by large wreaths of short rough warts, beyond which 

 there are three or four whorls of smaller warts, diminishing gradually 

 to the ends, where they blend with the acute terminal ones. The 

 stouter double-spindles are similar in form and structure and only a 

 little less acute, with the warts more crowded. There are a few mi- 

 nute spicula, with a wide median space and a single whorl and termi. 

 nal cluster of warts on each end. The polyp-spicula are light pink 

 slender, with a few low blunt denticulations on one or both sides. 



The longer double-spindles measure -ISS"'"' by -042'"'", -132 by 

 •042, -120 by '036, -108 by -036; the stouter double-spindles are 

 •138 by -048, •126 by '048, -120 by .054, -120 by '048, '108 by -048, 

 •090 by -048. 



La Paz, on base of Eagorgia nohilis^ var. excelsa, in from 4 to 6 

 fathoms, — J. Pedersen. One specimen. 



Externally this species most resembles i. eximia, though the 

 branchlets are more slender and the verrucas fewer and larger. The 

 spicula are entirely different, being more regularly fusiform and acute, 

 with much less prominent and more numerous warts. They resemble 

 those of X. Adamsii more than those of any other species, but are 



Trans. Connecticut Acad., Vol. I. 67 Dec, 1870. 



