104 THE PLUMULARID^:. 



approximated, obconic, considerably expanded above, margin with a large horn-like anterior 

 process or tooth, which, when fully developed, is almost as long as the hydrotheca and recurved 

 at its distal portion. Above the base of the process there is a retrorse tooth, and there are four 

 marginal teeth on each side; iutrathecal ridge low at its origin, doubly curved, reaching around 

 the hydrotheca to a level with the base of the anterior process; supracalyciue nematophores 

 tubular, reaching the level of the top of the hydrotheca; mesial uematophore rather short and 

 spur-like, free portion tubular, its end not reaching the level of the middle of the hydrotheca; 

 cauline uematophores inconspicuous. 



Gonosome. Corbulte very long and slender, composed of about twenty pairs of leaves, each 

 of which has au expanded truncated process pointing forward and outward, arising from above 

 the base of the leaf; a row of nematophores is situated on the top of tlie proce s and distal edge 

 of the leaf. There are three hydrotheca- between the corbula and the stem. 



Distribution. Off Martinique, 96 fathoms, lihd-e collection. 



This very striking form reminds one of species found in the Pacific in the shape of the hydro- 

 theca^, and especially in the shape and arrangement of the marginal teeth. The anterior process 

 is exceedingly variable in size. The corbula is very slender, but of firm texture and a dark horn 

 color. It resembles the "arborea group" in having more than one hydrotheca on its pedicel. 



Type. In the Museum of Comparative Zoology, Cambridge, Massachusetts. 



AGLAOPHENIA PATAGONICA (d'Orbigny. i 



PliimulariapatagonicaD'ORBlGKY, Voyage dans 1'Ame'rique Meridionals, 1839-46, V, p. 27, pi. xin, figs. 3-6. 

 Aglaophonia patagonica KIRCHENPAUEK, Ueber die Hydroidenfaniilk- Plumularida-, I't. 1, ]>. 26. 



I have been unable to find any description of this species but the original, which is herewith 

 given. 

 P. surciilis ramosis, flexnoiis; ramis nlternis pinnatis; ceUulii complicatis; resicuJis i-loni/utis, compressis, transvwsim 



obUijui' cristatis. 



Habitat. The shores of Patagonia. 



Cette jolie espece forme des branches longues, terminees par un grand noinbre de rameaux 

 arque"s penuiformes. Chaque rameau porte des raniules alternes assez eteudus. Les ramules sont 

 divise's en segmens nombreux, trois par cellules, dout la partie superieure est terminee en pointe 

 exterieure. Les cellules sout composees d'nn support lateral de chaque cote qui en occupe route 

 la longueur, d'uu autre support inferieur termiue en pointe tronqu< ; e. Les bords out deux expan- 

 sions laterales, et en dessus qnatre sinus et trois pointes. Les vesicules sout allougees, comprimees, 

 dentees obliquemeut et lateraleinent. 



AGLAOPHENIA (?) CRENATA Fewkes. 

 (Plato XXIII, figs. 9, 10.) 



Aglaoplienia crenata FKWKES, Bull. Mus. Comp. Zool., 1881, VIII, No. 7, p. 132. 



Trophosome.* Colony in fragmentary specimen unbrauched and attaining a height of about 

 2 inches; stem fascicled in proximal portion and not fascicled distally, divided into internodes, 

 each of which bears a hydrocladium; hydrocladia not closely approximated, borne on opposite 

 sides of the stem, and divided into regular interuodes, each of which has about five septal ridges 

 behind the hydrotheca and three on the anterior side below the hydrotheca. Hydrotheca 1 rather 

 deep, cylindrical, anterior profile nearly straight, margin armed with ten or twelve regular, minute 

 teeth or sinuations; intrathecal ridge not evident; supracalycine nematophores small, distally 

 contracted, reaching the level of the top of the hydrotheca; mesial uematophore short, tubular, 

 with its distal end free and its margin creuulated; cauline nematophores with distal portion 

 contracted, two to four on the front of each interuode of the stem, and one behind the axil of 

 each hydrocladium. 



Gonoxomc. Not known. 



Distribution. Blal;e Station 308, lat. N. 41 25', long. W. 65 35'; depth, 1,242 fathoms. 



This species is almost certainly not an Aglaophenia, and in all probability is a Cladocarpus or 



1 Description of Doctor Fewkes's typo specimen. 



