100 AMERICAN HYUROIDS. 



AGLAOPHENIA (?) SAVIGNYANA Kirchenpauer. 

 (Plate XXIV, fig. 4.) 



Jglaophenia saingnyana KIRCHENPAUER, Uober die Hydroidenfamilie Plumiilari<l:i-, 1872, Pt. 1, p. 44. 

 Aglaophenia sawgnyana MARKTANNER-TURNERETSCUER, Hydroiden desk. k. iiaturhist. lIol'niiiH., 1890, p. 'Ml, pi. vi, 

 tig. 13. 



Trophosome. Colony irregularly branched, branches and brauchlets sparse, attaining a height 

 of 2 or 3 inches; stein fascicled; internodes indistinct, each bearing a hydrocladium on a process 

 from near its distal end; hydrocladia short, divided into regular internodes, each of which has 

 two delicate septal ridges, one opposite the base of the hydrotheca and another under the supra- 

 calycine nematophore, the latter sometimes scarcely discernible. Hydrotheca- cup shaped, with 

 the aperture vertical, margin with a conspicuous lateral tooth on eacli side; supracalycine nemato- 

 phores tubular, overtopping the hydrotheca; mesial nematophore long, tubular, attaining the level 

 of the marginal teeth and having two apertures; cauline nematophores one above and one below 

 the base of each hydrocladium on the branches, and arranged nearly in a row on the stem. 



Gonosome. Not known. 



Distribution. Adriatic Sea and Red Sea (Kirchenpauer); Dayti (Marktanner-Turneretscher). 



I have not seen this species, and the above description is compiled from those of Kirchenpauer 

 and Marktauuer-Turneretscher, together with the figure given by the former. It is almost certain 

 that the species is not an Aglaophenia in the sense used in this work, but in the absence of the 

 gonosome it is probably best to leave it where it is. 



AGLAOPHENIA ALLMANI Nutting. 



(Plate XXII, figs. 2, 3.) 

 Aglaophenia ramosit ALI.MAN,' Mem. Mils. Comp. /ool., V, No. 2, 1877, p. 3! I, pi. XMII. 



Trophosome. Colony branched, the branches breaking up into ramuli, which may again 

 divide, attaining a height of about G inches; stem fascicled; hydrocladia borne on the front of main 

 stem above the origin of the branches, and throughout the length of the latter; each internode 

 bears a hydrotheca and shows'a very strong internal ridge or septum extending clear around the 

 cavity of the interuode on a level with the iutrathecal ridge of the hydrotheca. Hydrotheca^ deep 

 for this genus; margin with seven strong even teeth; the aperture inclined a little forward; intra- 

 thccal ridge pronounced, extending obliquely forward and upward, dividing the lower one-fourth 

 from the remainder of the hydrotheca; supracalycine nematophores strong, almost cylindrical, 

 reaching considerably above the margin of the hydrotheca; mesial nematophore actuate to the 

 front of the hydrotheca, and reaching the level of the marginal teeth; there is a small perforated 

 prominence at the base of each hydrocladium, and two large triangular cauline nematophores near 

 the base of each hydrocladium. 



Gonosome. Not known. 



Distribution. Florida Reef, 2 to 3 fathoms (Allinan); Albtttroxx Station 2142, Lit. X. 9 30', 

 long. W. 76 20'; 42 fathoms. 



The general facies of the trophosome, together with the shape of the cauline nematophores, 

 stroTigly suggest that this species will ultimately find a place in the genus Lylociirpux. It seems 

 to be rare, as only one specimen was obtained in the great number of hauls made by the Albntroas. 



AGLAOPHENIA ROBUSTA Fewkes. 

 Aylaoi/lteiiia robusln FEWKES, Bull. Mus. Comp. /ool., VIII, No. 7, 18S1, p. 132. 



This species has a very large, thick, fascicled hydrosome, which is branching, and gives rise 

 to alternate piuuii'. Ilydrothecii-, with very large teeth on the margin. Mesial uernatophore large, 

 aduate, almost as long as the hydrotheca is deep. Supracalycine nematophores rising slightly 

 above the rim of the hydrotheca. Color of hydrosome bright yellow and brown. 



'The name Aglaophenia ramosa was used by Busk iii his account of the Zoophytes of the Battlesnake, and 

 repeated by Kirchenpauer in 1876. 



