224 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



PLUMULARIA HARGITTI, new species 



Plate 44, figs. 1, 2 



Trophosmne. — Colony 4}/ 2 cm. high and with a spread of 1 cm., 

 main stem not fascicled, straight with irregularly disposed straight 

 nodes and bearing neither hydrothecae nor nematophores. Hydro- 

 cladia alternate and closely approximated, borne on distinct shoul- 

 ders of the stem and projecting from the stem at an angle of about 

 45°, divided into alternating hydrothecate and intermediate inter- 

 nodes which are divided by alternating straight and oblique nodes, 

 the latter being just below the hydrothecae and the former just 

 opposite the tops of the hydrothecae. Hydrothecae large for this 

 group, rather deep, cup-shaped, with slightly everted margins, one 

 and one-half times as deep as wide, and separated by a distance of 

 about one and one-half thnes their height. Nematophores small, 

 the supracalycine pair being inserted on the hydrocladium some 

 distance below the free distal part of the hydrotheca and not attain- 

 ing to the level of the point where the latter separates from the 

 branch. There are usually two, rarely three, mesial nematophores 

 between the adjacent hydrothecae. The one immediately below each 

 hydrotheca is somewhat stouter than the others. 



Gonosome. — Gonangia large, elongated saclike structures with 

 rounded distal ends, about six times the height of the l^drothecae 

 and with a short pedicel. There are two to four nematophores borne 

 on the gonangium just above the pedicel. 



Locality. — Dredging station 5174, vicinity of Jolo, Jolo Light, 

 6° 3' 45" N., 120° 57' E.; depth, 20 fathoms. 



Eolotype.— Cat, No. 42180, U.S.N.M. 



This species is named in honor of my friend, Dr. Charles W. 

 Hargitt, of Syracuse University, who has done much valuable 

 morphological and experimental work on the hydroids. It evidently 

 belongs to the catharina group but differs from that species in 

 having alternate and more nearly approximated hydrocladia and 

 hydrothecae and in shape and size of gonangia. It differs from 

 P. aglaophenoides Bale in having a fascicled stem and in several 

 other details. 



PLUMULARIA DENDRITICA Nutting 



Plumularia dendritica, Nutting, American Hydroids, pt. 1, p. 67, pi. 8, figs. 4-6. 



The specimens dredged by the Albatross during her Philippine 

 cruise agree very exactly with the original descriptions and figures, 

 and a comparison with the type specimen in the museum of the State 

 University of Iowa confirms this view. 



Localities. — Dredging station 5163, Sulu Archipelago, Tawi Tawi 

 group, Observation Island, 4° 59' 10" N., 119° 51' E.; depth, 28 



