REPORT ON PHILIPPINE HYDROIDA 227 



above the bases of these supports is another pair of nematophores 

 which are practically sessile on the hydrocladium. Between these 

 and the bottom of the next hydrotheca above are usually two and 

 occasionally three pairs of cauline nematophores, thus making four 

 or five pairs of nematophores to each hydrotheca. The nemato- 

 phores are all two-chambered after the usual eleutheroplean type. 



Gonosome. — Not present. 



Locality. — Davao Bay, borne on pearl-oyster shells, depth not 

 given. 



Holotype.— Cat. No. 42182, U.S.N.M. 



This very remarkable species may eventually require a new genus 

 for its reception, but the writer desires to avoid the establishing of 

 new genera whenever practicable, especially where the gonosome is 

 not known. 



ANTENNELLA RECTA, new sp«cies 



Plate 44, figs. 6, 7 



Trophosome. — Colony consisting of hydrocladia springing directly 

 from a creeping root-stalk, 16 mm. in height. Hydrocladia divided 

 very obscurely into internodes, each of which bears a hydrotheca. 

 Nodes not oblique but at right angles to the axis of the hydrocladium. 

 Occasionally there is an oblique node just below the proximal 

 hydrotheca. Hydrothecae separated by twice their height, bell- 

 shaped with margins slightly flaring, height equal to the diameter 

 of the aperture. Nematophores — supracalycine pair borne on proc- 

 esses from the hydrocladium nearly opposite the aperture of the 

 hydrothecae and considerably overtopping the latter. There is a 

 mesial nematophore just at the base of the hydrotheca and one or 

 two others between this and the next hydrotheca below. 



Gonosome. — Not known. 



Locality. — Dredging station 5310, China Sea, vicinity of Hong- 

 kong, 21° 33' N., 110° 13' E.; depth, 100 fathoms. 

 . Holotype.— Cat. No. 42188, U.S.N.M. 



This species differs from all others of the genus except P. micro- 

 seopica (Mulder and Trebilcock) 25 in having no intermediate inter- 

 nodes and nodes straight and not oblique. 



According to the figure given by the authors the hydrotheca of P. 

 microscopica is tubular and more than twice as deep as broad. 



NEMERTESIA CYLINDRICA (Bale) 



Antennularia cylindrica Bale, Australian Hydroid Zoophytes, 1884, p. 146, 

 pi. 10, fig. 7. 



The specimens collected by the Albatross agree very well with the 

 description and figures given by Bale. In the former, however, the 



25 Geelong Naturalist, vol. 4, ser. 2, 1909 (pages not numbered in reprint), pi. 1. fig. 4. 



