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have however a slight scale. The gastropores are round or oval and have a diameter of 
0,3 mm.; the style grows to a great size in old pores. The gastrozooid has four or five tentacles. 
The ampullae are large and prominent and often bear ridges in addition to the verrucae of the 
dactylozooids. The female ampullae are 1,2 mm. in diameter. No male specimens were observed. 
This species seems to be most closely allied to 4. carzzata (Pourtales), but the latter 
is distinguished by having all the gastropores on one surface. 
The species may be defined, 
Hydrophytum subflabellate, ramose; gastropores in the angles of the branches without 
a scale, less frequently on the surface with a slight scale; dactylozooids scattered, forming 
prominent verrucae. 
Distichopora Lamarck. 
1. Distichopora violacea Milne Edwards and Haime. 
MILNE EDWARDS and HAIME. Hist. Nat. des Cor. V, III, p. 451. 
Stat. 152. N.W. of Waigeu Isl. Dredge and reef exploration. Up to 32 M. 1 Ex. 
A young colony 17 mm. high, growing in two parallel flabella. The colour is violet, 
white towards the apices of the branches. 
Cryptohelia Milne Edwards and Haime. 
MILNE EDWARDs and HaiME. Hist. Nat. des Coral, p. 127. 
MOSELEY. Chal. Zool. Vol. II, p. 98. 
The genus may be defined as follows: Coenosteum arborescent, flabelliform. Pores in 
regular cyclosystems only; cyclosystems turned towards one surface of the flabellum; styles 
absent in gastropore and dactylopore; gastropore divided into two chambers, upper and lower; 
the opening between the two is circular. Gastrozooids without tentacles; dactylozooid partially 
retractile only. Ampullae in connexion with the cyclosystems, usually prominent; several female 
and numerous male gonophores in each ampulla; the male gonophore without a spadix: Sterrula 
larva long and vermiform. 
Cryptohelia is a deep sea genus of wide distribution. The following are the depths at 
which it has been found: 
C. pudica Milne Edwards and Haime. Depth? 
C. pudica from the Siboga Collection. 1300—1633 M. 
C. moseleyt (C. pudica Moseley, specimen figured). 1525 fms. (== 2745 SIE: 
C. prercee Pourtales. 267—600 fms. (= 471—1050 M.). 
C. japonica (Lndohelia japonica M. E. & H.). Depth ? 
The Siboga new species are: 
C. ramosa 1165—1264 M. C. balia 1300—1633 M. 
C. pachypoma 1089 
C. platypoma 469 
C. stenopoma 1300—1633 , 
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