48 
A. endozoicum, Batt. Rare. (See note 13, p. 114.) 
Fig.: Plate XIII, 34, 40. 
District: Port Erin. 
Zone: L.W.O.S.T. 
Occurrence: Sporadic. 
Reproduction : Monospores in Spring. 
Notes: Parasitic in Alcyomdium hirsutum on Delesseria alata ; 
recorded March, 1931. Previous record by Professor 
Darbyshire in April, 1902. In the latter case the 
Alcyomdium was on Phycodrys rubens. 
A. virgatulum, J. Ag. Not uncommon. 
Fig.: Harvey III, 279 [as Callithamnion virgatulum]. 
District: Port Erin; Port St. Mary; Douglas Bay (Brady, Talbot). 
Zone: H.W.O.N.T. to M.T. in pools. 
Occurrence: Sporadic. | 
Reproduction : Monospores and tetraspores from January to March. | 
Notes: Appears spasmodically covering everything within a very 
short time. Cystocarpia and antheridia not recorded for 
this area. 
A. Daviesu, Nag. 
Fig.: Harvey III, 278 [as Callithamnion Daviesit]. 
District: Port St. Mary; Douglas Bay (Mrs. Gatty). 
Notes: Recorded by R. J. Harvey-Gibson. No data available. 
Gen. Nemalion, Targioni-Tozzetti. 
N. multifidum, J. Ag. Not common. 
Fig.: Harvey III, 218. 
District: Port St. Mary; Peel. 
Zone: M.T. zone. 
Occurrence: Annual, Summer, 
Reproduction: Spermatia and Cystocarpia in July and August. 
Notes: Found attached to limpet shells in pools. Appears 
sporadically. 
Gen. Helminthocladia, J.Ag. 
H. purpurea, J. Ag. Rare. 
Fig.: Harvey III, 219 [as Nemalion ? purpureum]. 
District: Port Erin; Peel; Douglas Bay (Talbot). 
Zone: L.W.O.N.T. to L.W.O.S.T. 
Occurrence: Annual, Summer. 
Reproduction : Summer. 
Notes: Occasional in Port Erin Bay in Summer; large quantity 
found at Peel in 1913. 
Gen. Helminthora, J.Ag. 
H. divaricata, J. Ag. 
Fig.: Hauck, p. 58. 
District: Port St. Mary. 
Notes: Single record; cast up in Summer. 
a ts 
