MARINE INVERTEBRATE FAUNA OF IRELAND. 7 
Dalkey, and off Bray Head in twenty-three fathoms; Cylista 
undata, Mull., Monkstown and Dalkey. One or two specimens 
of the parasitic Medusa, *Halcampa fultoni, T. S. Wr., were 
found on species of Thaumantias. Several stages of develop- 
ment were observed, and this parasite will probably prove to 
be the larval form of Halcampa chrysanthellum. Caryophyllia 
borealis, Flem., var. esmeralda, was found at Dalkey by Mr. H. 
W. Jacob. 
The following Vermes are recorded :—*Planaria ulve, Oerst. ; 
*Tetrastemma dorsalis, Abildg. ; *T'’. candida, Mull. ; *T'. flavida, 
Ehr.; Lineus marinus, Mont. ; Amphiporus lactifloreus, Johust. ; 
Tomopteris scolopendra, Q. & G.; Sagitta bipunctata, Krohn ; 
Pedicellina cernua, Pall.; Bowerbankia imbricata, Ad. (sessile 
form); *B. caudata, Hincks; *Diastopora obelia, Johnst. ?; 
*Scrupocellaria scrupea, Busk ; and *Aftea truncata, Landsb. 
The Mollusca are :—Holis drummondi,-Thomp., *E. lineata, 
Loy., *H. despecta, Johnst., *E. exigua, A. & H.; all from 
Kingstown. Proctonotus mucroniferus, A. & H. This last 
species was discovered by Alder and Hancock at Malahide in 
September, 1843, and now again in the same place in September, 
1885. The only other recorded locality is Lamlash Bay in 
1881 (Herdman). Also Polycera quadrilineata, Miller, Eledone 
cirrhosa, Lam., and others. 
Of the Echinodermata, EHchinocyamus angulatus, Leske 
(= FE. pusillus), off Bray Head in twenty-three fathoms, and 
Synapta inherens, Miull., found by Messrs. Jacob and Dixon at 
Malahide, are the only forms not previously recorded for Co. 
Dublin. (Since writing the paper here quoted I have learned 
that Dr. Kinahan found several specimens of S. inherens at 
Sutton, Co. Dublin, about the year 1860, and he exhibited them, 
with mounted specimens of the skin, at the Dublin Microscopical 
Club at the time. I have recently seen a slide of the latter, and 
can vouch for the identification being correct, but, so far as I 
can learn, no record was made of it at the time or since.— 
SU. He] 
All the specimens marked with an asterisk *, so far as can 
be discovered, have not before been recorded as occurring in 
Treland. 
