of the Fishery Board for Scotland. 
279 
Order II. — LeptomeduSjE. 
Thaumantias hemisphoerica (Gronovius), 0. F. Miiller. 
Mid-Water-Net. 
First appearance. — 12th June 1888, numerous. 
Last appearance. — 5th December. 
Most plentiful. — In June, July, August, and September found very 
frequently in large numbers, often in swarms. From 17th October 
to 5th December none occurred ; only 2 or 3 procured on latter 
date. Mature forms very frequent from 23rd June to 28th 
September, and at that time very large, e.g., f inch. 
Bottom-and Surface-Tow-Nets. 
This species of Thaumantias also occurred frequently in these nets, 
especially in the latter. 
Thaumantias melanops, Forbes. 
Mid- Water-Net. 
First appearance.— -1 1th May. 
Last appearance. — 8th August, off Fife Ness, and 4th August, in St 
Andrews Bay. 
Most plentiful.- — In June and July. Appeared in myriads on 20th and 
25th July. Procured frequently during the period mentioned. ( 
Bottom and Surface-Tow-Nets. 
This species was found two or three times in these nets. 
Thaumantias inconspicua, Forbes. 
Mid- Water-Net. 
A few times in June and August. Many in former month, mature and 
immature. 
Laodice cruciata (Thaumantias pilosella, Forbes). 
Mid- Water-Net. 
First appearance. — 11th May. 
Last appearance. — 17th October. 
Most plentiful. — In May and June. On 25 th June specimens procured 
were not quite ripe, on 18th July, mature, and on 26th September, 
immature. Met with occasionally almost 1 inch in diameter. 
Bottom-and Surface-Tow-Nets. 
This species was found occasionally in these nets. 
Obelia dichotoma L. (Gonozoids). 
Bottom-Tow-Net. 
First appearance. — 18th July. 
Last appearance. — 17th August. 
Most plentiful. — In July, found a few times, and once or twice obtained 
in August. 
Surface- Tow-Net. 
First appearance. — 18th July. 
Last appearance. — 30th August, only on these two occasions. 
Phialidium variabile, Hseckel. 
Var. globosa and var. sarnica, Forbes, found frequently in great 
