50 Messrs. T. and A. Scott on some 



black spot at the anal angle. Head, thorax, and tegulte 

 silvery grey ; antennae yellowish brown ; abdomen greyish 

 fawn-colour ; legs grey. 



Expanse 2^ inches. 



Hah. Costa Rica. 



Nysfalea samhana, pp. n. 



Female. — Primaries dusky grey, with several reddish-brown 

 spots at the apex ; a black curved line crosses the wing near 

 the base from the costal to the inner margin ; a large silvery- 

 grey patch at the anal angle, extending partly along the inner 

 margin : secondaries pale grey, broadly bordered from the 

 apex to the anal angle by darker grey ; the fringe silvery 

 grey. Ths head, collar, and tegulaj yellowish brown ; thorax 

 silvery grey ; abdomen dusky grey ; underside pale grey ; 

 anus yellowish brown. 



Expanse 2| inches. 



Ilab. Costa Rica. 



Nystalea demea^ sp. n. 



Male. — Primaries greyish fawn-colour; two small black 

 dots at the end of the cell, from which a black line bordered 

 with reddish brown and with a small white streak in the 

 middle extends to the outer margin ; a dark brown spot and 

 streak on the inner margin close to the base; several faint 

 brown marks near the anal angle : secondaries dusky fawn- 

 colour, darkest at the apex and round the outer margin ; the 

 fringe pale greyish fawn-colour. The head and front of the 

 thorax reddish brown ; antenna? yellowish brown ; tegulai and 

 thorax greyish fawn-colour ; the base of the abdomen yel- 

 lowish, the upperside of the abdomen blackish grey, underside 

 paler ; the anal tuft greyish fawn-colour. — Female very similar 

 to the male, but larger and rather darker in colour. 



Expanse, (J 2^, ? o inches. 



Hab. Costa Rica. 



VIT. — On some new and rare Crustacea from Scotland. By 

 Thomas Scott, F.L.S., Naturalist to the Fishery Board 

 for Scotland, and Andrew Scott, Fisheries Assistant, 

 University College, Liverpool. 



[Plates V. & VI.] 



In the following notes we propose to record some interesting 

 Scotch species of Copepoda, including, among others, a few 

 that appear to be undescribed, and also a curious form 



