300 REPORT—1868. 
p- 55, pl. ix. fig. 12. In the branchial sac and water-passages of Ascidia 
mentula. 
Notopterophorus papilio, Hesse, Annales des Sciences Natur. Cinquiéme Série, 
Zoologie, vol. 1. (1864) p. 338, pl. ii. figs. 1, 2, and vol. iii. (1865) p. 221. 
This most extraordinary species was found by Mr. Hancock in the 
branchial sac and water-passages of Ascidia mentula. It isa very inter- 
esting addition to our fauna. 
Entorocola eruca, n. sp. Allied to Entorocola fulgens, Van Beneden (Re- 
cherches sur la Faune Littorale de Belgique, Crustacés (1861), p. 150, 
pl. xxvi.), but is apparently distinct. The feet have one branch stout, 
papillary, not furnished with any claw, the other much more slender, 
terminating in three minute curved spines. The fifth segment of the 
body has a cylindrical tubercular process on each side of the back. The 
abdomen is composed of two (? three) articulations, and terminates in a 
furea, the branches of which are shorter than broad, and are furnished 
with a spine at the tip. 
Adhering to the intestine of Ascidia intestinalis. The type of the 
genus was found by Van Beneden in two species of Aplidiwn. 
Lichomolgus forficula, Thorell, Krustaceer som lefva i arter af sligtet Ascidia, 
p. 73, pls. xii. & xiii. fig. 19. From the water-passages and branchial 
sac of Ascrdia mentula. 
Ascomyzon echinicola, n. sp. Form of body and of the several segments near 
to that of A. Lilljeborgii (vide Thorell, K. Vet. Akad. Hand. Bad. iii. 
No. 8 (1859), pl. xiv. fig. 21), but the last thoracic segment rather 
longer, and the caudal lamin fully twice as long as broad, and longer 
than preceding segment. Upper antenne much shorter than in that 
species, 20-jointed, the eleven basal joints excessively short, the remain- 
ing somewhat longer, but none of them (unless it be the seventeenth and 
eighteenth) as long as they are broad. 
Parasitic upon Echinus esculentus, Linn. 
Caligus rapax, M.-Edwards. Common on fish belonging to the family 
Gadidee, 
curtus, Miller= CO. Miillert, Baird, Brit. Entom. p.271, pl. xxxii. figs. 4, 5. 
Common on Cod, Haddock, Ling, &e. 
Lepeophtheirus Salmonis, Kroyer, Naturhistorisk Tidsskrift, 2 Bd. (1837) 
p- 18, (figured): 1 Bd. pl. vi. fig. 7, = Lepeophtheirus Stromii, Baird, Brit. 
Entom. p. 274, pl. xxxii. figs. 8,9. From “Sea-Trout” taken in the 
loch near Burrafirth. 
—— Hippoglossi, Kroyer. Not uncommon on [ippoglossus vulgaris. 
Trebius caudatus, Kréyer. Common on Skate. 
Nogagus Liitkeni, n. sp. Upper antenne with both joints long, the first 
terminating in a bunch of lanceolate plumose setze, the second somewhat 
clavate, three to four times as long as broad; anterior margin plain, 
posterior with a single spine just beyond the middle; extremity with a 
tuft of sete. Cephalothorax much rounded, the posterior lateral pro- 
cesses strongly arched and incurved. Hinder antennee with the hook 
long and sleider, and the penultimate joint furnished with two very long 
setee. Second gnathopods (maxillipeds) with three crenated nodulous 
processes on. the palm. Genital segment subquadrate, rather longer 
than broad, the sides gently convex. Abdomen consisting of two seg- 
ments and the caudal lamin ; the segments short and broad, the second 
as long again as the first, the two taken together not exceeding the 
brearlth of the last; the caudal lamin large, as long as the two pre- 
