BIHANG TILL K. SV. VET.-AKAD. HANDEL. BAND 11. N:o 15. Al 
1850. Jera. LEACH. WHITE. Catalogue of British ani- 
mals in the collection of 
the British Museum. Part 4. 
Crustacea, p. 69. London. 
1852. » > DANA. United States Exploring Ex- 
pedition Crustacea. Vol. 2, 
p. 716. Philadelphia. Fol. 
1852. Jeredina. H. MILNE- 
EDWARDS. > » > på 116: 
1853. Jera. LEACH. CostA. Fauna di Regno di Napoli. 
Crostacei. Fasc. 83, p. 83. 
1868. ? : SPENCE BATE and WESTWOoOoD. A 
History of the British Ses- 
sile-eyed Crustacea. Vol. 2, 
p. 314. London. 
1880. » D O. HARGER. »Report of the marine Iso- 
poda of New England and 
adjacent waters». Report of 
the U. S. Commissioner of 
Fish and Fisheries. Part 6, 
p. 314. 
Antenmne primi paris breves, IV- vel V-articulate. 
Antenme secundi paris dimidium corporis equantes vel superantes, 
flagello multi-articulato. 
Mandibule valide, palpum tri-articulatum gerentes. 
Latera segmentorum pereii paulo producta, non laciniata, bases 
pedum tegentia. 
Pedes pereii subequales; dactyli pedunculati, bi-unguiculati. 
Pedes uri pedunculo laminato, brevi, ramis binis minutissimis. 
The body is ovate, more or less elongated, depressed. 
The head is broadly ovate, the anterior margin lobated 
or produced at the midth. 
The eyes are distinct, remote. 
The first pair of antenne are four- to five-jointed, very 
short, equalling a third of the breadth of the head, or less. 
The second pair of antenne equal half the length of the 
body or are longer. They carry a multi-articulate flagellum. 
The mandibles are strong, with a three-jointed palp. 
The lateral margins of the pereional segments are produ- 
ced, but not laciniated, they cover the bases of the legs. 
The pereiopoda are subequal, the dactyli pedunculated, 
bi-unguiculate. 
The uropoda consist of a very short, more or less lamina- 
ted peduncle, and two extremely small rami. 
As I am unable to find any differences of generic value 
between JIeridina Nordmanni and tera albifrons. I am 
