BIHANG TILL K. SV. VETi:AKAD. HANDL. BAND 11. N:o 15. ål 
Colour. Brownish. 
Length. 8 mm. 
Hab. The east coast of North-America, north of Cape Cad. 
? 4. Ianira breviremis. G. O. SARS. 
Syn. 1882. Janira breviremis. G. O. SARS. »Oversigt af Norges Crusta- 
ceer», etc. Forhandllinger 
i Videnskabs-selskabet i 
Christiania. Aar 1882, N:o 
18, p. 64, pl. 2, fig. 4. 
The head is anteriorly truncated. The first pair of an- 
tenne are 11—13-jointed, shorter than the breadth of the 
head. The first pair of pereiopoda, are not subcheliform, 
similar to the following. The uropoda are scarcely longer 
than half the pleon. The outer ramus is shorter than the 
inner, the inner longer than the peduncle. 
Colour. Grey, densely dotted with red-brown. 
Length. 3—4 mm. 
Hab. West coast of Norway (SaArRs). West coast of 
Sweden (C. B.). 
As Ianira breviremis has some charateristies common 
with the Ieras, it would probably be convenient to etablish 
for it a new genus, distinguished by the multi-articulate first 
pair of antenn&e, the not subcheliform first pair of pereiopoda, 
and the short but well developed uropoda. 
Gen. IX. TIathrippa. N: g. 
Deriv. ”Tatowrxa, name of a place in Arabia felix. 
Type. Tanira longicauda. CHILTON. 
Diagn. Corpus elongatum, deplanatum. 
Caput magnum, rostrum rotundatum gerens. 
Oculi magni, reticulati. 
Antenme primi paris breves, latitudinem capitis non superantes, 
flagello multi-articulato instruct2e. 
Antenne secundi paris longitudinem corporis equantes, flagello 
multi-articulato. 
Latera segmentorum pereii paulo producta, incisa, bases pedum 
haud tegentia, 
