234 -~ TLransactions.— Zoology. 
Art. XI.—Descriptions of new Crustaceans. By Gro. M. Tuomson, F.L.B. 
[Read before the Otago Institute, 31st October, 1882.] 
Plates XII and XIII. 
Fam. ZEGIDJE. 
Sub-fam. CIROLANINE. 
Genus Pseudega, n. gen.. 
Eyes rather small. External antenne hardly separated from one another. 
Inner antenne tolerably elongated. Legs all adapted for walking. 
Epimere well-developed, and produced acutely backwards. Abdomen 
distinctly 5-jointed ; last segment large. Caudal appendages reaching its 
extremity. 
1. Pseudaga punctata, n. sp. PI. xii., figs. 11-13. 
The body is somewhat oval in outline, concave above, and nearly flat on 
the under-surface. The head is nearly square, and is inserted into the first 
thoracic segment, which considerably exceeds the other subequal segments 
in length. The abdominal segments are very distinct; the 4th and 5th 
are overlapped at the sides by the preceding segments. The last segment 
is triangular, with somewhat rounded edges, which are fringed with long 
hairs, and ends in a sharp point. The eyes are placed in the lower and 
outer angles of the head, and are nearly hidden by an upward-toothed pro- 
jection of the 2nd joint of the external antenne. These organs are very 
close together at the base, and the point of their flagellum just reaches the 
suture between the 4th and 5th thoracic segments. The internal antenne 
are much more slender, but the peduncle reaches the extremity of the 
peduncle of the outer pair, while the flagellum reaches to about the middle 
of the 2nd thoracic segment. 
The legs increase in length posteriorly, the 7th pair being considerably 
the longest. The caudal appendages reach the extremity of the abdomen, 
and are fringed with long hairs; the inner branch is very broad, and 
has a long acute tooth on its outer margin; the outer branch is nearly 
“linear. 
All the legs and the margins of the epimer® are furnished with roughish 
hairs, but the upper part of the body is smooth. The general colour is 
grey, owing to the integument being covered with minute black stellate 
markings. Length :5 inch. 
Loc. Washed up on the Ocean Beach, near Dunedin. 
I advance this genus and species provisionally, as I cannot satisfactorily 
place it in any of the existing genera. A revision of the Isopoda is very 
much wanted. 
