[Reprinted from ‘‘ The Annals of Scottish Natural History,” July 1892.] 
ON NEW AND RARE CRUSTACEA FROM 
ino ASr COAST<«OF SCOTLAND. 
- By Tuomas Scott, F.L.S., and ANDREW SCOTT. 
Pie se Vile aad) VL 
Lichomolgus aberdonensis, n. sp. (Plate VI. Figs. 1-12). 
LENGTH, exclusive of tail sete, 1.46 mm. (about zis of an 
inch). The cephalo-thorax is composed of five segments, the 
first of which is longer than the combined length of the other 
four, rounded in front, and not produced into a rostrum ; the 
fifth segment is rather longer than, and little more than half 
the breadth of, the preceding segment. Abdomen in both 
sexes composed of five segments, the first segment nearly 
twice the breadth of the next one, and as long as the second 
and third together. In the male the lateral distal angles of 
this segment are furnished with two small unequal spines 
(Fig. 12). The fourth segment of the abdomen in both sexes 
is siotter than either of the other segments. The_ whole 
length of the abdomen (exclusive of the caudal stylets) is 
scarcely half the length of the cephalo-thorax. Caudal 
stylets about half as long again as the last abdominal seg- 
ment and furnished with six sete, the fourth seta (counting 
from the outside) is considerably longer than the entire 
length of the abdomen and caudal stylets combined. 
Anterior antennz seven-jointed, alike in both sexes, and 
i} 
