The Annals 



of 



Scottish Natural History 



No. 3] 1892 [JULY 



ON NEW AND RARE CRUSTACEA FROM 

 THE EAST COAST OF SCOTLAND. 



By THOMAS SCOTT, F.L.S., and ANDREW SCOTT. 

 PLATES VI. and VII. 



Lichomolgus aberdonensis, n. sp. (Plate VI. Figs. 1-12,. 



LENGTH, exclusive of tail setae, 1.46 mm. (about ^ 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 

 f Fie. i 2). The fourth segment of the abdomen in both sexes 



\ Q / O 



is shorter 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 setae, the fourth seta (counting 

 from the outside) is considerably longer than the entire 

 length of the abdomen and caudal stylets combined. 

 Anterior antennae seven-jointed, alike in both sexes, and 

 1 B 



