2(t8 TRANSACTIONS, NATURAL HISTORY SOCIETIT OF GLASGOW. 



larity to the first, but the third joint has the hinder 

 angfle acute instead of rounded, the wrist is shorter, 

 and the hand is considerably broader, while the hind 

 margin is not produced so much in advance of the 

 front, so that the downward slope of the palm is 

 less steep. 



First and Second Perceopods. Apical spine of the 

 fourth joint shorter than the fifth joint. 



Third Perceopods. The hind margin of the first 

 joint nearly smooth. 



Fourth Perceopods. The first joint with its front 

 margin convex or almost angled, carrying three 

 single setae on the upper part and five groups on 

 the lower part ; the hind margin almost smooth. 



Fifth Perceopods. The first joint with nearly 

 straight front margin, the hind margin serrate but 

 not deeply, the joint widely expanded, especially 

 below, where the rounded margin reaches beyond 

 the short second joint. 



Length, a little over one-tenth of an inch. 



Habitat.— The specimen described, shown by the 

 lower antennse to be an adult male, was taken at 

 low water in muddy sand at Cumbrae. 



The preliminary description above given was 

 written before the species had been described and 

 fio-ured by Mr. Scott ; and as it adds some details and 

 corroborates others, it has been thought worth while 

 to print it. 



Genus Monoculodes, Stimpson. 



MONOCULODES PACKARDI, A. Boeck. 



Monoculodes Packardi, A. Boeck, Crust, amphip. 

 bor. et arct. (1870), p. 86.— A. Boeck, De Skand. og 

 Arkt. Amph. (1876), p. 274; pi. xiv. fig. 3.— J. Sp. 

 Schneider, Norges (Edicerider (1S83), p. 27 ; pi. 1, fig. 6. 

 — A. M. Norman, Notes on British Amphipoda, Ann. 

 and Mag. Nat. Hist., June, 1889, p. 453. 



This species has a long narrow^ rostrum with the 

 small eye situated at its base. In both pairs of 

 antennse the peduncles are elongate. In the third 



