8o THE SCOTTISH NATURALIST 



arranged, viz., one spot well up on the outer division, two on the 

 next a short proximal and a longer distal one which extends nearly 

 to the tip. The telson has a spot near the tip and a linear one at the 

 base. The eyes are yellowish in spirit (and in life?), best seen from 

 the ventral surface. A row of brownish specks runs up the centre 

 of the under surface of the abdomen, one to each segment. 



Palxmo/i sqiiilla, L. Those having eight spines on the upper 

 edge of the rostrum differed from Bell's description, w^hich is that the 

 "true and certain criterion being the fact that of the upper 

 teeth two are invariably placed on the median line of the carapace 

 posterior to the base of the rostrum, and the third immediately over 

 the margin of the ocular notch," whereas in the St Andrews 

 specimens three spines were behind and the fourth over the ocular 

 notch. In the notches between the spines are many hairs, and there 

 are tufts of hairs on the hands of the second pair of feet. It is 

 interesting that the pools frequented by this species are situated not 

 far from high-water mark beyond the Rock and Spindle. A few 

 large stones, or a submerged ledge, occur in them, and the sides are 

 coated with Fiicus serratus and green algje (not Ulvd). It 

 balances the antenna most gracefully in the water, and remains still 

 (except for the movement of the pleopods) as it watches an intruder, 

 ready, however, to dart wdth extreme rapidity under a ledge or stone, 

 where its mate probably lurks. With the exception of a stray 

 Carcinus, it is the most powerful of the crustaceans in the pool, 

 which may harbour a small Cotti/s, a few Mysid^ and Garamari, 



Pandalus Montagui, Leach. The large eyes have a peculiar 

 black dot on the inner (mesial) margin. The antenna have their 

 reddish bands broader than the white. It keeps moving these 

 cautiously in all directions, and frequently extends them at right 

 angles. The antennules are regularly feathered from a little below 

 the tip nearly to the base, and it jerks these backward and forward. 

 Like its allies it changes colour according to its surroundings. There 

 are four circles of coloured bands on the abdomen. 



Hippolyte varians, Leach. Green is not the common colour of 

 those from deep water or from the laminarian region at St Andrews. 

 Most are of a liver-brown tint, with four or five granular light spots 

 bordered with yellow along the carapace, though sometimes these 

 spots are scarcely visible, and the general brownish hue is of various 

 degrees of intensity. Many have a spot at the base of the telson, 

 and several of a yellowish hue over the abdominal segments. The 

 smaller specimens often have a pale yellow streak along the centre of 

 the back. In addition, others are yellowish brown, or bordered with 



