THE FAUNA OF THE EXE ESTUARY. 323 



below the surface. After the flood-tide has started they seem to 

 burrow a foot or so, generally in a direction towards the incoming tide, 

 keeping just below the surface of the sand, and leaving a line of 

 zigzag indentations on the surface, with a larger indentation at 

 the end from which they started. One female was found in berry, 

 July 3rd, 1901. One living specimen had a fairly large tuft of a 

 green filamentous alga growing on the rostrum. Large numbers 

 of cast shells were found on Polesands on July 17th, 1901. 



PORTUNUS PUBER {Linnmus). Not uncommon in the dock and at 

 Orcombe Rocks. 



PoRTUNUS DEPURATOR, Lccich. One taken in mosquito net trawl 

 outside Polesands. 



PoRTUNUS HOLSATUS, Fcibricius. Two or three living specimens were 

 found buried in the sand on Polesands. 



CORYSTES CASSIVELAUNUS {Pciinant). A female with ova found 

 buried in sand on Polesands, July 17th, 1901. 



Pagurus (Eupagurus) Bernhardus {Linnmus). A few small ones 

 on Bullhill Bank (gravel), one or two between Bullhill Bank and 

 Cocklesand, one from Polesands, one in the dock, the latter with 

 Hydradinia : small ones fairly connnon on Orcombe Piocks. 



Porcellana platycheles {Pennant). Common under stones and in 

 crevices at Orcombe Eocks, and one dredged on the sponge ground 

 0^ Clock Tower (sta. 14b). 



HOMARUS VULGARIS, M.-Eclwards. Not uncommon in holes in the dock 

 walls. They are caught by being enticed out with bait and speared. 



Crangon vulgaris, Fahricius. Small and medium-sized shrimps 

 were more or less abundant on all the sand- and mud-flats ; large ones 

 were only taken outside Polesands, on the Bar, and at Straight Point. 



HiPPOLYTE (YiRBius) VARIANS, Lcacli. A few Small ones were taken 

 with the mosquito net trawl in Bullhill Deep Pit, two between Bullhill 

 Bank and Cocklesand, and one on the Bar, all of a brioht green colour. 



PAL.EMON SERRATUS {Pennant). One or two only from Bullhill Deep 

 Pit, the channel between Bullhill Bank and Cocklesand, Mere Bay, and 

 Kingslake. Common in the dock and at Straight Point, the latter 

 being the locality where they, as well as shrimps, are taken for sale. 



Gastrosaccus spinifer {Goes). Nine were taken with the mosquito 

 net trawl on the gravel on the west side of Bullhill Bank. 



Leptomysis mediterranea, G. 0. Sars. Two taken off the Polesands 

 in 2-3 fathoms. 



Leptomysis lingura, G. 0. Sars. One taken off the Polesands in 

 2-3 fathoms. 



