THE FAUNA OF THE SALCOMBE ESTUARY. 205 



LiCHENOPORA HISPIDA {Fleming). On sliells dredged in Salcombe 

 Harbour. 



Amathia lendigera {Linn.). On dredge material from channel west 

 of Salstone. 



BowEKBANKiA PUSTULOSA {ElUs and Solanchr) (?). A species of 

 Bowerbankia was common on dredge material from all parts of the 

 channel, from the Salstone to the mouth of Salcombe Harbour. It is 

 probably B. pusiulosa, although the contracted zocecia show forms 

 similar to those figured by Hincks for B. imhricata, as well as those 

 figured for B. pustulosa, and many intermediate stages. Hincks records 

 B. pustulosa as plentiful in Salcombe Bay. 



MiMOSELLA GRACILIS, Hincks. One piece dredged in channel west 

 of the Salstone. 



Pedicellina gernua {Pallas). On Turritella shell from the channel 

 between Salstone and Snape's Point ; on Scrtularella from channel 

 in Salcombe Harbour. 



Loxosoma phascolosomatum, Vogt. On the posterior end of Phas- 

 colosoma vulgare from the shore north of Pilworthy Point. 



[Note. — The iiicrusting Polyzoa, attached to shells, were not identified.] 



MOLLUSC A.* 



[Nomenclature: Forbes and Hanley, British Mollusca, 1853.] 



Pholas dactylus, Linn. Eecent shells of this species, some of 

 which were over five inches in length, were found in mud between 

 Garston Point and the Salstone, accompanied by lumps of bored chalk, 

 which were probably the remains of some cargo. One of the borings 

 showed very distinctly that the action of the spines of the shell had 

 played an important part in producing it. The sides of the hole 

 were marked with a number of transverse furrows of varying length 

 and depth, which were, as a rule, deep (perhaps jw inch) at one end 

 and shelved off to nothing at the other. The furrows were only visible 

 in the newer part of the boring, the old part being quite smooth. The 

 shells themselves were in very good condition, the spines being 

 prominent and sharp. This was probably due to the fact that they 

 were boring in soft chalk, as those we get at Plymouth in the shale 

 of Ptum Bay are always much smaller (three inches long), the spines 

 having been worn short and stumpy. It was found that only very 

 slight pressure was necessary to make furrows in the chalk with the 

 Pholas shells, similar to those seen in the borings themselves. 



Saxicava kugosa {Linn.). Two specimens, attached to stones, etc., 



were taken in the dredge between the Salstone and the mouth of 



the harbour. 



* By R. A. Todd. 



