130 



FAUNA OF THE ISLES OF SCILLY. 



Tcqjes piillastro. 

 Artemis exoJeta. 

 Littorina littordis. 

 L. rudis 



Aeolis papilloma 

 Arehidoris tuhermlata 



Cancer pagurus 

 Pilmu7ius hirtellus. 



Carcinus mcenas. 

 Portunus puhcr. 

 P. arcuatus. 



Porcellana platycheles. 



Galathea squamifera. 

 Crangon vulgaris. 

 C. fasicatus. 

 Leander serratus. 

 Macro my sis flexuosa. 

 JVcbah'a bipes 



SpadeUa cephaloptera. 



Common. 

 Several. 

 Common. 

 Common. 



NlTDIBRANCHS. 



and spawn, once only. 



and spawn, fairly abundant, 



CEUSTACEA. 



Common everywhere, especially abundant 

 in the harbour. 



Abundant. Most of the females carry- 

 ing ova. 



Common. 



Scarce, 



Common. Many of the females carrying 

 ova. 



In swarms everywhere under stones, 

 from half-tide down to low water, 

 females 



the 



with 



Aretiicola marina. 



Most of 

 attached. 



Scarce. 



Common. 



Scarce. 



Common. 



Abundant. 



Abundant in certain places. No para- 

 sitic rotifers belonging to the genus 

 Seizon detected on any, 



VERMES, 



Very locally distributed Not very 

 numerous. From a careful examina- 

 tion of these specimens there is no 

 doubt that the species described by 

 Lewes and named by him Sagitta 

 Mariana is this species. 



Common, Especially abundant at Forth 

 Merlin beach, 



