460 COROPHIIDvE. 



states it to be the male of Podocerus. The general 

 resemblance of this genus to Podocerus is very con- 

 siderable, as may be seen by our figure of D. punctatus, 

 which was first described as belonging to the genus 

 Podocerus. We have, therefore, little doubt but that 

 Kroyer, while he distinguished the true relationship 

 existing between Cerapus and Dercothoe, was misled, 

 from the resemblance of the latter to Podocerus, to con- 

 sider that genus as being the female of Cerapus. 



Stimpson, in his descriptions of Cerapi in his " Marine 

 Invertebrata of Grand Manan," appears to have been 

 aware, both of the distinction and relationship between 

 the male and female of the genus Cerapus, without 

 having fully appreciated its important bearing in relation 

 to the observations of Dana and Kroyer. 



