120 A renicolidae 



which proved to be A. pusilla. Among the localities given by Ives 

 for "A. marina" are Coquimbo and Vancouver, but the records 

 from both these places relate to A. pusilla. 



The specimen from Ossero, referred by Grube to " A. piscatorum " 

 which is preserved in the Kgl. Zoologisches Museum, Berlin 

 (Ash worth, 1910), is an example of A. pusilla. 



Grube's record from Callao is a mere mention of the specific 

 name A. piscatorum. The writer has endeavoured, without success, 

 to trace the material on which the record was founded ; it is not in 

 the museums of either Copenhagen or Berlin. The record is cited 

 under A. pusilla on the ground that Callao lies within the known 

 range of this and of no other species. 



In the " Collection Grube " in the Berlin Museum are specimens 

 probably those collected by Grube and mentioned in his two memoirs 

 (1838, 1840) labelled " Mittelmeer," which belong to the species 

 A. pusilla. Among the localities cited by Grube are Naples, Italy, 

 Sicily, and on the ground of the inclusion of the first named, as well 

 as on the result of the examination of his specimens, his record is 

 included pro parte under this species. 



Schmarda recorded examples from the Mediterranean, the English 

 Channel and the Pacific Coast (the Bay of Paita, or Payta, Peru), 

 and remarked that they all belonged to the same species, A. pisca- 

 torum. The subsequent statement that the specimens from Paita 

 possessed twenty oesophageal glands shows that they were either 

 A. pusilla or assimilis. Although the author has endeavoured to 

 trace Schmarda's specimens he has failed to find them, so their 

 identity cannot be established with certainty. Prof. Ehlers has 

 included Schmarda's record under A. assimilis, .but the respective 

 distributions of A. pusilla and assimilis suggest that Schmarda's 

 specimens more probably belonged to the former species, and his 

 record is therefore cited here with a query. 



Prof. Ehlers' record of A . assimilis from California is based on a 

 specimen a duplicate from Agassiz's collection in the Gottingen 

 Museum. Agassiz's collection is at present in the writer's hands, 

 and from it was selected the example shown in Figs. 53, 54, p. 118. 

 The Gottingen specimen has been compared directly with this and 

 found to agree in every respect ; it is undoubtedly A. pusilla. 



The information given by Delle Chiaje regarding his specimens 

 of Lurribricus marinus is very imperfect and unsatisfactory. The 

 specimens were collected near Naples, and among them was apparently 

 one or more with the first gill on the seventh segment, and therefore 



