NOTES ON OCCUKEENCE OF TINTINNU8 SERRATUS 



IN CHESAPEAKE BAY 



By Bebt Cunningham 



The genus Tiutinnus was first named bv Shrank. By Dujardin 

 and Party it is not considered good. It is held as good by Kent, 

 Due 'd Orleans, Pritchard, Claparede and Lachman. 



The species serrahis was named by Kofoid-^ in 1905, the individ- 

 uals being taken 'inside the kelp belt off San Diego in June." 



The writer has found this species in the Plankton Collections 

 taken by the United States Bureau of Fisheries in Chesapeake Bay 

 during the years 1915-1916. 



The similarity of form may be seen from the following compari- 

 sons (Table 1) : 



TABLE 1. 



Kofoid gives the number of teeth as 20. In the material exam- 

 ined by the writer the number was estimated as 20, before access 

 was had to the Kofoid's paper. 



The collections of the Bureau were made more or less throughout 

 the year and the following tables are taken from the data which is 

 involved in the report of the Plankton investigation.^ 



^Kofoid C. A. Some New Tintinnidse from the Plankton of the San Diego Region, 

 Univ. of Cal. Pub. Vol. 1, No. 9. July, 1905. 



-The report of this plankton work has not yet been published. 



