222 TKANSACTIONS OF THE [mAR. 15, 



PLATE XYI. 



Illustrating the paper of N. R. Harrington, pp. 214-222. 



Fig. 1. Eupagiirus alaskensis (Benedict), with commensal Nereis cyclurus 

 n. sp., inhabiting Lunatia shell. 



Fig. 2. Lower coils of Lunatia shell, inhabited by hermit-crab, broken 

 away, showing Nereis cyclurus in its normal retreat. 



Fig. 3. Head and anterior somites of Nereis cyclurus n. sp. This drawing 

 was made by Mr. J. H. McGregor. Figures 1 and 2 are reproduced from 

 photographs. 



PLATE XVIL 



Illustrating j^aper of N. E. Harrington, pp. 214-222. Drawn by the author. 



Fjg. 1, 2, 3. Parapodia of 10th, 20th, 30th somites Nereis cyclurus, n. sp. 

 epitocous Nereis 9 • 



Fig. 4, 5, 6. Parapodia 10th, 20th, 30th somites JV. cycluriis, u. sp. ato- 

 cous Nereis form sexually immature. 



Fig. 7. New bristle from epitocous Heteronereis form N. cyclurus. 



PLATE XVIII. 



Illustrating paper of N. R. Harrington, pp. 214-222. Drawn by the author. 



Fig. 1, 2, 3, 4, 5. Parapodia 1st, 10th, 20th, 30th and 50th somites of N. 

 cyclurus, adult, epitocous Heteronereis form. FiG. 5. shows modified sexual 

 form of parapodium with accessory respiratory lobes on ventral cirrus and 

 neuropodium. All these appendages are distended with eggs even to the 

 tips of lobes. Two ova are shown for relative size at side of Figure 5. 



Stated Meeting. 

 March 15tli, 1897. 



The Academy met with President Stevenson in the chair. 

 Twenty-one members were present. 



The minutes of the last meeting were read and approved. 



The nominations of Mr. Edward T. Adams and Professor J. 

 J. McXulty were read and referred to the Council in the regular 

 course. 



The Section of Geology and Mineralogy then formed and pro- 

 ceeded to the election of officers for the ensuing year. President 

 Stevenson declined the renomination as chairman and Professor 

 James F. Kemp was nominated and elected. Professor Richard 

 E. Dodge was nominated and elected secretary. 



