1917.] NATURAL SCIENCES OF PHILADELPHIA. 115 



to me. It seems that the soft or papery plates of Lyosphcera are 

 simply the early stages of the short, blunt, rigid spines of the adult 

 Chilomyderus. For these reasons Lyosph(era globom may be merged 

 in the synonymy of the present species. 



Cottus gracilis Heckel. 



Musconetcong Creek. 

 Prionotus evolans strigatus (Cuvier). 



Abundant at Atlantic City and Somers Point. 



Leptecheneis neucrates (Linn6). 



One at Somers Point and two at Atlantic City. 



Lophopsetta maculata (Mitchill). 



Atlantic City and Somers Point; also next species. 

 Paralichthys dentatus d.inne). 

 Pseudopleuronectes americanus (Walbaum). 



Bayside. 



Achirus fasciatus Lacepeclo. 



Atlantic City and Somers Point. 

 Astroscopus guttatus Abbott. 



One at Cape May on May 2. 



Opsanus tau (Linne). 



Abundant at Atlantic City and Somers Point. 



Lophius piscatorius Linne. 



One at Stone Harbor on June 1. 



Pennsylvania. 



In the drainage area of the DelaAvare a number of collections were 

 made chiefly from points reached by automobile within a thirty-mile 

 radius of Allentown, by Messrs. E. S. and W. I. Mattern, during 

 August, September and October. Several thousand specimens w^ere 

 collected and all desiderata forwarded to the Academy. They were 

 from Carbon County (Lizard Creek), Lehigh County (Jordan Creek 

 throughout its entire basin, Saucon Creek near Lanark, Little 

 Lehigh River and Trout Run at Allentown, Indian Creek in the 

 Hosensack drainage near Corning, Coplay Creek, Fell Creek, Lehigh 

 River south of Rittersville and Ontelanj*^ Creek near New Tripoli, 

 the last a tributary of the Schuylkill), Montgomery Count}' (Swamp 

 Creek, Skippack Creek and Souderton, all in the Perkiomen drainage), 

 and Northampton County (Martin's Creek near Bangor). Con- 

 cerning most interesting conditions in the Jordan, Mr. E. S. Mattern 

 writes : 



