November 18, 1898.] 



SCIENCE. 



687 



probably of two species, is obtained abun- 

 dantly. Perophora viridis is found on algse 

 from near the Sound. Common also is^?n- 

 aroecium constellatum, found at the Harbor's 

 mouth. 



Platyhelminthes : Fresh-water Turbellaria 

 are abundant. Bdelloura "propinqua is com- 

 mon on Limulus. Apoblema (Distomum) ap- 

 pendieidatum, which occurs abundantly in 

 Copepods here, has been made the subject of 

 a memoir by Professor Henry S. Pratt, of 

 Haverford College. The large Nemerteans, 

 Cerebratulus Leidyi and C ladeus, occur in 

 the sand spit. Of Annelids over fifteen spe- 

 cies have been identified, chiefly by Dr. J. 

 I. Hamaker. Nereis virens, although near 

 the southern limit of its area of distribu- 

 tion, is extremely abundant. The more 

 southern Nereis limhata is abundant. Other 

 common species are : Arabella {Lumbrico- 

 nereis) opalina, Euglycera (Ehincobolus) di- 

 branchiata, Clymenella torquata, Amphitrite or- 

 nata, Choitobranchus sanguineus, Cirratulus 

 grandis and Serpula dianthus. 



Rotifera : These organisms are extremely 

 abundant in the lakes, but no species have 

 been identified. 



Sipuncidoidea : Phascolosoma occurs on a 

 sand spit near the lighthouse at the en- 

 trance to Lloyd's Harbor. 



Entomostraca of many kinds are abundant 

 in the lakes. A few minutes' towing will 

 collect a countless number of individuals of 

 Daphnia. Of the marine copepods Acartia 

 is one of the most abundant. Many Ba- 

 lanidse occur and their larvse are common 

 on the tow. 



Amphipoda : Caprella acutrifrons, new va- 

 riety, can be obtained by the pint in the 

 ' gut.' Talorchestia longicornis is abundant 

 on the sand spit. 



Isopoda: Bopyrus is very common on 

 prawns, Idothea irrorata on eel grass, and 

 the Oniseidie about the springs. 



Podopthalmata : Squilla empusa is common 

 at the sand spit and Mysis in the tow. Among 



the decapods there have been identified 

 Homarus vulgaris, Callianassa and Gebia, 

 which occur in the sand spit. Numerous 

 hermit crabs occur. Other crabs are un- 

 usually abundant. The dredge or tangle 

 brings up from the region of the outer bar 

 Libinia caniculata, very large and numerous ; 

 lAbinia dubia; Callinectes hastatus, not com- 

 mon ; Platyonichus ocellatus, or ' lady crab ;' 

 Panopeus Sayi ; P. depressus ; Cancer irro- 

 ratus. On the shores fiddler crabs of two or 

 three species abound. 



Pycnogonidia : Pallene empusa Wilson is 

 common. 



Limulus is abundant on the sand spit, 

 near the laboratory. 



Insects : The moist woodland about the 

 lakes and springs offers a remarkably rich 

 collecting ground for insects. One of the 

 most striking species, on account of its size 

 and abundance, is a form of the cricket- 

 grasshopper, Ceuthophilus 



Vertebrates : Some twenty species of fish 

 have been identified.* Dogfish and sand 

 sharks seem to be common. The stomachs 

 of nine of the former have been examined 

 during July of this year, and an aggregate 

 of eleven squillas, four spider crabs, four 

 hermit crabs, three other crabs, several 

 teleosts and a squid have been found in their 

 stomachs. 



Newts and frogs are common. Many 

 tortoises, snakes, water aud land birds and 

 mammals are seen by the most casual ob- 

 server. 



I am indebted to Dr. D. S. Johnson, in- 

 structor at the Laboratory, for the following 

 description of 



THE FLORA ABOUT COLDSPRING HARBOR. 



The physiographic conditions of this re- 

 gion are considerably varied, as has been 

 noted above. On the outer coasts of the 

 north side of the island are extensive sandy 

 beaches, almost' or completely washed over 

 by the sea during hard storms. 



* Chiefly by Mr. Francis B. Sumner. 



