OF WASHINGTON. 163 



frequently on fences and stone walls in the country. Three 

 other species have been described as inhabiting other parts of 

 the globe ; one, Pholcus tipuloides, has been described by Koch 

 in (Arachn. Australiens, p. 281). Dr. Marx, however, recog 

 nized the same amongst a number of Spiders from the Bermuda 

 Islands (Proc. Nat. Acad. Sci. Phil., 1889). This species was 

 collected by Mr. K. A. Schwarz at Biscayne Bay, Fla. Another 

 species, Pholcus gibbosus, from Santa Fe de Bogota, has been 

 described by Keyserling (Verh. d. Botan. Zool. Gesellsch. 

 Wien, 1877). This species seems to be rather common in 

 southern California and Arizona. The third species, which 

 was collected in Arizona, Texas and New Mexico (Prof. Tyler 

 Townsend, Las Cruces), seems to be closely related, if not 

 identical with a species of Pholcus which Vinson collected at 

 the Isle of Reunion, and named it Pholcus. Of the seven 

 remaining species one was captured in State of Washington, 

 one in Idaho, two came from South Dakota, two from Cali 

 fornia, and one from Arizona. Dr. Marx stated that he had 

 a paper in preparation, giving descriptions and illustrations of 

 all these species. 



Mr. Schwarz exhibited specimens of Casnonia ludoviciana, 

 found this winter in great abundance at the edge of the exten 

 sive swamp along the Eastern Branch of the Potomac within 

 the city limits of Washington. The species was originally 

 discovered by its describer, Mr. Aug. Salle, in southern Lou 

 isiana, where it has subsequently been found by various ento 

 mologists, but always as a great rarity. In 1875 and in 

 subsequent years it was found abundantly in Florida, especially 

 in the Indian River country, occurring as far south as Biscayne 

 Bay. Many years ago Mr. Ulke captured a single specimen 

 near Washington, but this was thought to be an accidental 

 importation from Florida. C. pennsylvanica occurs in dry and 

 wet places, but C. ludovidana lives exclusively in wet ground. 

 The swamps along the Eastern Branch are inaccessible in 

 summer time, and the beetle can only be found in winter, when 

 it retires for hibernation upon drier ground. It will no doubt 

 be found in similar localities all along the Atlantic Coast as 

 far north as New Jersey. 



