194 PROCEEDINGS OF THE ACADEMY OF [April, 



ARACHNIDA FROM COSTA RICA. 



BY NATHAN BANKS. 



During the past few years the writer has received large series of 

 spiders and daddy-longlegs from Costa Rica for identification. Most 

 of these were collected and sent by Prof. J. Fid. Tristan, of San Jose. 

 For a few years the late Dr. Paul Biolley sent me several lots, but 

 soon turned the whole matter over to Prof. Tristan. Most of the 

 specimens were collected at or near San Jose, but there are a con- 

 siderable number from the Pacific slope of the country. 



The majority of the species are of course already recorded by the 

 Biologia CentraU- America, but about 70 species are new and about 

 20 more not treated in that work. A few species recorded from 

 Costa Rica in the Biologia are not in the collections sent me. Many 

 of the Costa Rican records in the Biologia, are based on collections 

 from Dr. Biolley and Prof. Tristan, although not expressly so stated 

 in that work. The collection is similar to most tropical collections 

 of spiders — a large number of Attidse, Epeiridse, and Clubionidse, few 

 Drassidae and Thomisidse. The number of Phalangida is truly remark- 

 able. 



The web-building species show a considerable number that also 

 occur in our country, but of those not building webs there are very 

 few that extend into our borders. About seven or eight are species 

 commonly found in houses in the tropics of America. 



Altogether there are 288 species, 65 of which are Epeiridse, 48 

 Attidse and 33 Phalangida. Records without any name are all from 

 Prof. Tristan; elsewhere the collectors are given, "B. and T. " signi- 

 fying "Biolley and Tristan." Some species were collected by Mr. 

 Picado; a few by Messrs Lankester and Maxon. 



THERAPHOSID^]. 

 Eurypelma longipes Cambridge. 



Biol. C. Am. Arachn. Aran., II, 21, 1897. 



Machuca. 



Eurypelma seemanni Cambridge. 



Biol. C. Am. Arachn. Aran., II, 26, 1897. 



Atenas, August (Picado), and Pozo Azal de Pirris (Pac), 150 m., 



April (Biolley). 



