PR.OCEEDINQS OF THE WASHINGTON ACADEMY OF SCIENCES Vol. IV., pp. 49-86. [Plates i-iii.] March 27, 1902. PAPERS FROM THE HOPKINS STANFORD GALA-PAGOS EXPEDITION, 1898-1899. VII. ENTOMOLOGICAL RESULTS (6). ARACHNIDA. By Nathan Banks. With Field Notes by Robert E. Snodgrass. CONTENTS : Part I, by Nathan Banks : Extent and Character of the Collection 50 Affinities of the Fauna 51 Geographic Distribution 54 Technical Descriptions : Araneida Filistatidae 55 Scytodidse 55 Pholcidae .... 56 Djsderidae . 57 Drassidae 57 Clubionidie 58 Agalenidse 58 Dictjnidse 59 Theridiidae 59 Epeiridse 60 Thomisiidte 62 Sparassidae 63 Ctenidae 64 Lycosidae 64 Attidae 66 Arthrogastra . . Phrynida 67 Scorpionida 68 Pseudoscorpionida 68 Solpugida 69 Acarina Ixodidae 70 Tyroglyphidse 70 Part II, by R. E. Snodgrass : Field Notes 71 Proc. Wash. Acad. Sci., March, 1902. (49)