CHARLES P. ALEXANDER 223 ON A COLLECTION OF CRANE-FLIES FROM BRITISH GUIANA (TIPULIDAE, DIPTERA)' BY CHARLES P. ALEXANDER Ithaca, Xew York The present paper is the result of the study of an extensive series of crane-flies collected in British Guiana by the well-known ento-mologist, Mr. H. S. Parish, during 1912 and 1913. The material at hand consists of some 1200 specimens representing fifty-five species of which twenty-four are herein considered as new. Unless stated otherwise the specimens were taken at light as explained under Mr. Parish's account of his trip. The habit of many of the species of ovipositing at twilight or during the night explains why so many of the individuals secured at the lights were females. The types and miiques are deposited in the collection of the author. Paratypes of several of the species have been placed in the collections of the United States National Museum, the Hungarian National Museum, the Academy of Natural Sciences of Phila-delphia and the Museum of Comparative Zoology. Mr. Parish's Account of the Trip : I boarded my steamer at New York and after a journey lasting seventeen days I arrived at Georgetown, the capital of British Gui-ana, on November 28, 1912. On the second day after my arrival at Georgetown I caught the river boat that plies between there and Bartica, which latter place I reached after a pleasant trip of about 40 miles up the Essequibo River. Bartica is a pretty little village having a population of between 800 and 1000 including the Indians. The weather there is, on the whole, rather uncertain though one can generally depend on a little rain every day, excepting from September to November, during which months the rainfall is veiy slight. However, as I remarked above, one camiot place any dependance on the weather and it is well for the prospective col-lector to include in his impedimenta a good waterproof cape and an umbrella as a safeguard against fever and for his personal comfort. ■ Contribution from the Entomological Laboratory of Cornell University. TRANS. AM. KNT. SOC, XL. (17)