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TAXONOMIC INVESTIGATIONS 
S. A. Rohwer, Senior Itomologist, in Charge 

H, F. Schwarz, of the american Museum of Natural History, spent a 
three days, way 2, 3, and 4, in the Division of Insects studying the col- i 
lection of meliponid bees, comparing specimens with types, and making 
notes in preparation for a trip abroad which he is expecting to take in 
July, when he will do further studying in various museums in Huropes 
Dr. Karl Jordan, curator of the Tring Museum, Imgland, spent most 
of the month of May at the National Museum, studying the National Collec- 
tion of fleas. Dr. Jordan is preparing a monograph of the fleas of the 
world as a memorial to the late Honorable N, Charles Rothschild, who was 
for many yearsan associate of Dr, Jordan in his work on the fleas, While 
in Washington Dr. Jordan called on a number of scientific men whose ac— 
quaintance he had made abroad, 
While at the Museum Dr, Jordan gave to the National Collection a 
male of Arixenia jacobsonii Burr from the Malay Peninsula, a very interesting 
and rare insect belonging to the order Lermaptera, 
Prof, H, ©, Fall, of Tyngsboro, Mass., visited the Division of In- | 
sects from lay 24 to May 27, studying types in the Gasey Collection of | 
Coleoptera, 
frank Johnson, of New York, recently spent a day in the Section look-= 
ing at the Lepidoptera collection, and brought with him some very nice con- 
LELwOtLonus:. tO it. 
T, He Hubbell, of the Zoological Museum, University of Michigan, 
visited 4, Nf, Caudell on May 27, studying material of the genus Ceuthophilus. 
Dr. Js ie aldrich, of the Division of Insects, left Washington by 
automo bile on may 29 for a three months! trip, collecting insects in the 
West. Dr, Aldrich has been collecting Diptera of the United States since 
1890, and has in mind several regions in the west where but little collecting 
has been done, One of these is in eastern Nevada, in the East Humboldt 
Range. This is a long distance from the places where insects have been ex~ 
tensively collected, and some slight collections made there have shown a 
Surprising number of undescribed species, ‘This will be the principal obdjec- 
tive of Ore Aldrich's trip. Second in importance are the Black Hills of 
South Dakota, which on account of remoteness from through lines of railroad 
and the principal automobile routes have also been but little investigated 
as far asthe Diptera are concerneds Dr. Aldrich spent three weeks in.the t 
Black Hills in 1892 and collected some material which is now in the National 
Collection, Practically no other Diptéra fru that region aré now in the 
lusgum, Zesides the two points mentioned, Dr. Aldrich will collect in many 
Other interesting places, including the continental divide in Colorado, the 
Vicinity of Lake Tahoe, Mono Lake, and the high Sierras. Dr. Aldrich is ac- 
companied on the trip by Mrs. Aldrich and his niece, Miss Mary foley, Assis- 
ea Scientific Illustrator in the Division of Truck-Crop Insect Investiga- 
ions, 
