82 PROC. ENT. SOC. WASH., VOL. 24, NO. 2, MAR., 1922 



Fig. 6 A posterior trunk limb of the trilobite Triarthrus. 



Fig. 7. Second maxilla of crustacean Nebalia bipes. 



Fig. 8 Maxilliped of crustacean My sis sp. 



Fig. 9 Maxilla of apterygotan insect Japyx so/if ugus. 



Fig. 10 Maxilliped of crustacean Gammarus sp. 



Fig. 11 Maxilla of larval neuropterous insect Sialis sp. 



Fig. 12 Maxilla of apterygotan insect Machilis sp. 



Fig. 13 Maxilla of crustacean Mysis sp. 



Fig. 14 Maxilla of apterygotan insect Campodea staphylinus. 



Fig. 15 Enlarged palpifer and maxillary palpus ot apterygotan insect Tetro- 



dontophora bielanensis. 



Fig. 16 Maxilla of Tetrodontophora bielanensis. 

 Fig. 17 Maxilla of apterygotan insect Eosentomon sp. 

 Fig. 18 Maxilla of pterygotan insect Periplaneta orientalis. 

 Fig. 19 Lacinia of maxilla of apterygotan insect Nicoletia neotropicalis. 

 Fig. 20 Lacinial structures of apterygotan insect Anurida maritima. 

 Fig. 21 Same from another view. 

 Fig. 22 Tip of endite of second segment of first maxilla of crustacean Tri- 



choniscus corsicus. 



Fig. 23 Tip of endite of second segment of maxilla of crustacean Gammarus sp. 

 Fig. 24 Lacinial structures of apterygotan insect Tetrodontophora bielanensis. 

 Fig. 25 First maxilla of crustacean Talorchestia longicornis. The position of 



a hypothetical palpus is indicated by dotted lines. 



Fig. 26 Hypopharynx and maxilla of apterygotan insect Japyx japonicus. 

 Fig. 27 Lacinial structures of apterygotan insect Machilis sp., from Japan. 

 Fig. 28 Lacinial structures of apterygotan insect Sminthitrides serroseta, 

 Fig. 29 Distal lobe (endite) of first maxilla of crustacean Nebalia geoffroyi. 

 Fig. 30 Lacinial structures of maxilla of apterygotan insect Pogonognathus 



(Tomocerus?) plumbeus. 

 Fig. 31 Lacinial structures of apterygotan insect Allacmafusca. 



NOTES ON APION, WITH DESCRIPTIONS OF TWO NEW 

 SPECIES (COLEOP., CURCULIONIDAE). 



BY L. L. BUCHANAN, Washington, D. C. 



The following paper presents a few notes on a collection of 

 Apion from the vicinity of Lake Okoboji, northwestern Iowa; 

 and the descriptions of two new species, one from Iowa, the 

 other from the South Atlantic region. The Lake Okoboji 

 series at hand represents 12 or 13 species, but among them I can 

 recognize only 5 or 6 of the dozen which appear in Wickham's 

 Iowa catalog, the remainder being heretofore unrecorded from 

 the state. It may not be out of place to mention here that, 

 as a whole, the coleopterous fauna of the Lake Okoboji region 

 is distinctive in containing a considerable scattering of species 

 of a decided northern or western type, that disappear a little 

 further south in the state. 



