l8o ENTOMOLOGICAL NEWS. [June, '03 



9- 375 Cybocephalns nigritulis Lee. One specimen. 



10, 6141 Batyle sutitra/e Say. Common in Rio Grande valley, 



n, 6584 Coschtoptera <zneipennis Lee. One specimen by beating. 



12 , 6587 axillaris Lee. Several specimens by beating. 



13, Chlamys memnonius Lee. One specimen by beating. 



14, 6622 Crytocephalus leucomelas Suffr. Two specimens, beating 



willows along Rio Grande River. 



15, Pachybrachys sp. One specimen Rio Grande valley. 



16, 6738 Myochrous denticollis Say. One specimen Rio Grande valley. 



17, 10416 Disonycha crenicollis Say. Common, Rio Grande valley. 



18, Brnchns sp. One specimen. 



19, 10500 Einienas{es nitidits Casey. Rio Grande valley. 

 -20, 7307 Eiisatius ret'u it/atus Say. Two specimens. 



21, 7599 Hymenorus punctatissimus Lee. One specimen. 

 '"22, 7644 Hyporhagus opunticz Horn. One specimen by beating ; Rio 

 Grande valley. 



23, 10785 Elissa laticeps Casey. Beaten from low flowering shrub 



north of El Paso. 



24, Apion, new species. Beaten from flowering shrub same as 



above. Common. 



25, 11052 Tychius simplex Casey, common. Beaten from flowering 



shrubs with new species of Apion. 



Culex atropalpus Coquillett. 



"S 



BY HARRISON G. DYAR. 



This rather pretty little mosquito is found in the vicinity of 

 swift streams. The larvae are found only in the water-filled 

 pot holes that occur in the rocks along such places. I have 

 recorded the species from New Hampshire and on the Potomac 

 River in Maryland. In the latter place it was abundant, both 

 as larvee and adult. The adults were very troublesome on and 

 about the river, biting freely. The eggs are laid in patches on 

 the rock sides of the pot hole, just at the surface of the water, 

 usually at a time when the water is low. The winter is passed 

 in this state. Doubtless some of the eggs must be destroyed 

 during the winter and spring when the pot holes are filled by 

 the swollen stream and disturbed by ice and stones carried by 

 the current. Those that remain hatch early, but in an irregu- 

 lar manner. Eggs obtained in October began to hatch in 

 March and continued to hatch irregularly for some weeks, so 



