516 NOTES ON LACHNOSTERNA. 



59. L. balia Say. 



The collection contains 4 $ and 10 9 . New Jersey, 1 $ ; Massachu- 

 setts, 1 9 (coll. J. B. S.); New York, 1 9, May 22; northern Illinois, 

 3 $ and 8 9 (coll. C. V. R. and Morrison). 



The males show little or no variation, and are smaller throughou 

 than the females. The latter show on the penultimate ventral segment 

 a more or less evidently impressed line, shorter as it becomes more dis- 

 tinct. 



Mr. Ulke has the species collected at Washington and also from Ten- 

 nessee, thus extending the range of the species southward farther than 

 mentioned by Dr. Horn. Mr. Schwarz has it from Detroit, Mich., 

 July 1. 



Both sexes have been studied. The males, as usual, have the claspers 

 dissimilar, and both of them with twisted processes. In the female the 

 pubic process is slender and bind at the tip. The superior plates are 

 distinct without being large. 



60. L. villifrons Lee. 



There are 4 <? and 9 in the collection, all from Illinois (coll. C. V. 

 R. and Morrison). There is no obvious variation, except in size, and 

 this variation is not sexual. Mr. Schwarz has the species from Penn- 

 ington Gap, Va., July 3, and Mr. Ulke has taken it not rarely at the 

 electric light in Washington. It was not among the species captured 

 in the systematic collecting. The two species, balia and villifrons, are 

 not easily separated, and care is necessary not to confuse them. The 

 difference in shape noted by Dr. Horn I can not make out, and the other 

 differences require tact to discover. Iu the genitalia the difference is 

 marked in both sexes. The claspers of the male, while appendiculate, 

 are so in an entirely different manner. In the female the superior 

 plates are more fully developed, and the pubic process is short, broad, 

 and stout. 



61. L. limula Horn. 



Not in the Museum collection. A widely distributed species west of 

 Illinois. To the kindness of Dr. Horn I owe the opportunity of study- 

 ing the genitalia of both sexes. The structures of both sexes approach 

 those of balia. In the male the claspers are both appendiculate, and 

 quite differently from any other species. In the female the superior 

 plates are well developed, comparing fairly in size with the inferior 

 plates, and the pubic process is long, sleuder, and narrowly bifid at the 

 tip. 



62. L. nitida Lee. 



Not in the Museum collection. According to Horn, from Georgia and 

 Pennsylvania. Only a female could be obtained for examination, and 

 this resembles in structure villifrons quite closely. 



63. L. hirticula Enoch. 



Numerous specimens of both sexes. Massachusetts, New York, New 

 Jersey, Pennsylvania, Maryland, District of Columbia- North Carolina, 



. 



