1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 499 



and not easily taken, judging from the small number of specimens in 

 collections. There is absolutely no variation in the large series before 

 me, save a slight difference in the intensity of the brown. 



The genitalia are uusymmetrical in the S , the claspers very dissimi- 

 lar. In the 9 the superior claspers have become entirely modified 

 into supports for the double pubic process, which is very like that of 

 affinis in type, though very different in detail. 



23. L. calceata Lee. 



We have two 9 specimens, " Gainesville, Tex., from the stomach of 

 a chuck-will'swidow," May 12. The specimens are of course some- 

 what damaged, but quite recognizable. 



Mr. Schwarz kindly let me have a S specimen for dissection, but 

 by some mishap the preparation was lost, and I can not find that I made 

 even a sketch of it. The species seems rare. 



24. L. crasissima Blanch. 



We have 15 S and 9 9 . Texas (coll. C. V. B., J. B. S.), 5,3 9 

 Arkansas (coll. J. B. S.), 2 5,29; Kansas (coll. 0. V. R., J. B. S.), 1; 

 5,29; Nebraska (J. B. S.), 1 5 ; Illinois (coll. J. B. S.), 1 9 ; New 

 York (coll. J. B. S.), 1 9 . 



Dr. Horn gives from Kansas to Texas as localities. I am positive 

 my New York specimen is correct, as it has my local label, and I am 

 also very certain of my Illinois specimen. The species has therefore 

 rather a wide distribution. 



The genitalia are distinctive and differ quite considerably from the 

 immediately preceding forms. They are in the 5 symmetrical, and of 

 a type quite similar to that of generosa in the early part of the series. 

 The 9 , on the contrary, has both plates definitely developed, and the 

 pubic process is characteristic, bifid but not double aud somewhat flat- 

 tened. 



There is quite a distinct variation in the punctuation of the clypeus. 

 In some specimens it is sparse, the punctures well separated, the inter- 

 vals smooth, in others the punctures are fully as densely set as in 

 specimens of fratema. 



As a rule the 5 is smaller and paler. One of the 9 from Arkansas 

 measures .88 inches, larger than any specimen before Dr. Horn (.82 

 inches). 



Otherwise the specimens are very constant and with \ r ery little vari- 

 ation in other respects. 



25. L. subpruinosa Casey. 



Three 5 are in the collection (coll. J. B. S.) from Pennsylvania. 



Dr. Horn says, " Taken near Jacksonville, Fla., by the late Edward 

 Tatnall." The specimens now in the Museum collection were given me 

 by Mr. H. W. Weuzel, aud were collected by him in the vicinity of 

 Philadelphia. Mr. Casey described the species from examples taken ou 

 Long Island or near it. 



