1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 505 



Texas, Colorado, Tennessee, Nevada, Montana, California, Wisconsin. 

 Of all the others this extends furthest west, and the race cephalica Lee. 

 belongs to this species. It is fairly numerous at New York, formed a 

 fair proportion of the specimens received from Chicago, 111., from Mr. 

 Westcott, but is rare at Washington, only a single specimen having 

 been taken during the last season (1888). 



35. L. fusca Frolil. 



This is the form which Dr. Horn suggests as likely to be the one seen 

 by Frohlich, and upon which he based his species. It offers no point 

 of superficial difference from the preceding species, with which it agrees 

 in form, color, size, and general habitus. The ventral character in the 

 male must be examined to recognize that sex, and no difficulty will be 

 found in this. The female is easily distinguished from all its allies by not 

 having the last ventral segment emarginate. This character is at once 

 obvious on examination, and the species is thus readily recognizable in 

 both sexes. A comparison of the figures will show the change in type 

 of genitalia from the preceding. The female shows the greater differ- 

 ence and is somewhat unique, the pubic process being subulate, slender, 

 the superior plates coalescent on the median line. 



This species is in the collection from Texas, New York, New Jersey, 

 Ohio, Illinois, District of Columbia, Iowa. 



It is the common form around New York City ; was the only form 

 found in a large lot of material from Cleveland, Ohio, and was repre- 

 sented in great proportion in a lot of specimens from the viciuity of 

 Chicago, 111. In the District of Columbia it is very rare, no specimens 

 having been taken at all during the season of 1888, and only a few 

 specimens from the locality are in the local collections. 



36. L. grandis Smith. 



This species is, as a whole, rather larger than either of the others and 

 rather more robust. The sides of the thorax are very perceptibly sub- 

 angulate before the middle, giving the species a distinctive appearance 

 which is generally easily recognizable in both sexes. In the female the 

 last segment is emarginate and the middle of the abdomen, especially 

 toward the base, is distinctly and somewhat aciculate punctate. The 

 male character has been sufficiently given in the table. The last ven- 

 tral segment is granulate punctate. Within my experience this is the 

 rarest of the fusca forms, though widely distributed. I have seen it 

 from Texas, North Carolina, Georgia, District of Columbia, Illinois, 

 Colorado, Maryland, New York, Wisconsin, Nova Scotia, Lake Superior 

 region Mr. Schwarz thinks it more common about Lake Superior tlian 

 the other species. In the District of Columbia it is rare, only isolated 

 specimens having been found by the local collectors. 



The male ventral character differs from that of the allied spec.es in 

 that there is no perceptible curve to the ridge, which is rather promt- 

 nent and not at all crested or declivous posteriorly. The genitalia or 



