21 



much smaller than that species, does not agree with it in the propor- 

 tion of its parts, and has no sucli disparity in the length of the for- 

 ceps in the two sexes. The forceps of the male of L. guttata ))os- 

 sesses a postmedian tooth, which could hardly have been overlooked 

 by Serville, and the parti-colored abdomen, if a constant character 

 would distinguish it from Serville's species. It curiously resCmbles 

 Spongnplinra brnnneipennh Serv. 



Labia Burgessii. Head rather dark castaneous, tumid, with 

 two slight depressions between the antennte, lower part, of front, 

 labrum and palpi pale luteous. Antennas 13-jointed, the basal two 

 or three joints pale luteons, beyond brownish luteous becoming dusk- 

 ier toward the tip, the joints sparsely pilose. Pronotum as broad 

 anteriorly as the head, broadening posteriorly a very little, sides 

 straight, posterior border gently convex, the front portion very 

 slightly tumid, a slightly impressed median line, sides slightly mar- 

 ginate and a little paler than the slightly infuscated luteous disc. 

 Tegniina fusco-luteous, but little longer than the pronotum, squarely 

 docked at the apex; wings nearly obsolete, useless. Legs very pale 

 luteous, with a few scattered hairs. Abdomen rather long, with 

 nearly parallel sides, especially in the male, dark rich castaneous 

 with dusky incisures, the last joint generally a little paler; lateral 

 plications of second and third segments slight; last segment of male 

 quadrate, twice as broad as long, of female subcjuadrate, tapering, 

 about two-thirds as long as broad, of both depressed in tlie middle 

 posteriorly, with a very short longitudinal impressed line in the ante- 

 rior half of the depression, and next the inner base of the forceps, 

 especially in the male, a minute blunt roughened tubercle. Pygidium 

 of female small quadrate, scarcely longer than broad, minutely trifid, 

 or rather armed apically with three minute teeth ; of male large, 

 quadrate, more than twice as broad as long, the outer angles pro- 

 duced to a minute point, the posterior border sinuato-convex with a 

 slight point, more or less distinct, near the middle of either lateral 

 half. Forceps of ? not more than one-third the length of the abdo- 

 men, simple, trigonate and straight on basal half, flattened and 

 incurved on apical half, the inferior inner edge roundly and slightlv 

 excised at base, and beyond minutely and bluntly denticulate as far 

 as the middle, the superior edge similarly denticulate on the basal 

 half with a slightly more prominent tooth at the base. Forceps of d" 

 about one-half the length of the abdomen, slender, horizontal, 

 gently arcuate, longitudinally channeled on basal third above, de- 



