126 LENG AND HAMILTON. 



nearly invisilile ; elytra smooth, punctuation fine, obsolete toward the tips, which 

 are obliquely truncate, ornamentation variable, but always on each behind mid- 

 dle a conspicuous M-like fuscous mark bordered in front with white, behind 

 which are several indefinite fuscous spots, the margins are more or less fuscous 

 with pale indentations, on each side of the scutellum two short stripes which 

 may be prolonged backward interruptly : underside and legs fusco-luteous. 



In this species there is no trace of black points or dots, and the 

 thoracic fovese is an unusual character. Characterized from five 

 examples taken by Mr. E. A. Schwarz at Biscayne Bay, Florida, 

 now in his collection.] " Ham." 



L.. setipes Casey, 1891, An. N. Y. Acad. Sci. vi, 48. 



Length 7 mm. : .28 inch. Habitat. — Texas. 



[Described as moderately robust, convex, piceo-testaceous, densely 

 clothed with dark luteous pubescence ; elytra coarsely punctate, three 

 costiform lines on each and a large lateral blackish spot, recumbent 

 pubescence unusually long, angulate white fascia behind the middle, 

 tibiie with long flying hairs.] " Ham." 



DECTES Lee. 

 D. spiiiostis Say, 1827 (Lamia), Jour. Acad. Sci. v, 271 ; Lee, ed. ii. 330: Lee, 

 Jour. Acad. Nat. Sci. ser. 2, ii, 144 ; texnnus Lee, 1862, Proc. Ac. Nat. Sci. 

 p. 39. 

 Length 8-10 mm. ; .32-.40 inch. Habitat. — Massachusetts, New York, New 

 Jersey, Pennsylvania, Ohio, Louisiana, Texas, New Mexico. Colorado. Io\?a. 

 [Elongate, cylindrical, concolorous, piceous, densely cinereo-pubes- 

 cent throughout ; antennae longer than the body, annulate ; elytra 

 moderately punctured, each puncture bearing a suberect black hair; 

 female with a short, black, exserted ovij)ositor. A neat insect, re- 

 sembling Saperda concolor ; abundant. Breeds in the stems of Am- 

 brosia, especially artemisicefo/ia (ragweed), in wliich the larvte hiber- 

 nate.] " Ham." 



MECOTETARTUS Bates. 



In this genus the male antennae are four or five times as long as 

 the body, ciliate beneath, the third joint reaches the extremity of 

 the elytra, the fourth joint three times longer tluin the third, with 

 an apical tuft of stifl' black hairs, the seven following united not 

 longer than the fourth. The elytra are parallel, a little compressed 

 at the sides and obliquely truncate at apex ; the prothoracic spine is 

 near the base. 



M. aiitennatus Bates, 1872, Tr. Ent. Soc. London, p. 213 ; Euiessm asper Lee, 

 Class. 187:5, p. 339; New Species (S. M. C. No. 264), p. 23.5. 

 Length 14 mm. ; .56 inch. Habitat. — Lower California to Chontales, Nicaragua. 



