SYNOPSIS OK Till-: LAM1IN.T2. 153 



-■»!. iiiiirKiiiellu Lee, 1873, New Si)ecies (S. M. C. No. 264), j). 239. 

 Length 7-8 miu. = .28-.32 inoli. Habitat. — Illinois. Texas, Kansas. 



[Easily known hy the chanicters in the tiibh'.] " TIani." 



.11. por^rala Say, 1823 {>^aperda). Jour. Ac. Nat. Sei. iii, 408: Lee, ed. ii, 190: 

 stt'itostolii peninita Lee, .Jour. .Ac. Nat. Sci. ser. 2(1, ii, l.")4 ; Steno.stola (jentUiK 

 Lee, 1. c. p. 154. 

 Length 8-10 mm. ^ .32-.40 inch, llnbitnt. — Dakota, Nebraska. Colorado. Kan- 

 sjis, Mis.souri. New Me.xico, Texas, Louisiana. 



[In addition to the characters in the table it need only be added 

 that the antennie are annulate, tliat the underside varies from pice- 

 ous to rufous, and that the sutural and marginal lines of denser 

 l)ubescence are usually eonspicuou.s.] " Ham." 



M. feinoralis Hald., 1847 (Phuta-da). Tr. \m. Phil. .Soc. x, 59; Lee, .Tour. Ac. 

 Nat. Sci. ser. 2, ii, 155. 

 Length 7.5 mm. = .30 inch. Habitat. — District of (■olumbia, Georgia, Florida. 



[The characters in the table need nothing additional.] " Ham." 



-M. ruficollis Horn, 1878, Tr. Am. Ent. Soc. vii. 44. 

 Length 12.5 mm. = 50 inch. Habitat. — Texas, Mexico. 



[The antennre and elytra are black ; the pubescence on the thorax 

 forms denser patches each side of middle and on the sides; the legs 

 vary from black to rufous.] " Ham." 



"The .<exual characters of Meca.s are similar to ()brre<t, the last 

 ventral of the male is triangularly concave and the pygidinm of 

 the female rather protuberant," Hoi-n. 



OB ERE A Mnlsiiut. 



The .species of Oberea differ in the form of the thorax, which may 

 have four, two or no callosities ; in the form of the female pygidium, 

 which in two species is strongly protuberant, in the others but feebly 

 so ; in the form of the elytral tip, which may or may not be bidentate 

 and emarginate ; and in color. In the last respect certain species are 

 constant; others ])resent such variability that a considerable number 

 of names have been proposed, which are now considered synonyms, 

 but which still leave many forms unnamed. The synopsis by Dr. 

 Horn (Trans. Am. Ent. Soc. vii, pp. 45-47, reduced the number of 

 st)-called species and an increased number of examples shows that a 

 further reduction is necessary. I would therefore, disregarding the 

 color for the present, arrange the .species as follows: 



TRANS. AM. KNT. SOC. XXIII. (20) MAY, 1896. 



