H. C. FALL. 161 



narrowed at the base witlioiit trace of siiniation or expansion of the 

 basal margin, but is not at all closely allied to any of thera The 

 antennas are paler toward the base, with the first joint decidedly 

 yellow. It is possible that when the male appears this species may 

 have to be referred to Section III. 



Notwithstanding the difference in the shape of the thorax, which, 

 however, is not very marked, I strongly suspect that coutusum is 

 either the female of the species I have called spiiilpea, of which only 

 males are known, or else a somewhat aberrant female of extensum. 

 There is, as yet, however, no evidence which warrants my so 

 placing them. 



80. A. iiafiiutiini n. sp.— Moderately robust, dull black, not at all shining; 

 legs except knees and tarsi yellow ; the tibite sometimes slightly infuscate; vesti- 

 ture conspicuous, consisting of narrow scales or squamiform hairs, which are 

 condensed at the base of the third elytral interval and beneath. Beak moder- 

 ately stout, cylindrical, not noticeably dilated, subequal in length to the head 

 and pi'othorax, rather closely and strongly punctate throughout. First joint of 

 antennae yellow, as long as the two following, second very nearly reaching the 

 eye. Front but slightly wider than the tip of the beak ; eyes not prominent. 

 Prothorax nearly as long as wide, widest a little before the base ; sides rounded 

 behind the apical constriction, not sinuate before the base ; surface moderately, 

 closely punctate, the punctures more or less concealed by the vestiture. Elytra 

 about one-half longer than wide: humeri prominent; sides subparallel, feebly 

 arcuate ; intervals rugulose, nearly flat, about twice as wide as the strife. Beneath 

 strongly, closely punctate; legs rather short, moderately stout. Length 2. 2.5 

 mm.; .08 .10 inch. 



% . Beak black and densely clothed with squamiform hairs as far as the inser- 

 tion of the antennaj; tip narrowly black, intermediate portion yellow. 

 9 Beak concolorous and with but few hairs at the base. 



Hab. — Texas, New Mexico. 



This is the only species thus far known in our fauna (there are 

 several in Europe) which exhibits a sexual difference in the color of 

 the beak. The females seem scarcer than the males, which have 

 found their way in small numbers into most of the larger collec- 

 tions. Ml'. Wickham has taken both sexes at Albuquerque, New 

 Mexico, but apparently without recognizing their identity. 



81. A. segnipes Say. — Robust, black; basal joints of autennte, femora and 

 tibiae pale; knees dusky; vestiture conspicuous, consisting of elongate, grayish 

 white scales or scale-like hairs, which are condensed at the bases of the third 

 elytral intervals, on the front coxae and on the meso and metasternal side pieces. 

 Beak ( %) not stout, nearly straight, as long as the head and piothorax, a little 

 thicker in basal third, noticeably attenuate beyond the rather feeble dilatation ; 

 ( 9 ) longer and more slender; surface finely sculptured and punctate throughout 

 in both sexes. First joint of antennae as long as the next two ( 'J, ), or three ( J ), 



TR.\NS. AM. KNT. SOC. XXV. (21) NOVEMBER, 1898 



