130 I.ENG AND IIAMri/rOX. 



[By the table the several forms may be readily separated into 

 races or species as they maybe viewed. In aspersus the antennse % 

 and 9 are more than twice as lonj^ as the body, and on the elytra 

 are three rows of small spots (sometimes indistinct) placed on three 

 lines a little paler than the general surface; in muculatu>i the an- 

 tennae of S are about twice as long as the l)ody and the elytral sj)ots 

 much larger and irregularly disposed ; in nliirclliiJ^ the antennte are 

 as in (M])er.-<ns, and the elytral spots larger than in )iiacnlatii.s, some 

 of them frequently confluent ; exam})les of c<i/ifoniiciis received re- 

 cently by Mr. Leng, taken in Santa Cruz Mountains by Mr. Koebele, 

 show that it does not ditter from the eastern races except as stated 

 in the tabh;. Breeds in the dry twigs of Popirlm mnnllijera and 

 tremidoidea (Schwarz); in a{)ple twigs ( Riley j] "Ham." 



Acanthocini. 



The presence of an ovipositor in the fenuile is the chief character 



separating this group from the Llopi. The genera as defined by 



Dr. Geo. H. Horn and Messrs. Bates and Gahan in Tr. Am. Ent. 



Soc. viii, 128 ; xiii, Proc. Section, }>. xii ; and xv, -300, are as follows : 



Body above with erect hairs mixed with tlie pubescence. 



Mesostermim broad ; antenine not nuich longer than the body and not ciliate 



beneath, except feebly on the scape Ciira|>lii!>iiirii!«. 



Mesosternum narrow ; antennae twice as long as the body, % , and very slender, 



ciliate beneath <'erat<»gra|>]iiw. 



Body above pubescent, without erect hairs. 



Mes()st(;rnum moderate ; antennte very long, joints 3-4 at least densely fringed 

 beneath with short hairs; lateral tubercle of thorax distant from base. 



Acaiilliociiiii<«. 



Mesosternum broad; antenna' moderate, not fringed beneath; lateral tubercle 



of thorax (dose to the base I¥yssodrys. 



<;itAI*IIIKlTRlIK Lacord. Urography Horn. 



This genus at present contains two species : 



<jj. triaiiKiil ''**''' itiil<l . 1847 {Acanthoderes), Tr. Am. Phil. Soc. x, 45; Lee, 

 1852, Jour. Acad. Nat. Sci. ser. 2d, ii, 174. 

 Length 13 mm. = .52 inch. Habitat. — Ohio, Missouri, Texas, Louisiana, Ala- 

 bama, Georgia. 



[The surface color is reddish l)rowu ; the iifth ventral in the female 

 is prolonged and triangularly emarginate at tip, the tarsi in both 

 sexes are alike in width, tlie antennic are annulate, the thorax has 

 a broad dark stripe down the niid(Ue extending on the elytra behind 

 the scutellinn ; the surfiute of tiic elytra is sprinkled over with small 

 black dots and l)lotches, and Ix'hiiid tlie middle from the sides but 



