CERAMBYCID^E 309 



two-fifths, the pointed apices narrowly, evenly and strongly rounded; 

 surface with not wholly concealed and rather coarse, well separated 

 punctures and three or four irregular though evident costules, bearing 

 strongly marked clusters of erect hairs of darker tint; under surface dull 

 rufous; femora clavate; first hind tarsal joint between three and four 

 times as long as wide. Length (9) 6.0 mm.; width 2.6 mm. Texas 

 (Columbus). 



Differs from versutus in its much stouter form, more transverse 

 prothorax and in the oblique elytral fasciae nearly as in Leiopus 

 alpha and others. 



Astylopsis n. gen. 



Although the general facies of the body in Lamia macula Say, is 

 nearly as in Leptostylus, the coxae similarly very widely separated 

 and the tarsi similarly thick, there are several structural differences 

 of importance, among which may be mentioned the much less 

 coarsely faceted eyes and the more evenly punctate sculpture of 

 the pronotum, also the narrowed front, smaller organs of the mouth 







and shorter antennal scape, with the outer angle at apex more acute. 

 For this species I would therefore propose the above generic name 

 and the Lamia guttataoi Say (Amniscus commixtus Hald.) is another 

 member of the genus; the latter name is unaccountably misprinted 

 sexguttatus, as a member of Leptostylus, by Hamilton (Tr. Am. Ent. 

 Soc., 1896, p. 119). 



It is highly probable that Leptostylus albidus Lee., from Arizona, 

 will also prove to be generically distinct when more carefully ex- 

 amined, as the erect hairs of the upper surface are wholly foreign 

 to the other species and usually constitute an important generic 

 character in this difficult group. Amniscus perplexus Hald., is 

 another apparently peculiar species, which seems to have been 

 misinterpreted by Hamilton; the prothorax is said to have "small 

 impressed punctures," but, more especially, the elytra are said to be 

 "entire at tip," cinereous, "hairy" and mottled with dark brown. 

 In Amniscus collaris Hald., the prothorax is said to be "thickly 

 punctured," which, as well as the subentire elytral apices, would 

 render it quite distinct from Leptostylus lecontei and crescenticus 

 described above. 



Nyssodrysina n. gen. 



The genus Nyssodrys of Bates, as now organized, is very com- 

 posite, containing many inharmonious elements. No type species 



