and Central American Malachiidae and Melyridae. 119 



Prothorax transverse, nearly as wide as the elytra, narrowing from 

 near the base, the sides rounded posteriorly and obliquely con- 

 verging forwards; very densely punctulate. Elytra moderately 

 long, subparallel in their basal third; impressed with minute 

 punctures, which are much more scattered than those on the pro- 

 thorax. Legs comparatively short. 

 Length 2|-3J mm. 



Hab. Mexico, Chilpancingo and Amula in Guerrero, 

 4,600-6,000 feet {H. H. Smith). 



Four specimens, probably including both sexes, the 

 supposed males having the prothorax a httle more developed 

 than the others; one female is in very fresh condition. 

 The olivaceous, albo-pilose, opaque, minutely punctured 

 upper surface and red legs are characteristic of the present 

 species. L. albidus is related to L. senilis, Lee. 



8. Listrus punctatulus, n. n. 

 Listrus punctatus, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 126 (part.), {nee Motsch.). 



(J. Head very broad ; antennae widened outwards, joints 5-10 

 serrate, 5 triangular, larger than 4, 6, or 8, these latter small, 6-10 

 transverse, 9 and 10 wider than 7, 11 short-ovate; prothorax large, 

 as wide as the elytra, convex, rounded at the sides, narrowed in 

 front ; fifth ventral segment unimpressed, truncate at the apex. 



$. Head much smaller; antennae shorter and more slender; 

 prothorax smaller, a little narrower than the elytra, narrowed from 

 near the base. 



Hab. Guatemala, Santa Rosa and San Geronimo, both 

 near Salama, in Baja Vera Paz. 



Gorham confused various species under the name 

 L. punctatus, the pair labelled by him as " types," and 

 from which the brief description was evidently taken, being 

 from Santa Rosa. The sexes differ greatly, the male 

 having an unusually broad head and prothorax. In its 

 robust build, the aeneous, rather coarsely cinereo-pubescent 

 upper surface, and the strongly punctured basal portion 

 of the elytra, L. punctatulus is very like certain Trichochrous 

 (such as the Mexican T. nigripes), from which the smoother, 

 non-setulose tibiae, the very short marginal ciUa of the 

 elytra, etc., will distinguish it. Three males and four 

 females are before me. The specific name, as pointed 

 out by Casey (Ann. N. York Acad. Sci. ix, p. 682), is 

 preoccupied. 



