84 Mr. G. C. Champion's Revision of the Mexican 



broad, deep, arcuate furrow behind, the disc in front of it appearing 

 gibbous. Scutelhim transverse. Elytra comparatively short and 

 broad, inflated posteriorly, leaving two abdominal segments exposed ; 

 densely scabroso-punctate. Legs slender. Wings fully developed. 

 Length 2^ mm. 



Hab. Mexico, Rio Papagaio in Guerrero, Pacific slope, 

 1,200 feet {H. H. Smith). 



The narrow, transverse, ivory-white callus extending 

 across the middle of the disc of each elytron is a unique 

 character amongst the known Malachiids. One specimen, 

 captured in October. 



Anthocomus. 



Anthocomus, Er., Entomographien, p. 97 (1840) (part.) ; 

 Horn, Trans. Am. Ent. Soc. iv, p. 109; Abeille de 

 Perrin, Ann. Soc. Ent. Fr. 1891, p. 355. 



The two small insects here referred to Anthocomus (type, 

 A. sanguinolentus, F.) have the anterior tarsi of the male 

 simply 5-jointed, and formed as in the female, i. e. there is 

 no modification of the basal joints of the male front foot 

 such as is to be found in Attains, including those wanting 

 the upper lobe to the second joint. The elytra in each of 

 them are slightly compressed posteriorly in the male (due 

 to some extent to shrinkage after death) ; but they are not 

 appendiculate or prolonged at the apex. A. fuscescens 

 (Gorh.) has the posterior tibiae of the female formed as 

 in the same sex of Attains varicns and Pseudattalus armatns. 

 One male only of each species is at present available for 

 examination. 



1 . Anthocomns fuscescens. 



cJ. Attains fuscescens, Gorh., Biol. Centr.-Am., Coleopt. iii, 



2, p. 319. 

 2- Attains ( ?) calcaratus, Gorh., loc. cit., t. 13, figs. 3, 3a. 



(J. Anterior tarsi simply 5-jointed, 1-4 short, 5 as long as 2-4 

 united; posterior tibiae feebly curved; elytra subparallel. 



$. Posterior tibiae (fig. 3a of Gorham) strongly curved, produced 

 at the apex into a long dentiform process which reaches as far as 

 the apex of the first tarsal joint; elytra much widened posteriorly. 



Hab. Panama, David, Tole, and Taboga Island. 

 Gor ham's description of A. fuscescens must have been 

 taken from a male, as he does not allude to the pecuhar form 



