ESTHESOPUS. 441 



1. Esthesopus humilis, (Tab. XIX. figg. 20; 20 a, prothorax.) 

 Esthesopus humilis, Cand. Monogr. Elat. iii. p. 284 \ 



Esthesopus murinus, Cand. loc. cit. p. 284 2 . 



Hab. North America 1 . — Mexico 2 (Salle, coll. Janson), Minas Viejas (Br. Palmer), 

 Playa Vicente (Edge), Teapa in Tabasco (coll. Janson), Yucatan (Pilate, in coll. 

 Janson), Temax in North Yucatan (Gaumer) ; Guatemala, Panzos (Champion); 

 Honduras (Salle) ; Nicaragua, Chon tales (Janson) ; Panama, Bugaba (Champion). — 

 Colombia ; Brazil ; Cuba. 



This species may be readily distinguished from the allied forms with a distinct 

 double system of punctuation on the thorax by the larger punctures being much 

 coarser towards the sides and base than they are upon the middle of the disc, those in 

 the basal depressions being coarse, deep, and conspicuous. The type of E. humilis is 

 an abraded example, reddish-castaneous in colour, with the thorax abnormally formed ; 

 and that of E. murinus a dark specimen with the pubescence intact ; both are contained 

 in the Janson collection. The sculpture of the thorax is precisely similar in the two 

 insects, though the coarse conspicuous punctures near the base are not mentioned by 

 Dr. Candeze in his description of PI. murinus. In colour and size it is as variable 

 as many of the allied forms. Specimens of E. humilis were mixed with the series of 

 E. hepaticus and E. troglodytes in the Janson collection. 



One of the two examples from Yucatan is coloured like the type of E. humilis ; 

 others, from Teapa and elsewhere, are intermediate in this respect between E. humilis 

 and E. murinus. A specimen from Yucatan is figured. 



2. Esthesopus hepaticus. (Tab. XIX. fig. 21.) 



Cardiophorus hepaticus, Erichs. in Germar's Zeitsehr. fur Ent. ii. p. 336 l . 

 Esthesopus hepaticus, Cand. Monogr. Elat. iii. p. 283 2 . 



Hab. Mexico, Tapachula in Chiapas (Hbge) ; Guatemala, Zapote and San Geronimo 

 (Champion) ; Panama, Tole (Champion). — South America 2 to Brazil 1 . 



Central-American specimens are smaller and narrower than those from Colombia and 

 Brazil in the Janson collection, but they vary in this respect, as well as in colour. 

 The thorax is parallel behind and arcuately narrowed in front; the punctuation is 

 close, and consists of minute and moderately coarse punctures intermixed, the latter 

 widely scattered but becoming more numerous towards the sides in front. The elytra 

 are of the same width as the thorax, and subparallel in their basal half. The body is 

 flattened above. The North-American insects formerly referred to E. hepaticus 

 apparently belong to E. parcus and E. dispersus, Horn. 



A specimen from San Geronimo is figured. 



biol. centr.-amer., Coleopt., Vol. III. Pt. 1, January 1896. 3 L 



