EUMICRUS. 66 
undoubtedly a valid genus, the peculiar structure of the maxillary palpus and of the 
trochanters being associated with a perpendicular, exposed, rather large pygidium. 
The genus is a very widely-distributed one, and is no doubt present in all the temperate 
and warm continental regions of the globe. 
§1. Thorax bifoveolate (or quadrifoveolate) at the base, the fovee frequently minute. 
1. Eumicrus brunneus. (Tab. II. fig. 21.) 
Scydmenus brunneus, Schaum, Analecta ent. p. 28°. 
Eumicrus brunneus, Schauf. Mon. Scydm. in Nov. Act. Leop.-Carol. Nat. Curios. xxxiii. p. 89’. 
Hab. Mexico, Teapa 2, Yautepec (Llohr, Hoge), near the city, Tehuantepec, Acapulco 
(Hoge); Guatemata (Sai/é), near the city, San Gerénimo, San Joaquin, Senahu, Cahabon, 
Chacoj (Champion); Nicaragua (Sal/é); Panama, Volcan de Chiriqui, David, San 
Miguel in the Pearl Islands (Champion).—Soutn America, Colombia! ?. 
The male of this species has the front tarsi rather broadly dilated, but otherwise very 
closely resembles the female. . drunneus was met with in abundance near the city of 
Guatemala and also in the Pearl Islands; the individuals from the latter locality are 
rather smaller and darker, but I can find no evidence of any distinction of a specific 
character. Schaufuss has pointed out? that Schaum was deceived! in supposing the 
thorax to have only a single fovea on each side. 
Found on the sandy banks of small streams beneath decaying leaves, &c. (Champion). 
2. Kumicrus cognatus. 
Scydmenus cognatus, Schaum, Analecta ent. p. 29°. 
Eumicrus cognatus, Schauf. Mon. Scydm. p. 88’. 
Hab. Nicaracua, Managua ?.—SoutH America, Colombia ! 2. 
Schaum having been mistaken in regarding the thorax of E. brunneus to be only 
bifoveolate, I fail to detect in the description any character by which the two could 
otherwise be distinguished, though Schaufuss retains them as distinct. 
3. Eumicrus vestalis. 
Eumicrus vestalis, Casey, Contr. Col. N. Amer. p. 85°. 
Hab. Nortu America, Arizona !.—Mexico, Northern Sonora (Morrison), La Noria in 
Sinaloa (Hége). 
This species is excessively near to H#. brunneus, but is certainly distinct, as the front 
tarsi of the male are only feebly dilated; it is also rather more elongate in form. I 
can detect no sexual difference except that of the front feet. 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, October 1887. K* 
