MONACHUS. 95 
15. Monachus semiviridis. 
Black, the basal joints of the antenne and the thorax fulvous, the latter finely rugose-punctate ; elytra 
greenish-neous, distinctly punctate-striate, the apex nearly impunctate. , 
Length 2 line, . 
Hab. GuatEMaLa, Paso Antonio (Champion). 
Very closely resembling M. puncticollis, but apparently distinct. The single speci- 
men obtained is a male; nevertheless, the differences shown between this specimen and 
the female of MZ. puncticollis do not seem to me to be sexual. In the present insect, 
which is much smaller and more parallel than M. puncticollis, the head is obscure 
piceous ; the antenne are black, with the exception of the basal four joints, these latter 
being fulvous; the thorax is of the same shape and sculpture as in M. puncticollis, 
although the punctures are proportionately finer, but the elytra are differently punctured, 
the punctuation being very distinct to below the middle, and the interstices are not 
finely granulate but shining; and the prosternum is black (instead of fulvous) and not 
so transverse. In this genus the female insect is, asa rule, more strongly sculptured 
than the male, and I believe, therefore, that M. semiviridis is really distinct from 
MM. puncticollis. 
16. Monachus sordidulus. 
Monachus sordidulus, Suffr. Linn, Entom. xv. p. 151°. 
Hab. Panama, Taboga I. (Champion).—Brazit, Bahia!. 
This is the smallest species of Monachus known to me from our region, and it agrees 
in every respect with Suffrian’s description; the general colour of the insect is pale 
flavous. Numerous examples were captured by Mr. Champion. 
17. Monachus simplex. 
Fulvous; antenne (the basal joints excepted) black; thorax finely but distinctly punctured ; elytra very finely 
punctate-striate, the punctures strongly impressed at the base, fulvous, the extreme basal margin blackish ; 
tarsi piceous. 
Length 1 line. 
Hab. Nicaracua, Chontales (Janson); Panama, Bugaba, Volcan de Chiriqui, Caldera, 
David (Champion). 
The nearest allied species to VU. simplex is apparently J. sordidulus, Suffr., which 
is, however, a much smaller insect, being one of the smallest of the genus, and differs 
also in several other details. /. simplex may be known by its unicolorous fulvous 
upper and under sides. ‘The basal three or four joints of the antenne are of the same 
colour, the other joints being black and distinctly thickened. The thorax is at least twice 
as broad as long, but rather strongly narrowed in front, the sides slightly rounded ; the 
surface is somewhat closely impressed with rather elongate punctures, the interstices 
being minutely granulate; and the basal margin is furnished with the usual deeper 
