STAPHYLINUS. 387 
and distinctly sinuate there, punctured like the head, with an obscure, short, smooth 
space in front of the scutellum. Elytra longer than the thorax. Hind body black, the 
three basal segments only very minutely variegate at the sides and middle with white 
hairs, the three apical segments more broadly and distinctly variegate with white at the 
base. Breast rather densely clothed with white pubescence; hind body beneath quite 
sparingly punctate. 
The unique individual found is a male, and has a slight broad emargination of the 
apical segment: the species has a resemblance to 8. cyanomelas, but is very distinct on 
account of its variegate hind body, longer basal joints to the antenne, and other cha- 
racters ; it is more nearly allied to S. optatus, but has no violet tint in its blue colour, 
has a larger head, with the eyes occupying a slightly less extent of the sides, and more 
elongate basal joints to the antenne. 
38. Staphylinus belti. (Tab. IX. fig. 23.) 
Minus latus, niger; capite thoraceque lete cyaneis, nitidis, crebre minus fortiter punctatis, nigro-pubescentibus ; 
elytris opacis, subcyaneis, nigro-tomentosis, parum distincte albido-nebulosis; abdomine nigro-tomentoso, 
albido-variegato. 
Long. 19 millim. 
Hab. Nicaragua, Chontales (Belt). 
This is a very distinct species, with eyes for this genus more than usually prominent, 
occupying just over one half the length of the sides of the head; the sides of the thorax 
are strongly sinuate in front, and there is an impunctate line along the middle. The 
hind body has the three basal segments spotted with white at the sides, not in the 
middle; the fifth and seventh segments are broadly marked with white. The under 
surface bears much white pubescence. Although of narrower form than the average of 
the genus, the middle coxee are widely separated; the ligula is broad, and its two 
slightly separated lobes are each distinctly rounded. 
A single female example is all I have seen. 
39. Staphylinus mendicus. 
Niger; capite thoraceque cyaneis, nitidis, crebre fortiter punctatis; elytris cyaneis, subopacis, nigro-pubes- 
centibus; abdomine subnitido, apicem versus albido-variegato. 
Long. 20 millim. 
Hab. Guatemata, Zapote (Champion); ? Costa Rica (Van Patten). 
Head broad, not narrowed in front, eye occupying rather more than half the length 
of the side, with a rather coarse but not close punctuation, so that the interstices are 
larger than the punctures. Thorax quadrate, but little narrowed and sinuate in front, 
rather coarsely not densely punctate, shining, with only a very narrow and indefinite 
impunctate line down the middle. Flytra of a similar colour to the head and thorax, 
but not shining; very indistinctly punctate. Hind body almost destitute of tomentum, 
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