ICO 
Bulletin M'iscoiis'ui yaturaJ Histori/ ^^oc'ict ij. 
[Vol. 5. No. 3. 
Described from one female collected by Mr. Charles Schaefifer 
at Esperanza Ranch, Brownsville, Texas. 
This resembles in color the West Indian Calyptus thoracicus 
Ashmead, but differs by its much smaller size, and in having only 
26 joints instead of 35 joints to the antennae. 
FAMILY ALYSIID^. 
Acrisis americanus sp. nov. 
Male. Length 1.75 mm. Thorax piceous, head, plenrte, coxie, legs, 
and second abdominal segment bro^v^lish-yellow. Wings hyaline. 
Head smooth and shining, faintly shagreened above ; transversely 
qnadrate, the temples rather narrow. Eyes moderately small, bare. 
Cheeks one-half as long as the greatest length of the eye. Antennfe 
slender, filiform, not qnite as long as the body, abont 18-jointed, the 
joints poorly difl-'erentiated and difficnlt to connt ; second to sixth joints 
abont equal, each about four or five times as long as thick, following 
growing shorter. Palpi pale testaceous. Mesonotum shining, 
shagreened, trilobed, the parapsidal furrows deep anteriorly, approxi- 
mated and less distinct posteriorly, where they become confused with 
some other longitudinal striate sculpture. Scutellum shagreened like 
the mesonotum, with a broad crenulated transverse furrow across the 
base and a semi-circular fovea just before the center. Metathorax 
finely rngulose, not at all areolated. Pleurae rugulose above and 
shagreened below; dark above, but pale yellowish below on the meso- 
pleura?. Abdomen ovate, sessile, the first segment piceous, a little 
longer than wide, its base two-thirds as wide as the apex, surface 
finely aciculate ; second segment aciculate, pale yellow, longer than 
the first and twice as wide. Following segments indistinctly separated, 
shining piceous. Legs moderately stout, the posterior femora strongly 
incrassated, their tibite slightly so. Apical joint of all tarsi piceous. 
Wings hyaline, stigma and venation very pale fuscous. Two cubital 
cells ; first cubital, first discoidal and submedian cells all distinctly 
se])arated from one another. Radius and cubitus obsolete beyond the 
first transverse cubitus ; subdiscoidal nervure distinct at its base. 
Described from a single male sent me by Dr. M. T. Thompson. 
It was bred by him from an unidentified gall collected at 
Worcester, Mass. 
