294 CLARENCE M. WEED. 



thirteenth segments there is more of the white color and less of the 

 violet than in the others ; the tenth has two long appendages, one 

 on either side of the lateral black lines, and two very small ones, 

 one on each of the white bands ; the eleventh has also two appen- 

 dages on the lateral lines, but not so long as the others, and two on 

 the white bands longer than the rest ; the twelfth segment has only 

 two on the lateral lines alid shorter than the others. On the anal 

 cover there is a black triangle. The horny feet are black, and the 

 fleshy ones of an ashy dark violet with their extremities black, and 

 on their upper part a small protuberance of an ash color inclining 

 to yellow. Length of the larva is 30 millimeters. 



The larva feeds on one of the Aristolochise. It remains about 

 thirteen days in the pupa state. 



Santiago de Cuba June 16, 1888. 



Descriptions of some new or little known 

 IfllCROOASTERIX.K. 



BY CLARENCE M. WEED. 



Soon after the publication of my " Notes on Some Illinois Micro- 

 gasters,"* Mr. E. T. Cresson kindly offered to send me the Micro- 

 gasterinre in the collection of the American Entomological Society 

 for arrangement and study, and the present paper is the result of a 

 preliminary examination of the material therein contained. 



IVIicroplitis maturns n. sp.— Length 3.5 mm. % J. Black; antennae, 

 clypetis and mandibles ferru.ginons ; palpi light yellow ; tegiilfe and legs (except 

 tarsi and posterior coxse, which are fuscous) testaceous; anterior half of abdo- 

 men, except tergum of first segment, also testaceous. Mesonotnm slightly shin- 

 ing, punctate. Scutellum punctate. Metanotum reticulate, with median and 

 lateral carinfe. Tergum of first abdominal segment rugulose ; remaining terga 

 smooth and shining. Wings hyaline; veins yellowish brown; stigma, except 

 spot on inside, darker ; areolet subrhomboidal, large ; ovipositor concealed. 



Described from four specimens from New York and Connecticut 

 in the collection of the American Entomological Society. The depth 

 of coloring of the abdomen varies considerably. One of the speci- 

 mens was labeled M. maturus, Cresson MS., and I have adopted the 

 name thus proposed. 



» Bull. 111. St. Lab. Nat. Hist. Vol. Ill, Art. I, p. 1. 



