14 MONOGRAPHIA CHALCIDITUM, 
Sp. 2. Ptero. dimidiatus. Mas et Fem. Nigro-piceus fulvo 
warius, scutellum flavo-albidum, antenne flave, pedes flari, 
Jemora fusca, proale fusco fasciate. 
Pteroptrix dimidiatus. Westwood, Lond. and Edinb. Phil. 
Mag. III. No. 17, 344. 
Nigro-piceus: oculi et ocelli picei: antennze flavee; articulus 1". 
 obscurior: thoracis suture fulvze: mesothoracis scutellum flavo- 
albidum: abdomen nigrum; tubula flava: pedes pallide flavi; 
coxze piceze; femora fusca, apice et basi flava; tarsi apice fulvi ; 
meso- et metatibize basi fusca: ale limpide; squamulz fusce ; 
nervi fusci, basi pallide flavi; proalz fusco late fasciate, (Corp. 
long. lin. 3—4; alar. lin. 3—2.) 
Var. B.—Caput supra fulvum. 
July; on windows, near London. 
Secrio III. 
Mas.——Corpus planum, breve, parum nitens, fere leeve, parce hirtum: 
caput transversum, brevissimum, thorace vix angustius; vertex 
latus, convexus; frons abrupte declivis, non impressa: oculi 
mediocres, subrotundi, non extantes : ocelli 3 vertice triangulum 
fingentes: antennz 8-articulatze, subfiliformes, late, pubescentes, 
corpore non breviores, ad os insertee; articulus 1". longus, gracilis, 
fusiformis; 2°. brevissimus; 38"*. et sequentes lati, sublineares ; 
7"*, 6°. paullo longior; 8"*, fusiformis, paullo brevior et angustior: 
thorax ovatus: prothorax brevissimus, supra vix conspicuus : 
mesothoracis scutum transyersum, parapsides bene determinate, 
scutellum magnum, subrotundum, paullo quam longum latius: 
metathorax brevis: abdomen sublineare, depressum, sessile, nitens, 
glabrum, apice rotundatum, thorace angustins non longius; seg- 
menta transversa, subaequalia; pedes mediocres, simplices; cox 
parve; femora gracilia; tibiae rectze ; tarsis articulus 1"*. longus, 
2". et 3"*. breves, 4". paullo longior; pulvilli parvi: ale ample, 
proalis nervus solitus costae dimidio multo longior, ulnaris hume- 
rali brevior, cubitalis sat longus, radialis vix ullus, stigma magnum 
subrotundum: metalis nervus simplex costae dimidio longior. 
Sp. 3. Ptero. Hemera, Mas. Piceus fulvo varius, antenna 
Susce, pedes flavi, ale limpide. 
