Forficulide and Chelisochidx, families of Dermatoptera. 129 
brevibus ; tibize anticze et intermedia, necnon postice, superne in 
dimidio apicali deplanatz et sulcatz ; pygidium parvum ; forcipis 
bracchia ¢ elongata et gracilia, vel brevia, robusta, subrecta, vel 
arcuatim incurva; margine interno dentato depressa vel subtriquetra 
margine interno acuto ; ? subrecta, inermia, elongata, vix incurva. 
This genus contains the typical species allied to Ch. 
morio; the species are mostly dark in colour, if not quite 
black, though Ch. plagiatus, while agreeing in structural 
characters, ditfers in its bright and variegated uniform. 
The type is Forficula morio, Fabr., Syst. Ent., p. 270, 
No. 6, 1775. From the East Indies and Pacific Islands. 
TABLE OF SPECIES. 
1, Pronotum capite haud multo latius. 
2, Pronotum elytra alze lete metallica. 1. glaucopterus, Borm. 
2.2. Color haud late metallicus. 
3. Forceps tenuis ; pygidium bilobum. 2. ater, Borm. 
3.3. Forceps validus; pygidium inte- 
grum. 
4, Klytra et ale nigre; corpus ni- 
grum, tarsis exceptis pallidis ; 
antenn pallido-annulatee . . 3. morio, Fabr. 
4,4. Elytra colorata. 
5. Corpus nigrum ; elytra alzque 
auriantiace ; species australica 4. australicus, Gou. 
5.5, Colore rufo, testaceo, flavo et 
fusco leete variegato ; species 
africana . . . . . . . «5. plagiatus, Fairm. 
1.1. Pronotum capite multo latius . . . 6. malgachus, Borm. 
Chelisoches stratioticus of Rehn is probably only a finely 
developed variety of Ch. morio, with which I have always 
placed it in my collection. 
Chelisoches tenebrator, Kirby, may perhaps require another 
genus, as the feet seem to have a somewhat distinct 
structure. 
Genus 5.—PROREUS,* nov. gen. 
Statura mediocri; cum Chelisoche congruet; differt autem antennis 
gracilioribus, segmento 4 ovato, vel cylindrico, nec incrassato, nec 
clavato nec conico. 
* Gr. mowpevs = pilot. 
TRANS. ENT. SOC. LOND. 1907.—PART I. (JUNE) 9 
