1922] NATURAL SCIENCES OF PHILADELPHIA 131 



Type: c? ; Dapitan, Mindanao, Philippine Islands. (From 

 C. F. Baker.) [Hebard Collection, Type no. 786.] 



Size small, form compact, limbs short. Vertex weakly silicate 

 and moderately declivent to acutely rounded apex, which is 

 strongly sulcate to the apical marginal border and fails to extend 

 cephalad as far as the plane of the face by half the width of the 

 first antennal joint. Maxillary palpi very elongate, fourth joint 

 two-thirds as long as the third, fifth two and one-half times as 

 long as the fourth. Margin of pronotal lateral lobes broadly 

 convex from the rather deep humeral sinus to the ventro-cephalic 

 angle. Metanotum hyaline and swollen beneath the stridulating 

 field of the tegmina. Dorsal abdominal tergites unspecialized, but 

 those proximad thickly supplied with fine hairs. Supra-anal plate 

 very small and inconspicuous. Cerci very elongate, curving weakly 

 outward, then strongly inward distad; shaft swollen proximad, 

 then tapering, the distal portion slender and cylindrical to the 

 bifid apex. Apex itself rounded conical, with a projection at its 

 base on the inner side slightly more slender but twice as long, 

 tapering to a minute uncinate tooth, which is curved ventrad. 

 Subgenital plate tapering strongly proximad, thence elongate and 

 slender but extending caudad only as far as proximal two-thirds of 

 cercus; apex deeply and narrowly V-emarginate, the slender fingers 

 thus formed very delicate, with apices rounded. Genicular lobes 

 of femora rounded. Ventral femoral margins with the following 

 minute spines distad. Cephalic internal 2 and 3, cephalic external 

 0, median internal 0, median external 3 and 3, caudal internal 1 

 and 1, caudal external 4 and 5. 



General coloration pale yellowish green, probably pale green in 

 life. Antennae with first two joints suffused with whitish dorsad 

 and with large brown suffusions ventrad, succeeding joints with 

 homologous brown suffusions, which become rapidly weaker and 

 disappear distad. Pronotum with symmetrically arranged streaks 

 of heavier pigmentation and with a minute brown fleck between 

 the sulci on each side of the median carina. Tegmina immaculate 

 except for a small brown suffusion mesad in the stridulating field. 

 Limbs immaculate except for a brown line on each side of the 

 enlarged proximal portions of the cephalic tibiae. 



Length of body 14, length of pronotum 4.7, length of pronotal 

 lateral lobe 3.4, greatest (caudal) height of pronotal lateral lobe 

 3.4, length of tegmen 21.2, width of tegmen 5.7, length of cephalic 

 femur 3.8, length of caudal femur 11.8, length of cercus 5 mm. 



The type of this interesting species is unique. 



Mirollia cerciata new species. Plate XI, figures 14, 15 and 16. 



This insect agrees closely with M. aeta here described, in general 

 form, but is quickly separated by the very different vertex, punctate 

 tegmina and distinctive male genitalia. 



Type: c? ; Labuan, British North Borneo. [Hebard Collection, 

 Type no. 787.] 



