1922] NATURAL SCIENCES OF PHILADELPHIA 155 



the Group Holochlorae, while in the astonishing male genitalic 

 development closest approach appears to be found in the Group 

 Isopserae. 



In general appearance, however, the insect strongly suggests a 

 small, uniformly colored species of the genus Psyra. 



Genotype. — Pseudopsyra mirabilis new species. 



Size medium for the group, form much as in the genus Psyra. 

 Head with eyes extremely prominent, bead-like. Vertex very 

 small, in dorsal aspect appearing only as a smooth narrowing of the 

 occiput cephalad without sulcatum, in cephalic aspect with face 

 nearly vertical, narrowly and irregularly sulcate to ventral margin, 

 where it is briefly separated from the facial fastigium, its lateral 

 surfaces fully occupied by the large lateral ocelli. Pronotum much 

 as in Psyra, surface smooth, lateral lobes with length equal to width 

 and with humeral sinus decided. Tegmina and wings fully de- 

 veloped, the former with venation much as in Psyra. Tegmina 

 with mediastine vein distinct, median vein sending a forked branch 

 and two or three distal branches obliquely across the discoidal field. 

 Mesosteriium with lobes small, triangular with apices rounded, 

 metasternum with lobes much larger and more rounded. Male 

 genitalia very highly specialized, the subgenital plate bearing ex- 

 tremely elongate styles. Femora supplied with minute spines on 

 the usual margins for the group, genicular lobes bispinose. Ce- 

 phalic tibiae with auditory foramina internally conchate, externally 

 apert; dorsal surface weakly sulcate, its internal margin with three 

 and one distal, small spines. 

 Pseudopsyra mirabilis new species. Plate XIII, figures 16 and 17. 



This plainly colored species shows one of the highest types of 

 male genitalic specialization we have encountered, such occurring 

 not only in the ultimate tergite but in the cerci and subgenital 

 plate as well. 



Type: d 1 ; Island of Penang, Malay Peninsula. (From C. F. 

 Baker.) [Hebard Collection, Type no. 799.] 



In addition to the characters given in the generic treatment, 

 we note the following. Tegmina with ulnar vein distad sending a 

 branch to the nearer fork of the first branch of the median vein, 

 from there to the sutural margin strongly flexuous. Cross- veins 

 of tegmina numerous, many of these straight and transverse. 

 Anal tergite produced in a large shield-shaped plate, which is 

 strongly deflexed with dorsal surface concave, this plate distad is 

 nearly rectangulate emarginate, the emargination with lateral 

 margins weakly divergent to its base, where the dorsal surface of 

 the plate is briefly and very strongly concave in a V-shaped area. 

 Supra-anal plate concealed beneath production of anal tergite. 

 Cercus very large and elongate cylindrical, extending as far caudad 

 as the subgenital plate, weakly tapering and directed ventro- 



