18/1.] ON NEW INSECTS FROM YUNAN. 247 



the tip, approaching the mesosternum. Abdomen testaceous, with 

 a piceous stripe which extends from the base to beyond half the 

 length. Fore wings cinereous towards the tips, with numerous 

 blackish points, which mostly form very irregular bands ; a row of 

 subcostal black more determinate points. Hind wings cinereous, 

 veins black. 



Length of the body 15 lines ; expansion of the fore wings 30 lines. 



The prosternal spine is shorter, stouter, and more obtuse than that 

 of C. rubiginosa, which this species closely resembles. The speckled 

 fore wings distinguish it from C. sjrissa. 



3. Mast ax innotata, Walker, n. sp. 



Male. Ferruginous, slender. Head elongate, obliquely but ab- 

 ruptly ascending; tip of the vertex conical, prominent", slightly 

 bilobed; front long, oblique, with four well-defined keels; inner 

 keels converging towards the face; outer keels diverging towards 

 the face ; clypeus and fore part of the face tawny. Antennae black, 

 short, slender, tawny towards the base. Eyes elliptical, prominent. 

 Prothorax short, sellate, widening hindward, with a slight keel ; a 

 blackish mark on each side in front of the transverse impressed line. 

 Hind femora as long as the abdomen. Hind tibiae slender, piceous, 

 a little longer than the hind femora; spines small. Fore wings 

 narrow, cinereous, with two pellucid marks near the tips, the mark 

 on the hind border larger and more remote from the tip than the 

 other, which is costal. Hind wings cinereous hyaline, with a black- 

 ish costal line ; veins black. 



Length of the body 10 lines ; expansion of the fore wings 20 lines. 



4. Oxya diminuta, Walker, n. sp. 



Male. Tawny, slender. Head and prothorax with two ferruginous 

 stripes, which do not extend beyond the fourth transverse impressed 

 line of the prothorax. Head slightly elongate ; vertex with two 

 keels between the eyes ; tip depressed, transverse, subrhomboidal ; 

 front hardly oblique, with four strongly marked keels ; inner keels 

 slightly curved towards the vertex, parallel towards the face ; outer 

 keels diverging towards the face. Antennae slender, piceous towards 

 the tips. Prothorax with a keel, which is hardly apparent except 

 towards the hind border ; the latter rounded. Prosternal spine long, 

 acute, rather slender. Spines of the tibiae with black tips. Wings 

 half developed. Hind wings cinereous hyaline, veins black. 



Length of the body 10 lines. 



5. Caloptinus incompttjs, Walker, n. sp. 



Male. Tawny, testaceous beneath. Head short ; vertex with two 

 slender furrows between the eyes ; tip flat, subrhomboidal ; front in 

 structure like that of C. inamcenus. Antennae slender. Prothorax 

 with a slight keel and with the usual transverse impressed lines ; 

 hind border elongated, slightly angular. Prosternal spine stout,' 

 long, slightly acute. Hind legs testaceous ; spines of the tibiae with 

 black tips. Fore wings cinereous, tawny towards the base, with 



