178 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



forked as in forewiiig; in both wings the cross veins from radius to 

 medius are ahnost in line. 



In the male the uplifted penultimate ventral segment shows at base 

 a rounded lobe. 



The female resembles the male, but the cerci are normal, basal 

 joint not elongated nor with spine; the ventral plate of female is 

 extremely large and covers the next segment, the tip entire. 



Length of f orewing, 10 mm, ; width, 3 mm. 



From Liu Ngai Si, near Kuanshien, September 20-30, 3,500 feet 

 (holotype) ; Beh Luh Din, August 7-25, 6,000 feet; and Mu Sang Tsai, 

 10 miles northwest of Weichow, July 2-6, 8,000 to 10,000 feet. Holo- 

 type, U.S.N.M. No. 53141. Paratypes in U.S.N.M. and M.C.Z. 



In the wholly pale body and legs it is like N. fratema; from 

 fratema it differs in the elongate cereal joint longer, the black cereal 

 spine, in the small rounded piece at base of penultimate ventral 

 segment, etc. 



The three known species are from Japan, Formosa, and Malacca. 



Genus NEOPERLA Needham 

 NEOPERLA MINOR Chn 



Several from Mount Omei in July and August. Described from 

 Hangchow. 



NEOPERLA TINGWASHANENSIS Wu 



One from Kuanshien, July 18-20, 5,200 feet. 



Genus PARAGNETINA Klapalek 



PARAGNETINA INDENTATA Wu 



Two specimens, rather small, appear to belong to this species, one 

 from Kuanshien and one from Si Gi Pin, August 5-9, 6,000 to 7,000 

 feet. Also from Pei Bay, June (G. Liu). 



Genus PELTOPERLA Needham 

 PELTOPERLA SINENSIS Wu and Claassen 



One from 9 miles southwest of Tatsienlu, June 25-27, 8,500 feet. 



Family SIALIDAE 



The genera of Sialidae known to occur in China, or some from 

 nearby, can be separated as follows : 



1. No ocelli; pronotnm twice as broad as long; fourth tarsal joint 



with plainly bilobed tip (subfamily Sialinae) 2 



With ocelli ; pronotum about as long as broad ; fourth tarsal 

 joint scarcely, if at all, bilobed (subfamily Corydalinae) 3 



