P. ESBEN-PETERSEN, NEUROPTERA AND MECOPTERA. 13 



Mjöbergia n. g. 



Wings rather long and slender and with acute tip, The 

 costal area in the forewing with two or three irregular rows 

 of cells in its basal two thirds part. Bs arises further out 

 than the fork of Cu^. M and Cu^ fork opposite to each 

 other. The free basal part of Cu^ very short. 2 A and 3 A 

 fuse in a point; both are forked. Cwia and Cui^ run parallel 

 to Gu^ and to the hind margin. Anterior and posterior 

 Banksian line present. The nervature very dense and irre- 

 gular. In the hindwing the costal area has one row of cells. 

 Rs arises close to the base of the wing ; one regular and one 

 irregular crossvein before its origin. Anterior Banksian line 

 present. lA short and bent in the shape of a right angle. 

 Legs short and stout. Tibia two thirds the length of femur. 

 Tarsus about twice as long as tibia. First tarsal joint a little 

 longer than fifth, which is as long as second, third and fourth 

 united. Spurs straight, and as long as first tarsal joint. 



Genotype the below described species. 



The genus is nearly allied to Protoplectron, but the shape 

 of the wings and the density and irrregularity of the nerva- 

 tion offer good and distinct generic characters. The genus 

 may be regarded as a highly specialized one within the 

 Creagrini. 



Mjöbergia fulviguttata n. sp. (pl. 1, fig. 7). — Head and 

 thorax reddish yellow. A broad blackish band from eye to 

 eye, enclosing the insertions of the antennae. Tip of the 

 apical joint of the palpi and of the mandibles dark. Antennae 

 close together at their base, as long as head, pro- and meta- 

 thorax together, blackish, yellowish annulated at the join- 

 ings; the club distinct, almost completely yellowish ven- 

 trally. Prothorax a little longer than broad, reddish yellow 

 and without markings; front angles rounded; a very deep 

 transverse furrow one third from front margin. Mesothorax 

 reddish yellow. Metathorax reddish yellow (in a matured 

 specimen powdered with white) and with two brown spöts 

 close to the front margin. Abdomen greyish yellow, a little 

 darker towards apex (in the adult specimen the abdomen is 

 dark brown with narrow yellowish hind margin of each seg- 



