1886.] 277 [Hagen, 



bur's description of the appendages of the male of M. lutescens 

 is the only one anterior to my synopsis. Mr. M'Lachlan, 1868, 

 described and figured the appendages of ten species. I have 

 figured in the meantime as many as I could, but other duties 

 prevented their publication. The study of the previous stages 

 so splendidly advanced by Prof. Fr. Brauer, I tried to follow in my 

 papers on the larvae of Hemerobina (1872), Myrmeleon and Asca- 

 laphus (1873). The study of Asa Fitch's types, of those of Brauer, 

 Schneider and some of Zetterstedt, Erichson and others, together 

 with my notes of types contained in other collections has induced 

 me to publish what I know about this interesting family. 



Micromus Ramb., Neur., p. 416. 



Front wings with the costal space strongly narrowed at base, 

 the transversals not furcated nor recurrent. This character is in- 

 deed the only prominent one to separate Micromus from Hemero- 

 bius ; the last joint of the palpi is flat and pointed. The genitals 

 of the male are sometimes difficult to be made out, even in alcoholic 

 specimens. The last dorsal segment is split from below, perhaps 

 sometimes entirely ; in the cavity behind this split two supe- 

 rior appendages are to be seen ; they are straight with the tip 

 more or less curvate, and may reach out of the split ; the last ven- 

 tral segment forms a spoonshaped or elongated valve, which cov- 

 ers the last abdominal segment ; between both segments are deeply 

 inserted the two inferior appendages, long, spine-like and more or 

 less curved ; between these originates the long dagger-like penis, 

 split more or less on its lower side, at least at the tip. It is very 

 rare that all these five parts are easily visible. The females have 

 the abdomen sloping at the apex, cut straight, with an oval open- 

 ing at the end, without a visible ovipositor. The last joint of the 

 tarsi (Ceylon species) with a large round membranous planula ; as 

 it cannot be seen in dry specimens, it may be present also in other 

 species. 



There is nothing known about the early stages of Micromus. 

 I have not tabulated the species, as the number of the sectors of 

 the front wing give them a very easy clew. There are seven sectors 

 in two species, six in two, five in three, four in seven, three in one. 

 The first four species have oblique bands cut by longitudinal ones 

 on the front wings. The relative length of the wings and of the 

 antennae are good characters. 



