250 [December 



In the female the antennas are long and entirely simple. The male 

 antennae are less than half as long as those of the female, and bear a 

 rather close resemblance to those of the % O^ceticus. Head, projected, 

 but not prominently visible from above; clypeus broad. Prothorax 

 well developed ; thorax, flattened above. In the female the head is 

 larger than in the male. Labial palpi small in the male, pressed against 

 the front which they do not exceed in either sex, but are more promi- 

 nent in the female. The maxillae are moderately developed in the 

 female. I do not detect their presence in the male. Beneath, the 

 eyes, which are well developed, are approximate. The 9 hind tibiae are 

 spurred at the base of the joint, and have a lateral, longer spur at about 

 the middle of the joint. The anterior wings, in the male, are narrow, 

 not much dilated on external margin. Costa straight, external margin 

 evenly rounded, short, since it is not oblique, the internal margin being 

 nearly as long as the costal margin. Discal cell closed. First and se- 

 cond m. nervules springing from one point. Third, a little removed. 

 Fourth, thrown off slightly nearer the third than usual, depressed, since 

 it joins the margin at internal angle. Interspaces, narrow. Internal ner- 

 vurj, very sinuate, joining the internal margin before the angle. The 

 internal margin is sinuate, following the course of the nervure. In the 

 female the external margin is more oblique; the internal margin is 

 straight; the nervure is straight and joins the external margin at the 

 internal angle; the median nervules are straighter, longer, the fourth 

 joins the external margin much before the internal angles. There are 

 but three median nervules, while the costal nervulation differs markedly. 

 In the male the c. nervure throws off three divaricating nervules at the 

 point of anastomosis with the curved discal cross-vein. In the female 

 the costal nervulation is normal ; in both sexes a discal nervure is 

 thrown off from the centre of the discal cross-vein to external margin. 

 There is a corresponding disparity between the sexes in the nervula- 

 tion of the secondaries. Abdomen, tapering in the male, exceeding 

 the secondaries; genitals concealed. 



The structural differences between the two specimens I have before 

 me are very great, and I with difficulty believe them to belong to one 

 species. Nevertheless these differences are mostly neurational, if we 

 except the antennal and, perhaps, the maxillary characters. The two 

 specimens are sent as S and 9 of one species by Prof. Poey, under one 

 number. The general coloration is similar, s^^juammation sparse. In 

 case of error, I propose, that the generic and specific names I here 

 adopt, shall be retained for the male specimen. I am prepared here 



