JQO Orthoirhapha brachyceia. 



corners drawn out in a small, lobe-shaped point; the upper piece lies 

 thus between the upward bent sides of the lower. The genitalia are 

 not unsymmetrical in construction, but they are turned in such a 

 way that the ventral side may be looking nearly upwards; both the 

 eighth segment and the apical parts take part in the turning, first the 

 eighth segment being turned somewhat in relation to the seventh, and 

 then again the apical parts being turned in relation to the eighth seg- 

 ment. It is not possible to decide from the position what is the dorsal 

 and what the ventral side of the genitalia, but by considering the way 

 in which the eighth dorsal segment overlaps the ventral, and by com- 

 parison with Argyramoeha the faet may be ascertained. The female 

 genitalia resemble those in Argyramoeha^ only the spine-combs are 

 here placed just on each side and not dorsally; there are the same 

 converging hairs as in Argyramoeha^ but they are here more con- 

 cealed. Legs with bristles on the ventral side of the posterior femora 

 and on all tibiæ, but very small on the front tibiæ; the posterior 

 tarsi have bristles, the front tarsi delicate, erect hairs on both sur- 

 faces; the posterior tibiæ have apical spurs. The claws are small; 

 there are distinct pulvilli and a very small empodial lobe. Wings as 

 in Argyramoeha, but there is no veinlet at the angular bend of the 

 radial vein; the upper branch of the cubital vein may in the same 

 species (morio) be rounded or angular at the base, and with or with- 

 out a short veinlet ; also the lower hind corner of the discai cell may 

 be without a veinlet or with a small veinlet, representing the branch 

 otherwise dividing the third and fourth posterior cells. Costa at the 

 base with a somewhat large hook. Alula developed, fringed with 

 somewhat scaly hairs; frenulum with long hairs. 



As far as I am aware the larva of Hemipenthes is not described. 

 I have myself only examined the pupa; it is yellow; on the front of 

 the head, at the base of the antennal sheaths there are two strong, 

 flat, straight spines which are longitudinally striated, and at the end 

 of each of the sheaths there is a low, triangular pyramidal spine; on 

 the lower side of the head at the base of the proboscis there are 

 two low, triangular spines. At each side of the proboscis, about at 

 the base of the leg-sheaths, the integument forms a triangular pro- 

 tuberance. On head and thorax there are some bristles. In the 

 middle of the first abdominal segment, and in the whole breadth of 

 the following segments there is on the dorsal side a transverse row 

 of chitinous staves parallel arranged with the hind points protruding; 

 there are moreover on the first dorsal segment very long and strong, 

 at the apex curved hairs, and on the following segments weaker and 

 shorter hairs which are shortest in the middle of the segments; on 



