18 



occipul a little more than a third as long as wide; epicranium somewhat 

 short lozenge-shaped; same distance between antennae as in Petrophora. 

 Clypeus, however, shorter, hardly as long as wide, and very slightly converging 

 anteriorly, and not so much rounded on the front edge as in Petrophora. 

 Mandibles, tongue, etc., same as Petrophora. 



Melanippe. — Front long and very narrow; occipital region widening 

 considerably. Eyes a little lamer than in Petrophora ; occiput one-third as 

 long as broad, and nol hollowed out by the epicranium, which is small, 

 flattened lozenge-shaped. A little narrower between the antennse than usual. 

 Clypeus remarkably long, taking up whole front ; on upper side of clypeus, 

 orbital region slightly developed. Front edge like clypeus of Petrophora, 

 being well rounded ; and mandibles and tongue as in Petrophora. 



Phibalapteryx intestinata. — Front shorter, clypeal region more triangular, 

 and occipital widening more than in Petrophora. Occiput a little smaller than 

 in Petrophora, being shorter; but the epicranium is of the same form, only 

 larger. Clypeus of about the same form, but the sides converge more 

 anteriorly. Front edge much less rounded. Mandibles and tongue the same. 



Caripeta divisata, $ (pi. 6, fig. 20). — Occiput moderately long; excavated 

 in front to receive the epicranium, which is subtriangular, and nearly as long 

 as broad. Clypeus moderately full, oblong, much longer than broad; sides 

 converging very slightly anteriorly. Two ocelli present. 



Fidonia truncataria. — The front is very broad, the eyes being smaller than 

 in the higher genera. Occipital region just as long as clypeus. Occiput very 

 short, forming a slightly marked ridge of even width throughout. Epicra- 

 nium large, moderately convex, hind edge moderately curved, broad between 

 the antennas. Clypeus very broad, square; very slightly shorter than broad ; 

 free from orbits ; quite a wide region between the clypeus and eyes. Tongue 

 as large as usual ; mandibles and labrum minute, the former very slender. In 

 this and the next species the tegument is mahogany brown. 



Fidonia notataria. — Differs from F. truncataria in having Ihe occiput 

 blended with the epicranium, and a little longer; the epicranium is a little 

 smaller; clypeus the same, but Orbital region much narrower. Eyes a little 

 fuller,, and appearing proportionally larger. So that there are sometimes 

 specific differences in the proportions of the head. Compared with the generic 

 characters, they are slight, varying most on the occipital and orbital regions. 



Perconia time/aria g and 9. — The struct are of the head isvery remark- 



