18 



occipui a litll(> miiri' Hiau a iliinl as long as wide; cpirrairmni soniowlKit 

 sliorl lozcusrc-sliaped ; same distance between aiileniuv as in rctropJ/oia. 

 Clvpens, liowcvcT, sliorter, hanlly as long as wide, and very slightly converging 

 anteriorlv, and not so much ronnded on the front edge as in Pdropliora. 

 Mandibles, (ongne, etc.. same as Pcfrophora. 



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

 considerably. Eyes a little larger than \\\ rdyophoya ; occiput one-third as 

 Ion"- as l)roa(l, and not hollowed out l)y Ihc epicrauiuni, which is small, 

 tlattencd lozenge-shaped. A little narrower between the antennae than usual. 

 CIviMMis remarkably long, taking up whole front: on ii])j>cr side of clypeus, 

 or!)ital region slighlly developed. Front edge like clyp.eus of Fclroplmra, 

 being well rouiuled ; and mandibles and tongue as in Petiophora. 



riiihalaptenjx Infest inatii. — Front sliorter, clypeal region more (riangulav, 

 and occi[)ital widening more than in Petrophom. ()ccij)ut a little smaller than 

 in /V/ro/j/zo/vf, being shorter ; but the e])icranium is of the same form, only 

 larger. Clypeus of about the same form, l)ut the sides converge more 

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



Caripcta dicisa/a, $ (pi. G, fig. 20). — Occiput moderately long; excavated 

 ill front to receive the epicrauiuni, 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. 



Fidouia tni//c(ifiiri(i. — The front is very broad, the eyes being smaller than 

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

 short, I'orming a slightly marked ridge of even width throughout. Eiiicra- 

 niuiii lai-ge, moderately convex, hind edge moderately curved, broad between 

 the antemue. Clypeus vc-ry broad, sipiare; very slightly shorter than broad ; 

 free from orbits ; ([iiitc a wide region betwf-en 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 l)rown. 



Fidouia iii>t((taria. — Differs from F. Inmcntaria in having the occiput 

 lilended with the epicrauiuni, and a little longer; the epicranium is a little 

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

 fidler, and ap[)earing proportionally larger. So that there are sometimes 

 specific dilbu'ences in the proportions of the head. Compared with the generic 

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



Pcrconid finiefiirio, $ and 9. — The striu'lure of the head is verv remark- 



