1876.] ^xJiibition of new S2)ecies of Mantidiss. 175 



o£ these localities, in association with a large bright crimson-coloured species 

 of Anoura, two species o£ Spring-tails, two or three PselajjJiidce, five or sis 

 myriopods, amongst which a Polyxcnus differing from the Em-opean 

 P. IfKjuTUS in having oiie instead of two pencils of silvery hairs at the end 

 of the body, and a species of the very remarkable genus Scolopeiidrella 

 especially merit attention. 



Mr. WoOD-MASOisr next exhibited some remarkable species oiMantidce, 

 and said — 



These insects belong to that division of the family in which either 

 the legs or some part of the body is provided with appendages, and to that 

 section of it in which in males as well as in females the antennae are simple 

 and setaceous and not j)ectinated, and I invite attention to some sexual 

 differences presented by them which, I believe, have never before been 

 noticed. 



In Sestias Brmmeriana, the head of the female is prolonged vertically 

 in the form of a cone bilobed at its extremity, while in the opposite 

 sex this great cone is represented by a mere tubercle, as in both sexes 

 of the species belonging to the genus Creobrota ; the fore-femora, which 

 are wanting in the specimen from which the species was described by Saus- 

 sure, are equally conspicuous in both sexes, being very broadly oval, with 

 their upper margins very strongly crested. 



In the next specimen to which I would draw attention, a small 

 (22 mm. long) female insect brought from Pegu by Mr. Kurz and 

 apparently allied to Sestias and Oxi/pilws hicingulata, DeHaan, the 

 upper edges of the fore-femora are sharply crested, but not so greatly 

 expanded ; the cephalic cone is bicuspid at the extremity and armed with 

 two pointed cusps on each side ; the occijiut presents behind each eye a 

 jjointed tubercle directed backwards ; the face is carinate, the keel of the 

 ' facial shield' terminating above in a stout conical tooth ; the two upper 

 ocelli are surmounted by a i^air of long and slender conical spines ; the 

 organs of flight do not nearly reach to the extremity of the abdomen, and 

 the disc of the prothorax is armed with four sharp erect spiniforni 

 tubercles. From the analogy of Hestias, I confidently expect that the male 

 will prove to have its head similarly armed with a tubercle. I have named 

 this curious insect Ceratommills Saussurii. 



I also exhibit the two sexes of an insect captured, the female by Mr. Peal 

 in the Naga hills, and tlie male l:)y Dr. Cameron in the Bhutan Doars ; in the 

 former the head is provided witli a h)iig and slightly tapering foliaceous 

 frontal horn, truncated at the apex, longitudinally obtusely carinate in front 

 and sharply crested behind, and nearly three times as long as the head is 

 high ; in the latter this great foliaccous horn is reduced to little more than 

 a tubercle only about half as long as the head is high. I have named this 



