( 568 ) 



a few liairs are scattered over it. I conld make ont nothing like eyes, and therefore 

 suppose that these organs do not exist. 



"The buccal apparatus appears well developed, and very similar to that of 

 Nycteribia. At the back of the dorsal part of the head is a large semilunar plate, 

 wider than it ; its anterior margin is fringed with large trnticated sjiiues, while the 

 j)0steri(ir margin has a row of lanceolate spines ; in the feinah' tliis plate is rather 

 smaller, and has anteriorly a double row of large spines, and posteriorly an incom- 

 plete row of larsre hairs. 



"The ihorax is large, covered with liairs ; tlie ])rothorax is sub-oval, fringed 

 ])Osteriorly by a line of large lanceolate spines ; Ihc prothorax of the female is more 

 distinct, and has not the posterior line of spines. The metathorax in the male is 

 mnch smaller than the prothorax, and ends in a point ; in the female it consists of 

 two oval pieces. 



'' The abdomen is divided into nine segments in both my specimens, one 

 of which 1 take to be a male ; it has a broader abdomen, with a pointed, bent, 

 copulatory organ on the last segment. In both sexes the abdomen is covered 

 with hairs. 



" The anterior legs are short and strong, terminating in two small claws and 

 several spines ; ihnT femora are very broad. The intermediate and posterior pairs 

 of legs are mnch longer and more slender. Their tarsi terminate iu two nnciuated 

 and sharp claws, with two tubercles at their base in the male, and lower down on 

 the tarsi of the female are two more claws. I observed no rndiments of wings. 



"All the insects described in this paper were collected at Amoy." 



We have qnoted the description verbally in order to show that it is mainly 

 based on the adult specimen which bears two combs on the dorsal side. This 

 example, therefore, is the name-type, which it is necessary to state, as there is 

 a remote possibility that the immature individual represents after all a different 

 species, the evidence from which we conclude that the two specimens are one species 

 not being direct, bnt circumstantial. 



The proboscis (Pi. XII. fig. 2. 4) consists of four segments, of which tlie first 

 is very short, the second slender and entirely open on the anterior side, the third 

 short and also open, and the last the longest of all. The clipeus has no jirominent 

 fan-like incrassation beneath. The two halves of the gular comb are centrally close 

 together, which accounts for the strong reduction in width of the second segment of 

 tlie proboscis. The posterior spines of this comb are long and project mnch beyond 

 the lateral margin of the head. The posterior edge of the head, on the dorsal side, 

 is less closely applied to the thorax than in the other Polyctenids, especially at the 

 sides, the angles being so slightly produced backwards that there remains a gap 

 between the head and pronotnm. 



The antennae are characteristic, being essentially longer than iu all the other 

 Old- World forms, bnt shorter than in the American species {Ilesperoctenes), the 

 apex of the third segment reaching a little beyond the hind angle of the head. The 

 second segment is a very little less than one-third shorter than tlie clipens is wide 

 from side to side, and bears only bristles and hairs, no short thick spines. 



The elytra are fused from the base to about one-third and then separated. 

 The apical margin being (|nite evenly rounded, there is a large triangular gap 

 between them. 



Tlie prosternnm extends in between the forecoxae, ending in an obtuse process 

 whose tip is sinuate. In the mid and hind legs the tibiae have at least four 



