CHKY30PHANUS DISPAR. 453 



type. These occur, however, only in the circumspiracular region, 

 including the prothorax. Each hair is a little swollen in its last 

 third, and, from the surface of this portion, arises a number of fine 

 spiculae, generally standing out at right-angles to the axis of the hair, 

 producing a very different appearance from the spiculated hair so often 

 met with. Amongst these hairs in the photograph (pi. xii., fig. 1) is one, 

 r/c.,that pointing, and with its end close, to the side of the spiracle, which, 

 instead of terminating in a sharp point, has an oblique flat end, armed 

 with spiculae, clearly a hair that was not quite sure it ought not to have 

 been a trumpet-hair. Several trumpet-hairs may also be seen in the 

 photograph. The great mass of the circles unprovided with hairs are 

 no doubt lenticles — some may be hair-bases where the hairs have been 

 lost. Unfortunately, in the preparation, a majority of them have 

 succeeded in retaining an air babble, which makes them look black in 

 the photograph. Nearly all those, however, that are not so obscured, 

 possess a membrane or diaphragm of minutely dotted structure, like 

 that usually met with in lenticles. The spiracle is of elaborate 

 structure. It may be described as an oval tube nearly as long as it is 

 wide, with the opening it presents diminished to a central slit by 

 membranous outgrowths on the sides, nearly meeting in the middle. 

 Each of these seems to be a pillar of transparent material expanded at its 

 top into a flat plate. This differs much, if not in essential structure, 

 certainly in appearance, from that of E. yldaeas (in which each spiracle 

 has an outer projecting mass, of a chevaux de frise character) , looking as 

 though the pillars (in C. dispar) did not end w T ithin the spiracle, but, 

 bending, emerged from the middle of the spiracle, and then, bending 

 outwards in rounded batons closely set together, of a length rather 

 greater than half the width of the spiracle, formed a sort of outer 

 basket-shaped structure, but of such transparent material that it is 

 difficult to decide whether it does consist of a number of separate 

 batons, or whether the lines are only grooves on a continuous structure. 

 The pupae of C. dispar and of B. yldaeas present certain spiculated 

 areas that very strongly suggest the spiculae seen on Nepticulid pupae 

 and those of other lower micro-lepidoptera, which are the forerunners 

 and primary forms of the rows of spines so well-developed on the 

 pupae of Tortricids and various other of the higher micro-lepidoptera. 

 They agree with these micro-spiculae in their distribution and in their 

 attitude, i.e., directed backwards (not dorsally but terminally). They 

 are very small, but are more or less similarly arranged in rows. On 

 the forward abdominal segments they are dorsal only. On the 7th and 

 8th they are also lateral, and on the 9th and 10th they occur ventrally 

 and over w 7 ider areas. In both species, they occur as an anterior band 

 along the anterior borders of the segments, and a posterior close to the 

 hindinargin. The anterior row occurs in U. phlaeas on all segments 

 2-9, the posterior on 1, 3, 4, 5, 7, and 8. The posterior row on the 2nd 

 abdominal segment is quite forward of the posterior margin, without 

 being quite in the middle of the segment. This is also the case in 

 C. dispar, in which the anterior row T exists on 2, 6, 7, 8, and 9, and 

 the posterior on 3, 4, 5, G, 7, and 8. Plate xii., fig. 2, represents a 

 portion of the cremaster of 0. dispar. The cremaster consists of a very 

 large number of hairs about Olimm. long, w T ith a double anchor-like 

 hook, or pair of hooks, at the free end. Just above these, on the 

 right, is seen an area of skin-points, which are very similar to, and 



