THE CANADIAN ENTOMOLOGIST. 58 



cotnviuniforines; I fancy he meant by this that the moths approached the 

 Noctuidcc in their proportions, that the body was heavy and longer than 

 the wings. I may be wrong in this. The moths are interesting to me, as 

 I have long ago said, from the curious way in which the pattern of the 

 upper surface of hind wings is reproduced on primaries beneath ; this is 

 also the case in the Noctuidcc. I have said it is as if the pattern of one 

 were photographed on the other ; we have an approach to this in the 

 Smerifit/iince, in which the under side of fore wings is often rosy. This 

 •is seen more or less in all moths in which the wings cover each other in a 

 state of rest ; therefore not in the Geovictridce, not in the Butterflies. The 

 Ceratocampince, which Grote and Robinson, in correction of Packard, 

 separate from the Saturnian genera Hemileuca, etc., are an American sub- 

 family of Bombyces, probably the descendants of an old type more inti- 

 mately connected with the Hawk Moths. The eye spots of Smerinthus 

 are re-called, the rosy disc of the secondaries is here repeated. The 

 group is probably South American in its origin. It has a feeble but 

 beautiful representation in North America. 



B. Description of an Unknow?i Larva belonging to the Geometridce 

 A small colony of nearly full grown larvae were observed on Syringa 

 vulgaris, the common lilac, on September i6th, on Staten Island. The 

 total length extended was then 30 mil. The head was small, the thoracic 

 segments narrowing anteriorly. The two jointed antennae were provided 

 with a bristle at the extremity of the second joint. Two pair of abdominal 

 or false feet. From the 4th to the 7th segment the body was enlarged 

 and somewhat flattened, the segments provided with a rounded lateral 

 prominence and with a dorsal transverse ridge showing small yellowish 

 points on each side, from the inner edge of which points sprang a single 

 hair. The latter characters were shared by all the abdominal segments. 

 The 7th to the 9th segments showed a. pale yellowish lateral patch, below 

 which the ventral protuberance was flecked with the same color extending 

 along the abdominal legs on the latter segment. A more elevated dorsal 

 hump on the anal segment, consisting of two protuberances; from the apex 

 of each is emitted a single short bristle. This seems to recall a stage in 

 the development of the caudal horn of the Sphingidce.. The whole body 

 seems naked, but two isolated hairs or bristles are seen to arise sub- 

 dorsally along the segments. The head is sparsely hirsute. The general 

 color of this singular larva is dark wood brown, marbled dorsally with a 



