Feb., '04] ENTOMOLOGICAL NEWS. 5! 



able that the breeding began much earlier in the season and 

 continued at least a little later. No adults were taken on the 

 wing and no observations were made of any attempts at bit- 

 ing. Practically the species is of no importance : technically 

 it is of the greatest interest. 



The larva, figure i of plate vii, is whitish, almost transparent, 

 and 5-6^2 mm. in length. The head is almost twice as broad 

 as long. Antennae half as long as the head, almost uniform 

 in thickness two-thirds from base, then tapering slightly to the 

 tip where there are four articulated spines and a stout little 

 joint. The hair tuft, figure 5, issues from a point slightly 

 above the middle, and is sparse, not extending beyond the tip. 

 At figure 2, is a drawing of the head beneath, made from a 

 cast skin. The rotary fan tufts, figure 3, have the hairs pec- 

 tinated at the tip ; most obviously so toward the centre of the 

 structures. The mandible, figure 4, and the mentum, figure 

 6, offer nothing of special importance. 



The thorax is one and one-half times the width of the head, 

 with the sides a little angulated : tufts as shown in the figure. 



The anal siphon is 45^ times as long as its width at base and 

 tapers rather evenly toward the tip. It is really a very incon- 

 spicuous affair in the larva and readily overlooked in the living 

 specimen. At figure i, its relation to the entire larva is 

 brought out, and at figure 7, its relation to the immediate sur- 

 soundings is shown. This drawing was made from a mounted 

 cast skin, and the tube seems in consequence stouter than is 

 really the case. There are 12 spines in each of the lateral 

 rows, and their average form is shown at 9. 



The lateral combs of the 8th abdominal segment consist of 

 from 8 to 10 scales each, arranged as shown at 7, and indi- 

 vidually like figure 8 on plate. 



The anal gills are more than double the length of the anal 

 siphon, slender, drawn to a point, with the tracheal tubes 

 readily visible through the transparent walls under low powers 

 of the microscope. 



Altogether this is a very distinct little species in all the 

 known stages. Of the egg, or of its method of hibernation, 

 I have no information. 



