48 BULLETIN 417, U. S. DEPARTMENT OF AGRICULTURE. 



enter at a much earlier date. The notes also show that emergence 

 took place m eastern Massachusetts from May 20 to June 7, and 

 that the average depth at which the beetles hibernated was 2 inches. 



EXPORTATIONS. 



June 17, 1912, 10 males and 10 females were packed with damp 

 sphagnum moss singly m pOl boxes, which were inclosed in a larger 

 box and forwarded by mail to Mr. E. M. Ehrhorn, supermtendent of 

 entomology, in the Hawaiian Islands. The adults were fresh speci- 

 mens, collected in the field just previous to the date of shipment. 

 Mr. Ehrhorn wrote that only two males and three females arrived 

 alive, but that those were very active. It was rather difficult to 

 explam the reason for the death of so many individuals, as the moss 

 in the boxes was stiU damp on receipt. 



Cutworms had been reported as numerous and destructive m the 

 islands by Mi\ Ehrhorn, and it was thought desirable to attempt to 

 introduce this species and C. calidum to prey upon these noxious 

 pests. 



THE EGG. 



Foui'teen fresh eggs gave the following average measuremeiits: Length, 4 mm.; 

 width, 1.7 mm. They are yellowish-white, somewhat elliptical in form, and taper 

 sUghtly toward one end. 



The eggs are deposited singly in the earth and hatch in from 4 

 to 10 days, depending mainly upon the temperature. Two hundred 

 and sixteen eggs deposited in 1912 by several females between June 

 8 and 19 hatched, on an average, in about six days. 



DESCRIPTION OF LARVA. 



The following description of the larval stages was made in 1896 by 

 the senior author: ^ 



First larval stage. — ^At the time of hatching the young larva is of the same color as 

 the egg, but gradually grows darker, until in about 10 hours it is of a deep shiniug 

 brown. After remaining in the canity occupied by the egg for about twenty-four 

 hours, the larva comes to the surface of the ground in search of food. At this time 

 the length is 8 mm., including the caudal appendages, which measiire 1 mm.; the, 

 width at the middle of the first thoracic segment is 1.7 mm., from which point the 

 body tapers gi'adually to the last segment. The head is large in proportion to the 

 body, longer than wide, somewhat flattened, and truncate behind. The clypeus 

 is separated from the epicranium by a well-defined sutiu"e, which extends to the base 

 of the antennae, dividing the raised portions from which they arise. The front edge 

 of the clypeus is emarginate, and bears a prominent hair at each anterior angle. Theiie 

 are also three pairs of hahs situated on the forward part of the clypeus and two pairs 

 directly between the eyes, one pair being on the clypeus and one on the epicranium. 

 Antennae setaceous, four jointed and ferruginous. Eyes conspicuous, and situated 

 in groups of six each, on slight elevations Just behind the antennae. The mandibles 

 are dark brown in color, long, simple, stout at base, but quite pointed at the tip, the 

 left mandible often folded over the right. The maxillse and labium are small, ferru- 

 ginous and provided with well-developed palpi. Prothorax large, as long as the 

 meso- and meta-thorax, slightly contracted and rounded posteriorly. Mesothorax 

 slightly rounded posteriorly; metathorax truncate. Lateral edges of the body 

 segments slightly produced. Dorsal line prominent on all the segments except the 

 last. On the dorsum of each thoracic segment there are ten short hairs, one on the 

 anterior part of each lateral margin, one at each angle of the segment and one on each 

 side of the dorsal line at the anterior and posterior margins. Abdominal segments, 

 nine in number, with the exception of the last, truncate behind, the last segment 



1 Burgess, A. F. Notes on certain Coleoptera known to attack the gipsy moth, /n 44th Ann. Rpt. 

 Mass. State Bd. Agr. f. 1896, p. 412^31, pi. 3-5. 



