COLONIES LIBERATED IN MASSACHUSETTS. 79 



Arlington. — On July 13, 1910, 200 beetle larvje were liberated in woodland off 

 Appleton Street. The condition of infestation by the gipay moth in this section 

 was favorable for the survival of the colony. 



Bedford. — On June 9, 1910, 50 male and 50 female Calosoma beetles that emerged 

 from rearing cages at the laboratory were released in the woodland on Page Road, 

 near the Lexington town line. Gipsy moth cateri)illars were common, and a liberal 

 food sui>i)ly for the beetles was assured. 



Bererhj. — On July 17, 1909, 200 Calosoma larva' wore liberated in woodland, which 

 had been partially stripped I)y the gipsy moth caterpillars, off Essex Avenue. Most 

 of the gipsy moth larvix? Avere full grown at the time the planting was made, and 

 some pupa- were present on the trees. This colony was examined July 18, 1910, and 

 several beetle larva? and molted skins were found on the trees. On August 29, this 

 colony was scouted by Mr. Proctor, who reported that molted skins of the beetle 

 larvae were found on trees to a distance of 500 yards from the center of the colony 

 and, as he states that the number of egg-clusters present indicated that there would 

 be plenty of food for the Calosoma larva3 the following year, it is probable that this 

 colony will develop and spread rai)idly. 



BiUerica. — On ^lay 27, 1910, 50 male and .50 female beetles were liberated in badly 

 infested woodland near Ranlett's Park, South lUllerica. These beetles were reared 

 at the laboratory and had just emerged from hibernation cages. The gipsy moth 

 infestation was very serious in this section, although at this time the caterpillars were 

 rather small. July 29 the locality where the beetles were released was scouted by 

 Mr. Schaffner, but no molted skins of the Calosoma larvae were found. Many of the 

 gipsy moth caterpillars died from disease earlier in the summer. 



On June 24 a planting was made in woodland off Sprague Street, North Billerica, 

 Fourteen males and 28 females, most of them being beetles that were reared at the 

 laboratory, were placed in this colony. Plenty of gipsy moth caterpillars were 

 present for food. 



Boston. — No Calosoma beetles have been liberated within the city limits. One 

 of the Brookline colonies has spread over the line into Boston in the Forest Hills 

 district. 



Boxford. — On June 27, 1910, 200 Calosoma larvae were liberated in badly infested 

 woodland about 1 mile north of the railroad station. Gipsy moth caterpillars were 

 present in large numbers, and the locality was favorable for the development and 

 increase of the beetles. 



Braintree. — On July 19, 1909, 200 Calosoma larvae were liberated in infested wo(>d- 

 land on Liberty Street, South Braintree. Gipsy moth caterpillars and pupae were 

 abundant, and conditions were favorable for the increase of the beetles. June 9 

 1910, the colony was examined by Mr. Schaffner, and a single Calosoma beetle was 

 found. October 1, 1910, the colony was again scouted, and 1 first-stage molted skin 

 was found. The burlaps in and around this planting had been turned periodically 

 during the summer, and the gipsy moth larvae and pupae had been crushed, which 

 of course served to reduce the beetles' food supply. While this was being done, it 

 is probable that the molted skins of the beetle, which are ordinarily found under 

 the burlap, may have been brushed to the ground, so that it was impossible to deter- 

 mine to what extent the beetles in the colony had rei)roduced. 



Brookline. — Several colonies were i)lantcd in Brookline in the summer of 1908, 

 and in 1909 another colony was added. 



On Jidy 4, 1908, 100 beetle larvae were liberated in l>a(lly infested woodland off 

 Hammond Street. Another colony, containing 81 male and 64 female beetles, was 

 liberated in infested woodland off Newton Street, and on July 8, 100 beetle larvae were 

 placed in badly infested woodland off South Street. The colony liberated in 1909 

 consisted of 200 beetle larvae, which were placed in badly infested woodland off Ileatli 

 Street. 



