Pomona College Journal of Entomology 395 



of the new importations will he sent out and fair trial given the Philippine 

 insects. They were found twenty miles east of Manila." 



Scymnus guttulatus Lee. 



In December of the year 1909, I wrote the State Insectary at Sacramento 

 for some predaceous or parasitic insect enemies of the mealy hug. In reply 

 to this rc(|uest the Acting Superintendent, Mr. F. Maskew, forwarded to 

 me at once colonies of Scyiiinus sinttulafus Lee. which had done good work- 

 on the mealy bug in the central and northern part of the State. The shipments 

 received from the State Insectary arc as follows: 



Date of shipment. No. of fiidkiduals. Liberated. 

 December 30, 1909 

 December 31, 1909 



January 3, 1910 

 January 5, 1910 



These sendings amounted to 975 individuals, enough to give some idea 

 as to their efficiency in a comparatively short time. 



As stated above 575 were liberated in special tent houses built over large 

 trees infested with mealy bugs right in the orchard. Into these tents was 

 kept a bountiful supply of mealy bugs throughout the entire year from 

 Dec. 1909 until January 1911. The remainder were liberated in office breed- 

 ing cages and in the open. Those liberated outside were lost completely. I 

 have never been able to secure a single specimen of this species in the open. 



Those liberated in the tent houses had every opportunity that could be 

 given them. They were protected from the winter and supplied with so many 

 mealy Inigs that the trees were greatly injured by their numbers. In spite 

 of the conditions, little or no progress was made. At the end of a year we 

 had taken out less than the number first liberated in the tent houses. They 

 made no progress against the numbers of the mealy bugs at all. In the office 

 they multiplied a little better and quite a number were liberated in the 

 orchards. It might be that they must become acclimated before they are 

 able to do good work, so we are still watching their progress. Several colonies 

 have been sent to other localities, viz. Placentia, Hueneme, and Ventura 

 and it may do better there. It is not out of the limits of this work to include 

 a description of this species. 



Eggs. — Very small and deposited singly among the egg masses of the 

 mealy bugs or on the surfaces of the leaves among the young scale insects. 



Larvae. (Fig. 137 A and Fig. 136 C). The full grown larvas cannot easily be 

 told from that form of Cryptogomus orbiculus. They are covered with the 

 same appearing, long white cottony filaments. The ventral side is bare and 

 shows the yellow color of the body proper. The length of this species averages 

 6 mm., the width. 2.5 mm., with the covering and about half these measure- 

 ments without the covering. 



