5 



ed for the extirpation of the scourge have been decidedly successful. Of 

 the many thousands of trees which were attacked, only a very small 

 percentage have been killed, and many of those which have had some 

 of their leaves destroyed, are in a fair way towards recovery. The pest 

 which at one time threatened the destruction of all the Pine trees in 

 the Colony has, for the present at any rate, been most successfully 

 coped with. 



COCCmX OR SCALE INSECTS. — VI. 



By T. D. A. Cockerell, Professor of Entomology at the New Mexico 



Agricultural College. 

 Genus Ceroplastes ; the Wax Scales. 

 These scales are allied to the convex species of L<canium, but are dis- 

 tinguished very easily by their coating of wax. 



(26.) Ceroplastes floridensis, Comst. (The Florida Wax Scale). 



Diagnosis. — A small, moderately convex scale, covered with white or 

 whitish wax, which is not divided into distinct plates. 



Distribution. — Probably a native of the "West Indies, though first 

 described (in 1881) from Florida. It is plentiful in Kingston, Jamaica. 

 Also found in Louisiana. 



Food -pi 'ants. — Ficus, guava, oleander, red bay, sweet bay, Ilex glaber 

 myrtle, Andromeda, Citrus, pomegranate, quince, &c. Anyone wishing 

 to find this species in Jamaica may look on the leaves of the large 

 Ficus in the yard of the Jamaica Institute. 



Destructiveness. — Not at all a serious pest, as observed in the West 

 Indie s. This harmlessness arises from the fact that it usually occurs 

 singly on the leaves, never in very great numbers and never gregari- 

 ously. 



Enemies — It suffers from an undetermined parasite in Jamaica. 



Pink Variety.— Mr. H. A. Morgan of Louisiana has figured a variety 

 tinged with pink (Bull. La. Exp. Sta., 1893); and on oleander at Cava- 

 liers, Kingston, I found a pink specimen. This latter appears to agree 

 quite sufficiently with the Ceroplastes Myricas from the Cape of Good 

 Hope, a species which was described by Linne, but is not known to 

 modem Entomologists. The original C. myricce was on myrica querci- 

 folia and until it is rediscovered on that plant at the Cape we cannot be 

 positive as to its identity. Of course, if the pink form of the Florida 

 wax-scale is the true myricce, as surmised, the Linnean name will have to 

 be used for the species. 



(27.) Ceroplastes cirripediformis, Comst. (I he Barnacle Wax-Scale. ) 



Diagnosis. — Larger than the last, and higher — that is, more convex. 

 The wax is distinctly divided into plates. 



Distribution. — Like the last, originally described from Florida in 

 1881. In the West Indies it is fairly common in Kingston, Jamaica, 

 and has been found by Mr. Barber in Antigua. 



Food-plants. — Soushumber, quince, orange, Eupato> ium, Eranthe- 

 mum, lignum-vitse. Found on the stems and twigs, whereas the last 

 species occurs on the leaves. 



On Feb. 1, 1893, I found Ceroplastes cirripediformis (one adult and 

 one young), Ceroplaztes florridensis (three or four), and Lecanium ohce- 



