149 



COCCID^, OR SCALE INSECTS.— XI. 



By T. D. A. Cockerell, Entomologist of the New Mexico Agricultural 



Experiment Station. 



Genus Pinnaspis. 



(68.) Pinnaspis pandani, Comstock. (The Pandanus Scale.) 



Diagnosis. — A very small light brown or reddish-brown mussel- 

 shaped scale, found in great quantities on the leaves of plants it 

 infests. Under a miscroscope it is seen that the median lobes 

 of the insect are closed together as in Chionaspis minor. 



Distrtbution. — Common in Jamaica, and especially in Trinidad. 

 Also found in Grem da, by Mr. Broadway, and in Barbados 

 and British Guiana. It is a hothouse species in the United 

 •States and Italy ; but it seems not to occur in those parts of 

 Asia and Australasia which have been examined for Coccidae. 



Food-plants — Originally found on Pandanus by Prof. Trelease, in 

 the Harvard Botanic Garden. Del Guercio reports it from 

 Pandanus utilis. It occurs on Pandanus in the Trinidad 

 Botanic Gardens, in company with Ischnaspis filiformis. In 

 Jamaica, I found it on coconut palm in the grounds of the 

 Jamaica Institute; and Mr. E. J. F. Campbell found it on 

 Dracaena in Castleton Gardens. From Barbados, Mr. A. C. F. 

 Morgan reports it on coconut palm ; and he received it on 

 Areca lutetcens from the Royal Botanic Society's Gardens, and 

 on Dictijospermmn album from Trinidad. The Grenada 

 specimens are on Anthurium cryttallinum. Additional fcod 

 plants in Trinidad are Areca catechu, Pinanga kuhlll, Heliconia 

 Bihai, and "Balizier." 



Bestructiveness. — It has not attracted much attention in Jamaica, 

 but in Trinidad Mr Hart says it " is a great pest on palms which 

 are natives of a cooler climate than ours." 



Varieties. — Some specimens found in Jamaica are large and more 

 strongly coloured than usual. A distinct variety (vor. albus. 

 Ckll.) occurs in Trinidad, having a white scale. 



Enemifs. — It is attacked by a parasitic fungus in Trinidad. 



Note. — Mr. Morgan has expressed the opinion that this is a synonym 

 of P. buxi (Bouchi), which occurs on Buxus sempervirens in 

 Europe It is quite probable, however, that the two species 

 are distinct, though closely allied. 



(69.) Pinnaspis bambusce, Ckll. (The Bamboo Mussel-Scale.) 

 Diagnosis. — Small pale horn-coloured mussel-shaped scales, inclined 



to be tricarinate, on stems of bamboo. 

 Distril ution. — Only known from Jamaica; it was discovered on 



pieces of bamboo- stem used for flower-pots at Hope Gardens. 

 Pood-plants. — Bamboo only. 



Destruc iven> ss. — Not complained of, but from its abundance on the 



stems it must be harmful. 

 Enemies. — It has a ehalcidid parasite. 



Genus Fiorinia. 



(70.) Fiorinia fiorinia, Targioni — Tozzetti. (The Bulged S'ale.) 

 Diagnosis. — An elongate yelh wish-brown scale, very small, distinctly 



