148 THE CANADIAN ENTOMOLOGIST. 



Aleyrodes florideiisis Quai n tance. 



This white-fly has been reported by Quaintance (1. c.) from Florida 

 on guava (Psidiwn) and aUigator pear ( Per sea perseœ), and in 

 Barbadoes on both these and smilax ( Theabroma cacao) by Gowdy (1. c.) 

 It was found by the writer in Cuba only on guava in the Botanical Gar- 

 dens at Havana. While generally present in Florida wherever the alligator 

 pear is grown, no evidence of injury has ever been known to follow even 

 the heaviest infestations, and it will probably never be a pest in Cuba. 

 A/eyrodes mori Quaintance. 



This aleyrodid with a black pupa case and white wax marginal fringe 

 has been reported only from Florida, where it infests several plants, more 

 especially the mulberry (Morus). Discovered by the writer on guava in 

 the Botanical Gardens, Havana, but very scarce. 

 Paraleyrodes perseœ Quaintance. 



This species, which has previously been reported as infesting Persea 

 carolhiejtsis, guava and citrus in Florida, was found on guava at Havana 

 and Santiago de las Vegas in all stages ; and while it was not abundant, it 

 was by no means rare. 

 Aleurodicîis cardini^ n. sp. 



Egg. — About 0.26 mm. long, width about 0.076 mm. Elongate oval, 

 uniformly pale yellowish, unmarked. Pedicle short ; egg lying prone on 

 leaf, often entirely surrounded and concealed by fluffy waxen secretions of 

 the adult. Eggs laid without regard to arrangement on leaf. 



Larva. — Crawling first instar. (Fig. i.) Length about 0.319 mm., 

 width about 0.12 mm. Elongate oval, pale yellowish white in colour 

 without darker markings or waxen secretions. Thirteen pairs of marginal 

 spines, short, the posterior two pairs longer ; a fourteenth pair located on 

 venter near margin on cephalic end of case. Spine on lower side of 

 distal third of antennae and terminal spine of antennae proportionately 

 longer and more distinct than in A. citri or A. nubifera. 



Pupa Case. — (Fig. 2.) Length about 0.94 mm., width about 0.64 mm. 

 Subelliptical, elevated on a vertical marginal waxen fringe. Colour yel- 

 lowish to yellowish white, after emergence empty case whitish, semi-trans- 

 parent ; parasitized specimens appear blackish either throughout or in 

 spots. Margin entire without pattern of any sort ; near margin is a series 

 of wax pores. On venter near margin are eighteen or twenty incon- 

 spicuous bristles seen only with high magnification ; of these, three pair, 

 one cephalic, and two caudad, are more conspicuous. On dorsum nearer 

 the margin than centre are five pairs of round well defined compound 



