101 



which, Mr. E. E. Green informs me that he has found it in Ceylon. 

 In Europe, it is sometimes found in hothouses. In the neotropical 

 region, it has been found in Demerara, Jamaica, Barbados (on coconut, 

 specimens received through Dr Plaxton in 1892.) St Kitts (Barber), 

 Montserrat (Barber), Antigua (Barber), Trinidad (Urich), and Grenada 

 (Smith). 



Food-plants. — Very various. In Kingston, Jamaica, it is very com- 

 mon on the leaves of mango, and likewise on various orchids. On Aug. 

 2, 1892, Dr. Henderson gave me a leaf of Broughtonia sanguinea which 

 had come from the hills in Jamaica, and on it were 20 scales of V. stel- 

 lifera, all along the midrib on the under side. Prof. Townsend sent me 

 specimens found in Kingston, Jamaica, on Jambolana (J. J. Bowrey) 

 and Sapodilla (Dr. Plaxton). In St. Kitts it was found on Araizia 

 polycephala ; in Trinidad on a fern ; in Grenada Mr. G. W. Smith col- 

 lected it on nutmeg. In Barbados it was on coconut. 



Destructiveness. — Not as a rule considered troublesome, but I have 

 sometimes seen it in such numbers as to be decidedly injurious. 



Genus Conchaspisj the Limpet Scales. 

 Very small white scales, looking like little limpets, radiately ridged 

 or ribbed. Two or three forms have been found, but it seems almost 

 impossible to distinguish them as separate species. 



(37.) Conchaspis angrceci, Ckll. (The Orchid Limpet-scale). 

 Diagnosis. — See above under the genus. 



Distribution. — Found in Hope Gardens, Jamaica, June, 1892. At 

 Eaton Hall, Chester, England, was found a scale on plants from Trini- 

 dad, which Mr. Newstead described as Psendinglisia rodriguesice ; this 

 is certainly a Conchaspis, and Mr. Newstead thinks, after comparing it 

 with specimens of C. angrceci which I sent him, that it is the same 

 species. I am now inclined to think so too, though I at first believed 

 that Mr. Newstead's insect was a second species of the genus. Finally, 

 Prof. Townsend has found a Conchaspis on Hibiscus at Tampico, Mexico, 

 which I also now refer to C. angrceci, though it represents at least a 

 distinct variety. 



Food-plants. — The typical form, as the name indicates, is found on 

 orchids of the genus Angr cecum. 



Destructiveness — Not destructive, unless perhaps injuring very choice 

 orchids, in which case it could easily be cleaned off the plants. 



Genus Pulvinaria ; the Cottony Scales. 



These resemble the soft flat or moderately convex species of Lecauiung 

 but are at once distinguished by the fact that they produce a cottony 

 ovisac which often projects for a considerable distance behind the animal. 

 (38) Pulvinaria cupanice, Ckll. (The Akee Cottony-Scale). 



Diagnosis. — Green oval scales, producing a loose white cottony ovisac ; 

 length with ovisac somewhat less than a quarter of an inch. 



Distribution. — Extremely abundant in Kingston, Jamaica (for ex- 

 ample along East St.), but not yet known out of Jamaica. 



Food-planis. — It is most frequently found on the leaves of the akee, 

 but also on guava and other plants. In Jan., 1893, Mr. 0. Marescaux 

 sent me some from Cherry Garden, on leaves of Cape Jessamine. 



Destructiveness. — From its abundance it is a decidedly important pest- 



