732 Tin: roon plants of scale insects— cockerell. vol.xix. 



Aspidiotus articidatits, Morgan, and Mytilasim citricola, Packard. Tlie 

 Indian Feronla elephantum, Corrca, is a food plant of Tachardia lacca, 

 Ivorr. 



The Ooccida^, of Citrus trees are about to be treated in full by Mr. 

 Hubbard, but a list of the species may be here given: 



( 1 ) Chiuiiaxpis citri, f 'onistock. On lime ( Amer. 'Sat., 1895, p. 728) ; on inauiliirin oranj^e 



(Maskell, Tr. N. Z. Inst., XXV, p. 211.) Well known as a pest of Citrus tifca in 

 this country and some of the West Indian islands. 



(2) Chionaspis ?a<»s, Cockerell. On orange leaves, Tokyo, . J ai)an (Takahaslii). Allied 



to C. asiridiHtra' and C. hraziUens'iK. 



(3) ITowardia hiclaris, Comstock. On orange stem from Tahiti, found by Mr. Craw in 



his quarantine work; sent by Mr. Ehrhorn. 



(I) J'arlaioria pergandei, Comstock. Well known in the south, and west to Mata- 



moras, Mexico (Townsend). 

 (.">) I'arlaforia zi:ypltii.s, Lucas. Found on lemons. 

 (()) Mi/tilaspis citricohi, Packard {fulva, Targioni-Tozzetti, flarescens, Targioni-Toz- 



zetti). Perhaps the most widely spread and common of orange coccids. I 



am indebted to Mr. Hubbard for calling my attention to the identity of 



M. flavescenii with M. fulva. 



(7) J/i/^(7rtsj)i.v glorcrii, Packard. Frequent in the .South, extending also to Tampico 



and Matamoras, Mexico (Townsend). Mr. Takahashi has found on orange at 

 Tokyo, Jai)au, a form which seems to me to be only a rathcu' broa<l variety of 

 gloverii. 



(8) Aspidiotus Jicus, Ashniead. Common on (Jitrus trees in the warm parts of America. 

 (!l) Aspidiotus sculifornm, Cockerell. On Citrus in Victoria and Monterey, Mexico 



(Townsend). 



(10) Aspidiotus articulatus, Morgan. On Citrus trees in the West Indies. 



(II) Aspidiotus duplex, Cockerell. Found by Mr. Craw on orange trees from .Tapau. 



(12) Aspidiotus alhopunetatus, Cockerell. Found bj^ Mr. Craw on orange seedlings 



from Japan. Hardly different from A. pcruiciosus. 



(13) Aspidiotus auranlii, Maskell. A well-known orange ])e8t, especially in Califor- 



nia. It has a variety citrinus, Coquillett. 



(11) Aspidiotus uerii var. limouii, Signoi'et. On lemons in the south of Europe. 



.Specimens of ncrii are often found on lemons exposed for sale in this country, 

 but probably of European origin. 



(15) Aspidiotus rapax, Comstock. Recorded from orange by Coquillett, as also 



A. convexus. 



(16) Aspidiotus longispiuus, Morgan. Maskell I'cports this on Cliina orange from the 



.Sandwich Islands. (Tr. N. Z. Inst., XXVII, p. 38.) 



(17) Aspidiotus Cjidoniw, Comstock. According to Maskell, this is found on orange in 



Samoa. 



(18) J'uhnnaria tecta, Maskell. On Citrus, etc., in Australia. 



(1!)) Pulviuaria auranlii, Cockerell. On orange, Tokyo, .lapan (Takahashi). 



(20) Licauium punciatuin, Cockerell. On Citrus medica var. acida in (Grenada. 



(21) Lccanium oh(v, Bernard. The well-known black scale. L. citri, Inzenga, 



ap|)ears to lie the same. 



(22) Lccanium hes})cridum, Linnseus. Also a common 8i)ecies on Citrus tn-es, though 



not everywhere. 



(23) Lvcauiuni longulum, Douglas. Maskell reports this from Citrus. 



(24) Lccanium hcmisphirrlcum, Targioni-Tozzetti. Alfects Citrus trees as well as 



numy other plants. Cociuillett records the variety hihcruitculorum, I5oisdu\ al. 



(25) CeropJastcs cirri pediformis, Comstock. 



(2(!) Ceroplastcs JloridensiH, Comstock. This and the last are reported by Comstock. 

 (27) Orthezia insignia, Douglas. On orange, see Amer. Nat., 1895, p. 727. Also on 

 lime. 



