APHIDIDiE^ COCCIDiE. 
Ins. 301 
New genera and species : — 
Ptychodes, Buckton, Mon. Brifc. Aph. iii. p. 39. Lachnince ; placed after 
Phyllaphis ; type, Aphis jug landis, Frisch. 
Stomaphis (Walk., MS.), id. 1. c. p. 61. Allied to Lachnus; type, Aphis 
quercus, L. (? = longirostris, Fabr.). 
Pemphigus glandiformis and tortuosus, p. 53, note, and ovato-ohlongus, 
pp. 61-66, pi. iv. Kessler, Ber. Ver. Cass, xxviii., on Populus nigra and 
dilatata in Germany. 
Siphonophora lilii, Monell, Rep. Dep. Agric. 1879, p. 221, New York, 
probably introduced from Japan. 
Phyllaphis niger, Ashmead, Oanad. Ent. xiii. p. 155, Florida. 
Myzus roseus^ Maccbiati, ihid., Sardinia, on Yucca. 
Callipterus castanece (Fitch ?), Buckton, Mon. Brit. Aph. iii. p. 26, 
pi. xci. figs. 5-9, Haslemere. 
Lachnus macrocephalus (? = hyalinus, Koch), id. 1. c. p. 48, pi. xcvii., 
England ; L. australis and quercicolens, Ashmead, 1. c. pp. 68 & 155, 
Florida. 
Dryohius costatus (Walk., MS.), Buckton, 1. c. p. 78, Southgate. 
Schizoneura fodiens and fuligmosa, id. 1. c. pp. 94 & 96, pi. cvi. 
figs. 6-12, and pi. cvii., Haslemere ; S. cerealium, Szaniszlo, Term, 
fiizetek, iv. pp. 192-196 & 233, Hungary (= S. venusta. Pass., Horvdth, 
op. cit. pp. 275, 276 & 331). 
COCCID^. 
CoLV^iE, P. Essayo sobre una nueva enfermedad^del Olivo {Aspidiotus 
olecc). Madrid : 1880, 8vo, pp. 43, and 2 pis. 
Comstock, J. H. Report on Scale Insects. Rep. Dep. Agric. 1880 
(part ii.), pp. 276-349. 
After an Introduction dealing with the characters of the Coccidce, their 
subfamilies, metamorphoses, and characters, the means of destroying them^ 
and the useful products obtained from them, the author proceeds to 
describe a great number of both known and new species. Their parasites 
are dealt with in a separate section of the Report (part iii. pp. 350-371). 
The following are the known species discussed : — Aspidiotus ancylus, Putn., 
pis. xiv. fig. 3, xxi. fig. 4, p. 292, aurantii, Mask. (= citri, Comst.), pis. iii. 
figs. 1 & 1 a-1 c, xii. fig. 1, xiv. fig. 1, p. 293, nerii, Bouche (= touched, 
Targ.-Tozz.), pis. iv. fig. 1, xv. fig. 1, p. 301 ; Diaspis carueli, Targ,- 
Tozz., pis. V. fig. 2, XV. fig. 3, XX. fig. 6, p. 310, ostreiformis, Curt. (=. 
circularis, Fitch), pi. xv. fig. 4, p. 311, I'osce, Sandb., pis. v. figs. 1, & 1 a, b, 
xvii. fig. 1, xxi. fig. 3 ; Chionaspis furfurus, Fitch (= cerasi, Fitch, = 
harrisi, Walsh), pis. vi. fig. 1, xvi. fig. 3, xvii. fig. 3, p. 315, pinifolicc, 
Fitch, pis. vi. fig. 2, xvi. fig. 4, xviii. fig. 1, p.. 318, salicis, Linn. (== frax- 
ini, Sign.), pi. xvi. fig. 5, p. 320; Mytilaspis citricola, Pack., pis. vii. fig. 1, 
XX. fig. 2, xviii. fig. 3, p. 321, gloveri, Pack., pis. vii. fig. 2, xviii. fig. 4, xxi. 
fig. 1, p. 323, pomorum, Bouch4 (= conchiformis, auct., nec Gmel., pyrus- 
malus, Rob., pomicorticis, Riley), pi. xix. fig. 2, p. 325; Asterodiaspis 
quercicola, Sign., p. 330; Pulvinaria innumerabilis, Ruthv., pi. xi. fig. 6 ; 
