1892.] . 13 



mentioned by Dr. Signoret, suggestive of ocelli. For description and 

 figures, see Comstock's Eeport {I. c). 



I have found this species on Kentia Balmoriana, in conservatories 

 in Oporto, also on Anthurium acaule, from E-oy. Bot. Grardens, Kew, 

 received from Mr. Douglas, and on cocoa-palm from Barbadoes, from 

 the same kind source. Prof. Comstock describes having found it in 

 conservatories on Kentia Balmoriana^ Camellia, and Cijcas revoluta, and 

 Signoret's specimens were taken from conservatories. It does not, 

 therefore, seem to be indigenous to Europe, but rather, perhaps, to the 

 West Indies. It does not appear to have been found in Nevs^ Zealand, 

 although Mr. Maskell describes some allied species. 



Genus LEUCASPIS (Targ.-Tozz.), Sign. 

 1. Leucaspis pini. 



Coccus pini, Hart., Jahrb. lib. die Forts, des Forstwiss. (1839). Aspidiotus 

 pini, Bouche, Ent. Zeit. Stett. (1851), xii, 110, 2 ; nee Aspidiotus pini- 

 fol\i(2, Fitch, 2nd Rep. Nox. Ins., N. Y. St., p. 256, 1 ; Sign., Ess. s. Coch., 

 p. 64. Leucaspis Candida, Targ.-Tozz. (1867), Cat., p. 41. Leucaspis 

 pini, Sign., Ess. s. Coch., p. 146, pi. vi, figs. 2, 2a, 2b ; Low, Wien., Ent. 

 Zeit., i, p. 273, ii (1883), p. 5, 1 ; Witlaczil, Z. Morph. u. An. d. Cocc. 

 Wien. (1885), taf. 5, figs. 3— 7 j Morgan, Ent. Mo. Mag., xxv, p. 189, 

 pi. iii, fig. 3. 



On leaves of the Pinus maritimus, in the neighbourhood of 

 Oporto, I have found a species which bears a great resemblance to 

 the Leucaspis pini, Hartig, described and figured by Signoret, Low, 

 and Witlaczil (l. c), but both Dr. Signoret and Dr. Eranz Low 

 mention that the posterior margin is surrounded by a series of conical 

 spines, which I have not observed. In other respects the species I 

 am about to describe agrees with their description of L. pini, and 

 from the appearance of Signoret's figure, I am inclined to think that 

 the conical spines may have been the waxy secretions from the double 

 row of marginal secreting glands with which this species is furnished. 

 The special feature of the genus Leucaspis, which was indicated by 

 Targioni-Tozzetti, appears to have been considered by Signoret as the 

 posterior marginal fringe, consisting of the conical spines above 

 referred to, but if this fringe was merely the waxy secretion, this is 

 observable in different forms in all the species of Diaspina before they 

 are subjected to the heat necessary for microscopical preparation. 

 The genus, perhaps, might be maintained on other grounds, as it seems 

 to be a connecting link between 3Iytilaspis and JJhleria. The shape 

 of the scale is very like that of a Mytilaspis, but, like the JJhleria, it 

 has a very large second larval skin, which is entirely covered, dorsallv 



