242 [April 



In P. Proteus the $ scale, normally elongate, but often short, flat, broad-oval, I 

 pale yellowish-brown, the first exuvice rounded-oval, the 2nd long-oval and conspi- 

 cuously large, the 3rd smaller. Length, 1'5 — 2 mm. 



S scale narrow, linear, coloured like the $ , but the exuvia; at the base black ;, 

 the middle not keeled, but depressed, or with a longitudinal fissure when the imago 

 has come out. Length, 1 mm. 



? adult : only three marginal lobes on the last segment, the 4th being replaced 

 by a fringed plate. 



$ imago clear reddish -yellow, wings white with red nerves (Signoret). 



In May last Mr. P. Cameron sent me some leaves of Dendrohium 

 and Oncidium having on the under-side, along the midrib, numerous 

 scales, which proved to be those of the $ of Parlatoria Proteus ; on 

 the same leaves were also a few of the ^ scales, situated either singly 

 or in small batches, but empty. ! 



Var. crotonis. — 'At the same time Mr. Cameron sent me some , 

 leaves of a Croton, to which were attached, on the under-side, along 

 the midrib and under the incurved edges, many scales exactly like the 

 $ of P. Proteus. But examination of the insect beneath, made b\ 

 Mr. G. S. Saunders, showed a divergent structure of the margin of 1 

 the last segment which approximated that of P. Pergandii, and this 

 being a species described by Prof. Comstoek, and of which there was 

 a quasi variety — cameUice— (Report, 1883, p. 114), I thought it best 

 to send him some of these scales. He says respecting them : — 



" The Parlatoria on Croton approaches P. Pergandii in having the 4th and 5th 

 lobes, but these are very small. Ijaterad of the 5th lobe there are fewer plates than 

 in either of the species described. The scale resembles that of P. Proteus.^' 



In December I received from Mr. Sowerby, Royal Botanic Society's 

 Gardens, Regent's Park, leaves of three species of Croton on which 

 these scales were abundant. 



On plate iv of his " Report" for 1883, Professor Comstoek has 

 figured the margin of the last segment of the $ of the three known 

 species of Parlatoria (including the var. cameUice) showing the differ- 

 ence of structure at one view. 



TuE Genus LEPIDOSAPHES, Suimee. 



Only quite recently there has come under my notice a Note by Dr. Franz Low, 

 in the " Verhandl. der k. k. zool.-botan. Gesells. Wien," 1882, p. 522, to the effect 

 that the genus Lepidosaphes, Shimer, founded on Aspidiotus pomorum, Bouche, 

 published in vol. i of the " Transactions of the American Entomological Society," 

 1868, has priority over Signoret's genus Mytilaspis, characterized in part 6 of his 



