46 THE ENTOMOLOGIST. 



Larva. — Eather elongate ; colour (after boiliug) pale greenish, with 

 usually a large browu spot in the region of the niouth ; eyes blue ; 

 spines large ; the two caudal lobes look like long-fauged incisor teeth , 

 but only project above the margin as two very minute nodules. 



Hah. Zapotlan, Mexico ; crowded on small branches of 

 Mimosa sp., July 6th (C. 11. T. Townsend). 



Mytilaspis townsendiana, n. sp. 



$ . Scale 2 mm. long, convex, narrow, often curved ; white, with 

 orange-brown exuviae. ^ scale as usual. 



? . Adult. Colour (after boiling in KHO) pale yellowish green ; 

 the two segments anterior to the terminal portion much produced at 

 the sides, into rounded lobes directed backwards, these lobes having 

 many round glands. No circumgenital glands, but numerous round 

 dorsal glands, much as in M. ulmi ; a curved baud of these glands on 

 each side of the anal orifice, simulating a continuous band of circum- 

 genital glands, but differing by the glands being smaller and not so 

 close together, irregularly placed. Transverse submarginal glands of 

 the usual type. Small pyriform marginal glands of the usual type ; 

 two under each median lobe ; two under the first (larger) portion of 

 second lobe, the first of these small ; two very small ones under the 

 small portion of second lobe ; a large one under each half of third 

 lobe ; four others under projections of the margin beyond. Spines 

 rather large ; squaraes not large. Lobes striated ; median lobes not 

 far apart, large, rounded, and entire ; second lobes divided into a large 

 inner and small outer lobule, the inner minutely crenulate on its outer 

 slope ; third and fourth lobes each represented by a couple of low 

 crenulated processes, those of the fourth much broadest ; one or two 

 pointed processes on the margin beyond. The margin beyond the 

 third lobe might be said to be irregularly serrate. Antenna with two 

 bristles. Anal orifice to tips of median lobes about 114 /a ; breadth of 

 median lobes about 12 /t,. 



? . Second stage. Colour (after boihng) pink. Lobes formed as 

 in adult, but second lobe is low and entire. 



Larva. — With two large low lobes, widely separated. Femora 

 swollen. 



Hob. Colima, Mexico ; abundant on small branches of 

 "garabatillo," July 13th (C. H. T. Townsend). Easily separated 

 from M. alba by the narrower scale and entire median lobes. 



Neolecanium LEUCiEN^, n. sp. 

 $ . Large and very convex^ but not constricted at base ; long. 10, 

 lat. 6^, alt. 6 mm., varying to long. 8J, lat. 7, alt. 6| mm., rather dark 

 ferruginous, not very shiny, not tuberculate, more or less covered with 

 small patches of dull white waxy secretion ; sides pitted. Legs and 

 antennae absent. Skin (after boiling) orauge-ferrugnious, with numer- 

 ous round or oval gland-pits, mostly rather large, but in places the 

 skin shows only very minute glands. Skin mottled with brown in a 

 more or less radiate manner. Anal plates surrounded by a hyaline 

 area; the plates triangular, witii rounded corners, the anterior lateral 



