4 PROCEEDINGS OF THE NATIONAL MUSEUM. t»l. 80, 



have expanded the generic diagnoses accordingly, and have also made 

 suggestions as to the possible relationships of the genus. Unfortu- 

 nately little or nothing of this sort could be contributed with far too 

 manj'^ of the genera. 



The text figures showing the structural characteristics of the vari- 

 ous species have been prepared by the junior author. 



DESCRIPTIONS OF GENERA AND SPECIES. 



Family COCCIDAE. 

 Subfamily Monophlebinae. 



Genus MONOPHLEBULUS CockerelL 



Plate 1, fig. 1. 



Genotype. — Monophlehus fuscus Maskell. 



Reference.— FQviidl^, Cat. Cocc. World, 1903, p. 19. 



This genus was established by Prof. T. D. A. Cockerell in 1902, on 

 the basis of the presence of 7-segraented antennae in the adult female, 

 and with only the single included species, which must therefore be 

 the type species. 



This species is now represented in the Maskell collection by three 

 slides, two each with a single larva, one dated 1892, the other 1894, 

 and one with an antenna, a leg, and a portion of the derm of the adult 

 female dated 1892, and by a single unmounted female with the Mas- 

 kell No. 286. It is possible to obtain a little light on the character- 

 istics of this species from the larvae and the pieces of the adult fe- 

 male, but few structures may be described in detail. 



Adult female. — Elongate ovate, much shriveled when dry, body 

 more or less covered by white secretion and with numerous glassy 

 threads protruding from this secretion, especially along the margin 

 where they form small bundles ; antenane 7-segmented. varying from 

 the normal monophlebine type only in a reduction of the number of 

 segments from that usually present and in the shortening of the in- 

 dividual segments; legs normal monophlebine type, tarsal digitules 

 represented only by the stubs; mentum not available for examina- 

 tion ; spiracles not available for examination ; derm, so far as can be 

 determined from the very small piece available, with at least three 

 types of pores, two circular, one smaller, apparently flat, with trilobed 

 center and an oval pore between each two lobes and the surrounding 

 ring, the other larger, apparently more heavily chitinized, normally 

 with a larger center surrounded by a circle of several somewhat 

 smaller pores, but this arrangement variable, so there may be one 

 large pore and two or three smaller pores in the center of the pore 

 circle, the third pore type large, heavy, trilocular tubular ducts, these 



