46 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 60. 



and more numerous slender setae, the latter varying considerably in 

 size; so far as can be noted, with only two types of "derm pores, quin- 

 quelocular disk and large tubular, the latter opening into a somewhat 

 chitinized circle and with the inner end appearing slightly bilobed 

 from some angles at least ; anal lobes completely wanting, no traces 

 of apical spines or setae evident; anal ring set well in from the 

 margin, circular, bearing about 20 setae, mostly large, but some 

 slightly but distinctly smaller, and with pores, these not in continuous 

 rows as in Pseudococcus and its relatives, but with a circle of pores 

 around the base of each seta, an arrangement similar to that already 

 described for Sphaerococcopsis. 



Intermediate stage. — Not known. 



Larva. — Small, broad oval, flat, margin of body with a continuous 

 series of flat, pointed flabellate spines, these shorter and broader 

 anteriorly, longer and more slender posteriorly, the continuous row 

 interrupted only a little on each side of the head at the eyespots; 

 with a total of 31-32 pairs of these around the body, the three 

 posterior pairs smaller and very frequently broken off more or less 

 at the apices; antennae 6-segmented, cylindrical, the apical segment 

 longest, with a seta at apex about as long as the whole antenna and 

 with the three apical segments each with one or more slender curved 

 spines ; legs rather stout, the tibia noticeably shorter than the tarsus, 

 the digitules slender with a slight knob at apex, the tarsal about 

 twice the length of the claw, claw without denticle ; mentum small, 

 short triangular, apparently 1-segmented; dorsal ostioles wanting, 

 anal lobes not developed, the apex of the body with only an incision 

 for the anal ring; lobes indicated by the presence of a long slender 

 seta on each side of the ring, between the second and third flabellate 

 spine; anal ring small, vertical, so far as can be observed with six 

 setae, of Avhich the lower two are distinctly larger than the others, the 

 presence or absence of pores in ring not determinable ; body appar- 

 ently Avithout derm pores ; dorsally with a submedian row of slender 

 setae each set in a large ring base, with an additional pair of these on 

 each side of the thorax ; ventrally with a submarginal row of minute 

 spines, one to a segment, and on the posterior abdominal segments 

 with an inner similar row. 



Cotype.—C^t. No. 24762, U.S.N.M. 



All of the three species described by Maskell as members of this 

 genus can probably be properly retained in it. It is doubtful if any 

 of the others subsequently placed here are properly assigned, since 

 it seems apparent that later writers have confused certain Pesudo- 

 coccine forms with this genus on account of the numerous anal ring 

 setae. The writers can not relocate these species definitely, but 

 suggest the possibility that the genus Lachnodiella Hempel (origi- 



