ART. 12. MASKELL GENERA OF COCCIDAE — MORRISON. 23 



on the posterior abdominal segments, and between the median and 

 marginal rows with still another row of smaller pores on each side 

 of the body ; anal lobes present, with a long terminal seta, two small 

 spines and two setae on each ; anal ring with pores and six setae -, 

 Cauda present, rounded ; no body spines noted ; mentum 2-segmented, 

 with indications of a second joint close to the base. 



Cotype.—C^t. No. 24756, U. S. N. M. 



There are 10 species besides the type that are included in this 

 genus at present. No careful study of all of them has been possible, 

 but from such notes as have been made, it seems probable that their 

 inclusion in this genus is correct. 



The following generic diagnosis has been based primarily on the 

 type species, but should also cover other species which may properly 

 be included with it. 



GENEKIC DIAGNOSIS OF SOLENOCOCCUS. 



Asterolecanine coccids forming a horny or tough waxy test usu- 

 ally with a posterior tube or spout; adult female membranous, an- 

 tennae reduced to tubercles; legs wanting; without spiracular 

 spines, with dorsal cribriform plates, with well developed anal tuber- 

 cles, with a median cauda above the anal ring, the latter with pores 

 and six setae, derm setae relatively few and inconspicuous ; derm with 

 numerous 8-shaped pores, sometimes more or less definitely ar- 

 ranged, rather large quinquelocular pores and long tubular ducts, 

 and finally minute clear or faintly multilocular pores; intermediate 

 stage female quite similar to adult, but without cribriform plates; 

 larva with 6-segmented antennae, normal legs, 8-shaped pores in 

 longitudinal rows both dorsally and laterally, some large quinque- 

 locular disk pores, well developed anal lobes, setae, a median cauda, 

 and an anal ring with pores and six setae. 



This genus appears to have a distinct and valid place within its 

 subfamily, in so far as the character of the included species is con- 

 cerned. The writers have had no opportunity to study the type 

 of Comstock's genus Gerococcus^ and are therefore unable to verify 

 Green's indication that Solenococcus is a synonym of this genus, 

 although from an examination of the available literature his con- 

 clusions appear to have been correct.^ 



Subgenus Thekes Maskell. 

 Plate 2, fig. 1. 



Genotype. — Eriococcus eucalypti Maskell. 

 Reference.— F^rndildi, Cat. Cocc. World, 1903, pp. 70, 74. 

 As Mr. Crawford's only connection with the name given above was 

 to place it as a label on some of the specimens in his collection, it 



T See Green, Cocc. Ceylon, pt. 4, 1909, p. 305. 



