THREE NEW COCCIDJB FROM NORTH AMERICA. 351 



There is no known American genus which could contain this 

 insect. It is related to Fairmairia, Signoret, founded on a single 

 species from the South of France ; and to Inglisia, Maskell, a 

 New Zealand genus. I thought it might be referred to Inglisia, 

 until I compared it with five species of that genus, kindly sent to 

 me by Mr. Maskell. These species show characters of the scale, 

 — the striation, semitransparency, &c., which do not occur in 

 F. nivea. While they differ considerably from one another, they 

 have a facias of their own, and apart from the difficulty of 

 accounting for the presence of an Inglisia in Mexico, I do not 

 think the scale now described can be placed in Maskell's genus. 



On the other hand, our scale is not altogether like that of 

 Fairmairia; but it seems best to leave it in that genus for the 

 present, placing it in a subgenus Ceroplastodes, which is charac- 

 terised by the more or less hemispherical scale with dorsal 

 knobs, the divided rostrum, and the seven-jointed antennse. 



If necessary, this name can be used in a generic sense. An 

 orange-coloured mite was found associated with F. nivea. 



Ceroplastes irregularis, n. sp. 



Found six miles north of Montezuma E. E. Station, State of 

 Chihuahua, Mexico, on stems of Artemisia.^ 



Scale. — About 5 mm. long or less, hemispherical, moderately depressed, 

 but extremely irregular, and in many cases almost shapeless, appearing like 

 a mass of cereous nodules. Colour pale ochreous. No definable plates. 

 Dorsal knob inconspicuous. Adjacent scales often running together. This 

 is by far the most shapeless and nodulose Ceroj^lastes I have seen. 



Adult female. — Derm yellow-brown, perforated in most parts by large 

 holes or gland-pores. Legs present ; trochanter with a long hair ; femur 

 about as long as tibia ; tarsus nearly as long as tibia, the long tarsal bristle 

 of larva represented by a short stout spine. 



Egg (in soda). — Oval, brown. 



Larva. — Elongate, boat-shaped in outline, widely cleft posteriorly, legs 

 long. Caudal filaments moderately long; diverging, but curving inwards 

 towards their ends ; each with a small bristle on its inner side {i. e., on the 

 margin caudad of it), and with two small bristles cephalad. Tarsus of hind 

 leg with a very long bristle ; knobbed hairs of tarsus slender and remarkably 

 long ; digitules of claw also slender and long. Antennae six -jointed : 3 and 6 

 longest ; 6 variable, sometimes about as long as 3, usually shorter. In some, 

 joint 3 shows a false joint, or tendency to split into two. Last joint with a 

 long hair. 



I quite expected that this would prove identical with the 

 undescribed C. artemisice, Eiley MS. ; but on sending specimens 

 to Prof. Eiley, I was informed that it was distinct. C. artemisice 

 was found in New Mexico ; it is unknown to me. 



* Since writing the above, I have had my doubts about the food-plant. 

 It was not in flower, and I think it may have been Sarcohatus. Conse- 

 quently I have changed the specific name which connected the insect with 

 " Artemisia. 



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