THE CANADIAN ENTOMOLOGIST. 91 



Hab. — With Cremastogaster lineolata, two specimens in a nest at 

 Lawrence, Mass., July 15th, 1894. 



This is not a strictly typical Lecanopsis, but belongs apparently in the 

 subgenus or genus Spermococais of Giard. By its S-jointed antennae it 

 resembles L. formicariim, Newstead, but it differs at once from that by 

 the smaller (though still large) first antennal joint, the longer second joint, 

 the much longer third joint, the femur decidedly stouter, the tibia not 

 beset with numerous bristles, and the claw-digitules stout. Lecanopsis 

 is simply a segregate from Lecatiium, modified for underground existence. 

 Maskell's Lecanopsis filiciim hardly belongs here ; in some respects, but 

 not in others, it seems to approach Myxolecaniuin ; it also recalls in some 

 of its characters such forms as Lecanium Urichi. 



Fhetiacoccus americancp., n. sp. 



9 . — When alive fusco-testaceous, smooth, soft, sticky, and free from 

 any wax or down ; when put into alcohol its colour changes to a rufous- 

 violaceous, and it becomes quite wrinkled, its general form is rounded, 

 with a slice of nearly one-fourth cut off, making its under surface flat. 

 Length (in alcohol) 3^ mm., width 3 mm. 



$ (cleared and mounted). — Oval, brown of a rather warm sepia 

 tint, antennae and legs very pale yellowish. The legs are slender, and 

 although the insect is much larger, its legs are not so large as those of 

 some of the ant's-nest species of Riper sia ; but at the same time they are 

 well-formed and ordinary, not shortened or swollen as in the Lecariopsis. 

 Trochanter with one long and at least two short bristles. Femur little 

 longer than tibia, its inner margin straight, with four or five erect bristles; 

 its outer margin very gently arched or bent, with a conspicuous erect 

 bristle at the bend. Tibia slender, with eleven conspicuous bristles, 

 tending to form three whorls. Tarsus rather over two-thirds length of 

 tibia, with similar but finer bristles, no nobbed tarsal digitules. Claw 

 large, little curved, with a minute denticle on inner side near the tip ; 

 digitules of claw extending beyond its tip, slender, with hardly noticeable 

 knobs. Antennae slender, club not conspicuously swollen, formula 9 

 (123) (45678), or it might be written as well 9132 (87) (456), but the 

 additional differences indicated by the latter formula are almost too slight 

 to be accurately measured by the eye : 9 is very nearly as long as 7 4- 8 ; 

 I is cylindrical, its base not noticeably wider than the apex. The 

 joints have sparse whorls of hairs, 9 having two such whorls. Eyes 

 prominent. Mouth-parts small, mentum (so-called) very obscurely or not 



