Sept. 1898.] TOWNSEND & COCKERELL : On MEXICAN CoCCID^E. 117 



O . Capitate spines of integument present same form as in ceriferz<s. Claw 

 short, digitules of claw about twice as long as claw, unequal, one very stout and that 

 knob extremely large, the other more slender and widened or flattened leaf like at end. 

 Femur rather stout, swollen, rather long oval in outline, without the trochanter about 

 as long as tibia; tibia about one third as wide, parallel-sided. Tarsus a little more 

 than half as long as tibia. Tarsal digitules filiform, well knobbed at end, reaching a 

 little farther than to the ends of claw digitules. Antennae 6-jointed, the last three 

 joints nearly equal in length, the sixth slightly longest, the third very long and a little 

 wider than the following ones; the first and second about equal and each less than or 

 about one-third as long as the third. The fourth and fifth are about one-half again 

 as long as wide ; the first is somewhat wider than length of second ; the second is 

 truncate-conical, its basal width being about equal to its length, its distal width a little 

 more than one-half its basal. 



The only other known roseate forms of Ceroplastes are, a variety of 

 floridensis, which is easily distinguished by its much smaller size ; and 

 aibolineatis, which was described from Jamaica, and is a very common 

 species in Brazil, but is at once distinguished by the two conspicuous 

 white lines on the sides. 



On branches of a wild fruit tree locally called " cojon de venado," 

 El Cuyo del Chicosapote, near Frontera, Tabasco, June 18, 1897 (Town- 

 send). Dtv. Ent., No. 761 1. 



Lecanium tuberculatum, sp. nov. 



Q. Scale very convex, rounded-oval, sometimes nearly round, normally about 

 4 mm. in length, 3 mm. in width, and 2 mm. in height. Color clear reddish-brown, 

 the margin narrowly dark brown. Scale finely tuberculate and pitted near border, 

 coarsely and less conspicuously tuberculate on rest of surface, the low rounded 

 tubercles with shallow pits or furrows between them. In shrivelled scales the fine 

 tuberculation is more extentive and conspicuous. Most specimens also show a pair 

 of longitudinal dorsal impressed lines, with one or two less distinct lines running 

 across them at right angles. No glassy secretion apparent on surface of scale. The 

 blackish rim and tuberculate character of the scale will serve to distinguish it from 

 perconvexum, which is uniformly blackish and with only the row of fine tubercles 

 near rim. 



Legs very short, tibia and tarsus equal in length and about as long as broad ; 

 the tarsus hardly narrower than tibia, rounded apically and not pointed; claw short, 

 stout, strongly hooked, and about half the length of tarsus ; femur but little longer 

 than tibia, wider basally than apically, and as long as apical width. Digitules o* 

 tarsus and claw stout, filiform, the claw digitule apparently longer than the tarsal, 

 which latter is about as long as the claw itself. Anal plates subtriangular, together 

 forming nearly a square, but somewhat rounded on the caudo-lateral margin. Anal 

 ring with four bristly hairs showing between the opened plates. Dermis chitinous, 

 with gland pits moderately small and rather numerous. Boiling in KHO stains 

 liquid pale brown. 



Belongs to the neotropical group of perconvexum, ehilaspidis, urichi, 



