36 
Genus CONCHASPIS Cockerell. 
Conchaspis Ckll., Bull. Bot. Dept. Jamaica, No. 40, Feb. [publ. March], 1893; 
Journ. Inst. Jamaica, No. 6, April [publ. May], 1893; Gard. Chron., May 6, 
1893. VseudinyUsia Xewstead, Ent. Mo. Mag., July, 1893, p. 153. 
Conchaspis angraeci var. hibisci n. var. 
Female scale. — Differs from angrceci in being perhaps a little larger, 
grayish white, with the apex tilted over onto the side: strong ridges, 
about three in number, run from the apex toward the opposite margin. 
Adult female. — Derm colorless, with the last three abdominal segments 
strongly tinged with brown. Shape elongate-oval. Mouth -parts large ; 
rostral loop either hardly reaching to level of insertion of middle legs, 
or longer, reaching to insertion of hind legs. Eyes as usual in genus; 
round gland orifices or spinnerets also normal. Legs short; femur 
stout, decidedly longer than tibia and tarsus. Claw moderate. An- 
tenna 1 short, somewhat tapering, brownish, 4- jointed, 2 somewhat long- 
est, the others about equal in length. Abdomen ending in a pair of 
contiguous lobes, rapidly descending and notched without. Segments 
with long bristles on their lateral margins, usually a pair on each side 
but sometimes one, sometimes three. In the thoracic region these bristles 
are very long, but they become successively smaller on the abdomen. 
Habitat. — Tampico, Mexico, on Hibiscus sp.jyrob.Jloridcmus, (Town- 
send No. 28 = Div. Ent. Dept, Agr. No. 6439.) 
This occurs on the twigs and leaf steins, whereas the typical angraci 
is found on the leaves of orchids. I place this as a variety of angrwci, 
because there is so little in structure to distinguish it, but I presume 
it is a "physiological species," breeding true and never occurring on 
orchids. 
Dactylopms olivaceus n. sp. 
Female (in alcohol). — Long. 34, hit. 2J, alt. l£min.; dark olive brown, 
distinctly segmented; on drying becoming whitish from a covering of 
mealy powder. Posterior tubercles obsolete. Antenme and legs 
brown; legs shorter than their distance from one another. Antenmc 
slender, distinctly narrower than tibia, 8-jointed; 8 extremely long, 
cylindrical, a little longer than and 7 ; 1 large, longer than broad ; 1, 2, 
and 3 subequal in length, then 6 and 7 subequal, then 5, then 4 very 
short; formula 8 (1, 2, 3) (6, 7) 5, 4; joints with sparse whorls of short 
hairs. Legs very stout, coxa extremely large, the trochanter large. 
Femur about as long as tibia and tarsus. Tibia about one-third longer 
than tarsus. Tibia and tarsus apparently with a longitudinal groove, 
but this appearance is certainly no groove, but seems to be the tendon 
of the extensor muscle. The usual four digitules present ; the tarsal ones 
quite long, about as long as tarsus. These 'digitules all filiform, with 
small round knobs. Derm (by transmitted light after boiling) pale 
pinkish, transparent, with scattered small round gland spots. Hairs 
of anogenital ring very small and slender, easily overlooked, Embrvr 
