Sept, 1898.] Townsend & Cockerell: On Mexican Coccida;. 169 
antennae of first larval stage of littoralis var. mimosa Ckll., differ from 
typical littoralis in the more uniformly stout basal joints and stout last 
joint, the intermediate joints being narrowed, giving the antennae a 
constricted appearance in the middle. In typical littoralis the basal 
joints seem nearly as narrowed as the intermediate ones. Both the 
typical form and var. mimosa have the last antennal joint of first larval 
stage with several (about 3) very long hairs. Both also have the lateral 
bristles of border of abdomen anterior to anal bristles, in first larval 
stage, well differentiated from other lateral hairs, thus falling in the 
group with rosa , montserratensis and palmeri. 
The antennae of adult 9 were both broken, one showing nine joints, 
the ninth joint being fractured and the distal portion missing. But the 
identity of the newly hatched larva with that of littoralis proves the de¬ 
termination beyond doubt. 
Ortonia primitiva, sp. nov. Towns . 
Differs from O. mexicanorum Ckll. as follows: Antennae only 9 jointed, less than 
twice as long as femur plus trochanter, more than twice as long as femur alone, the 
first five joints being about equal in length to the femur plus trochanter. Approxi¬ 
mate antennal formula, (39) (21) (678) (45). Ninth is not as long as seventh and 
eighth together. The only joints that are broader than long are 1, 2, 4 and 5. 
Joints 3, 6, 7 and 8 are about as broad as long. In some cases 8 seems a little longer 
than 6 and 7. The last three joints are approximately equal in width, while the 
other joints gradually narrow proceeding toward the base. Joint 1 is perhaps f- wider 
than 2. Tibia more than longer than femur, and but little more than JJ as broad 
as femur, being rather slim. Tarsus (not including claw) about length of tibia 
with about seven spines in a line on inner edge, tibia with about ten such spines. 
Claw apparently with a short stout rudimentary digitule. Under and outer edge of 
claw on each side delicately scalloped, showing four scallops. No bristles apparent 
on claw. Integument showing the large round and oval hyaline spaces said to be 
characteristic of the genus, and thickly covered everywhere with numerous long strong 
spines interspersed with shorter ones. Boiling in IvHO stains the liquid brown. 
Length of 9 after boiling, about 5 or 6 mm.; dried unboiled ones are 3 mm. long, 
by 2 mm..wide. One of the larger specimens is accompanied by a considerable 
amount of pure white, fluffy, cottony secretion, which may form a substitute for an 
ovisac in this species. This cottony secretion, which does not seem to be present in 
mexicanorum , together with the presence in the debris of small orange-colored eggs, 
indicates that the material is adult. 
This species and mexicanorum need the erection of a separate sub- 
genus for their reception, perhaps two subgenera. I propose the name 
Protortoma for the present species, and it may even be found to merit 
generic rank, as being quite distinct from Ortonia. For the present, 
O. mexicanorum can be included in it also. 
