290 
Psyche 
[December 
cockroaches, land-crabs 1 (Epilobocera armata Smith), cray- 
fish, 1 (Cambarus cubensis consobrinus Sauss.), Phrynids, 
numbers of tiny frogs (Sminthillus limbatus Cope) and an 
occasional blind snake (Typhlops lumbricalis (L.) 
Advanced nymphs only were found during March. These 
were in crevices under the stones, or in depressions in the 
soil itself. Across these cavities stretched various rootlets, 
on some of which were colonies of a queer yellowish aphid, 
with a white abdominal fringe (kindly determined by Dr. 
P. W. Mason as Prociphilus sp.) Under adjacent stones 
were other aphides (Ceratoglyphina sp., Mason) attended 
by ants which I failed to catch, but there were no signs of 
ants near the Bothriocera nymphs. Cyphomyrmex rimosus 
minutus Mayr (kindly determined by Dr. Wheeler) were 
cultivating fungus on caterpiller faeces, in their nest under 
another neighbouring stone. 
Usually two or three or even five of the nymphs occurred 
together, covered entirely by fine white flocculent material. 
Often they occupied a narrow crevice lined throughout 
with this waxy fluff. An adult was sometimes found (14th 
March) waiting beside its cast nymphal cuticle, in a kind 
of transparent cell of the same material. 
Last instar nymph: (Figures 8, 9). 
Length (long-abdomen stage) 4.5mm. 
Dorsal surface dark unicolorous brown, with a median 
paler dorsal stripe, under-surface paler. 
“Frons” swollen, smooth, passing without distinction in 
one round curve into the crown, but separated from the 
swollen clypeus by a sinuate groove. An irregular double 
row of small sensoria on extreme edge of “frons”. None on 
clypeus. Rostrum just passing base of hind coxae. Crown 
with an irregular triple row of lateral sensoria, the inner 
two series large and circular; a single row of small ones 
continued nearly all round posterior margin. First and 
second segments of antennae short and very stout, the 
second greatly swollen. Eyes small, sunken between antenna 
and edge of crown. 
iKindly determined by Dr. T. Barbour. 
