170 A HISTORY OF RECENT CRUSTACEA 
sinide. In the family he only places, besides Pylocheles, 
Pomatochéles, Miers, 1879, and a new genus Cheiroplatéa, 
and, as he states that it includes all those paguriform 
Anomura that are trichobranchiate, he was evidently un- 
aware that the family Parapaguride had been already 
established by Smith for this very purpose. His Chevro- 
platea cenobita (see Plate X.) from the Pacific is no doubt a 
remarkable animal, having among other singular charac- 
ters a chelate extremity to the third maxillipeds. The 
single specimen is a female with very large but not very 
numerous ova. Mr. Bate compares it with Glaucothoé, 
Milne-Edwards, which Miers and Bate agree in regarding 
as only an adolescent form. Considering Cheiroplatea in 
its adult condition as representing a link between Cenobita 
and the trichobranchiate Macrura, Mr. Bate remarks that 
‘it has an appearance strongly suggestive of its being allied 
to a Pagurus that had failed to obtain a molluscous shell 
for itself, and had consequently retained some of the ma- 
crurous characters of its youthful condition.” Both Pylo- 
cheles and Cheiroplatea recall the earliest post-larval forms 
observed in the Paguride. 
Legion 4.—Porcellaninea. 
The carapace is well developed, broadly ovate, smooth, 
with the regions faintly defined. ‘The eye-stalks are short 
and stout, the eyes always pigmented and partially con- 
cealed in orbits. The first antennz are concealed. Inthe 
second antenne the peduncle is directed backwards, its 
second and third segments are coalesced, the flagellum is 
long and slender. The third maxillipeds have the third 
joint broad, the fourth provided with a prominent internal 
lobe. The chelipeds are broad and often flattened, the first 
three pairs of walking-legs well developed, the last pair 
slender and inflexed. The pleon is symmetrical, bent under 
the trunk, having on the sixth segment a pair of lamellar 
appendages which with the telson form a swimming fan ; 
also in the male it has a pair of genital appendages on the 
second segment, and in the female a pair of uniramous 
