12 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
the regions of the carapace are still distinctly indicated, the upper 
surface, however, appears less uneven than in D. hybrida, and no- 
where presents dentiform tubercles except in the median line, 
where two minute scarcely prominent tubercles are found, one 
in the middle of the mesogastric and one nearly in the middle 
of the anterior cardiac region. 
In its essential characters the under surface of the cephalo- 
thorax nearly resembles that of D. hybrida; but the two spines 
which in the latter are found on the sternum, between the legs 
of the second pair, are rudimentary or wanting in D. Andersont. 
The anterior legs or chelipedes, measuring 36 millim., are a 
little longer than the carapace. Regarding their form and 
structure they almost wholly resemble those of D. hybrida, the 
fingers nearly meeting along their whole inner margins; but the 
convex outer and inner surfaces of the hands are not only 
minutely punctate but also minutely granulate, when they are 
examined under a magnifying-glass; the palm is 9 millim. long 
and 44 millim. high, the fingers measuring 7 millim. As in 
D. hybrida, the fingers are covered on their outer and inner sur- 
faces with some small tufts of very short hairs. 
The legs of the second pair are 110 millim. long, and thus 
measure nearly four times the length of the carapace; as regards 
the shape and the relative length of their joints, I refer to the 
figure (Pl. I. fig. 1) or to that of Seba’s ‘Thesaurus.’ The 
other legs are wanting. Except the propodites and the dactylo- 
podites, the legs are everywhere covered with a close down. 
Professor Anderson kindly compared for me this species with 
the type specimen of D. Rissonii, Leach, which is preserved in 
the British Museum, and he informs me that the lateral spines of 
the cephalothorax of D. Rissonti are fewer and not so strong as 
in our new species, that in D. Rissonii there are only three short 
spines on each side of the carapace, and that the posterior is 
the shortest. The median spine, which occurs on the posterior 
margin, is also feebler in the Doclea of Leach. As regards the 
ambulatory legs, the two species agree in many points. The ce- 
phalothorax of the type of D. Rissonii in the British Museum is 
357 millim. long, and the legs of the second pair are respectively 
123 and 130 wmillim. long, so that, as in D. Anderson, they are 
nearly four times as long as the cephalothorax. 
Doclea Andersoni may be distinguished from D. hybrida, Fabr., 
by the less elevated, disciform cephalothorax, by the shape and 
