12 DR. J. G. DE MAN ON THE PODOPHTHALMOTJS 



the regions of the carapace are still distinctly indicated, the upper 

 surface, however, appears less uneven than iu D. hyhrida, and no- 

 where presents dentiform tubercles except in the median line, 

 where two minute scarcely prominent tubercles are found, one 

 in the' middle o£ 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. hyhrida ; 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. Andersoni. 

 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. hyhrida, 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 4| millim. high, the fingers measuring 7 millim. As in 

 D. hyhrida, 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 

 tbe cephalothorax of D. Bissonii 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 Boclea 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 

 351 millim. long, and the legs of the second pair are respectively 

 123 and 130 millim. long, so that, as in D. Andersoni, they are 

 nearly four times as long as the cephalothorax. 



Doclea Andersoni may be distinguished from D. hyhrida, Fabr., 

 by the less elevated, disciform cephalothorax, by the shape and 



