REPORT ON THE PYCNOGONIDA. 51 



I wish to point out as a very interesting peculiarity of this species, that I observed a 

 female specimen with highly developed ovaries in the fourth joint of its legs, which bears 

 a distinct egg-mass on its ovigerous leg. The shape of the ovigerous leg is almost 

 identical with that of a male. In other respects it looks quite like a female. 



Habitat. — This sjDccies seems to abound in the neighbourhood of Kerguelen Island. 

 Miers {loc. cit., p. 213) only says that several specimens were collected at this island, but 

 Bohm {loc. cit., p. 177) mentions specimens collected in Royal Sound, Irish Bay, and 

 Great Whale Bay, from a depth of 15 to 65 fathoms. 



The Challenger brought specimens home from Station 149. January 17, 1874. Lat. 

 47' 40' S., long. 70° 20' E. Off Royal Sound. Depth, 25 fathoms. 



January 20, 1874. Royal Sound. Depth, 28 fathoms. 



January 29, 1874. Off Christmas Harbour. Depth, 120 fathoms. 



Observations. — After a close examination of the numerous specimens of this Pycno- 

 gonid, I at first believed it to be different from the Nymiihon hoi'rklum of Bohm, so I gave 

 it the name Nymphon hispidum, which name is still to be found on Plates IV. and 

 V. of this Report. After a renewed examination, and having acquired, I believe, by 

 continuous study some knowledge of the relative value of characteristic marks, I think 

 there can be no doubt about the identity of Bohm's species and the specimens brought 

 home by the Challenger. Unfortunately the two plates are printed off, and thus Ijear 

 the name originally proposed by me. 



However, the name proposed by Bohm ought also to give place to another, viz., 

 that of Miers. The description of Mr Miers originally published was too short and insuf- 

 ficient, therefore Mr Bcihm was c[uite justified in considering his specimens as distinct 

 and proposing for them the new name Nymphon Jiorridum. This happened in 1879. 

 In the same j^ear Mr Miers published a more detailed description with figm'cs, which 

 made it certain that Bohm's, Mier's, and my specimens belonged to the same species ; this 

 must, I think, bear the name originally applied to it by Mr Miers. 



The latest description of this author, however, is by no means exhaustive ; his figures 

 are very small, and when he says that the number of claws at the end of the leg is two, 

 it is evident that he has not studied the details with a high enough power. 



Bohm's description and drawings are much superior to those of Miers ; they difier 

 from mine in the following respects : — On the dorsal surface of the body he figures rows of 

 hairs between the different segments, whereas I observed star-like groups of hairs. He 

 gives the mandibles a much more elongated form, and furnishes the claws with very 

 irregular teeth. On the legs, Bohm says, the hairs and spines are arranged in regular 

 rows, whereas I failed to observe this regularity. The two tarsal joints as figured liy 

 Bohm are nearly of the same length, but I always observed that the second was much 

 longer than the first. Minor differences in the form of the eyes, distril^ution of the hairs, 

 &c., it is unnecessary to discuss. The more important ones which I have pointed out 



