2nn THE SCHIZOPODA. 



number of features from the description and figures published by Sars, I asked 

 my friend the excellent carcinologist Dr. W. T. Caiman to examine the type 

 preserved in tlie British Museum. I sent him tracings of my figures published 

 in this paper of my specimen, together with a number of questions on particular 

 features. Dr. Caiman answered that the tyjje "agrees better with your descrip- 

 tion and figures than with those of Sars in all the points you mention," and he 

 added some notes and sketches which agree well with the features observed in 

 my specimens. Therefore I will now give the following additions to the descrip- 

 tion of Sars. 



The front margin of the carajDace (fig. 5a) is furnished with spiniform 

 processes or denticles, those on the most lateral foiu'th of each half of the margin 

 are long and slender, and from here they decrease \'ery much in size, being 

 quite minute along a part of the margin towards the proportionately narrow 

 and very short frontal plate which is produced into a rather slender and some- 

 what long, acute rostrum. The posterior mai-gin of the carapace has a number 

 of small or very small denticles, while the posterior margin of its lateral wings 

 and the lateral margins are unarmed. 



The eyes (fig. 5b) show peculiar features. The postero-lateral area of 

 ocelli is, seen from above, a little more than half as long again as broad; there 

 is no inter\-al between the anterior and the postero-lateral area; the most pos- 

 terior row of facets of the anterior area is of normal aspect, while each facet 

 in the four following transverse rows of the anterior area is produced into a 

 somewhat small, acute denticle; all other facets on the upper surface of the 

 eye are simple, rounded. From the inner margin of the eye-stalks a little before 

 the ocelli a very oblong, weak process or appendix projects forwards; in the 

 adult female it is about as long as the part with spine-bearing ocelli on the 

 opposite lateral margin. — The antennal squama (fig. 5c) is three times or a 

 little more as long as broad, with the outer margin scarcely concave, the terminal 

 lobe slightly broader than long and the outer distal process as long as, or a little 

 shorter than, the terminal lobe and bent slightly outwards. — The thoracic 

 legs (fig. 5d) on the outer side with a good number of moderately long setae; 

 the distal half or one third of each of these setae is quite naked, while the re- 

 mainder is very closely plumose; along the inner side of the legs the setae are 

 less numerous, but several among them are very long, and all are naked or with 

 extremely short hairs along the distal side. 



First to third abdominal segment without denticles along the margins; 

 fourth segment with very small denticles along the posterior and the lateral 



