1922..] S. Kemp : Notes on Crustacea Decapoda. 235 



guished is the position of the spines on the back of the tel- 



son. 



The specimen is 16 mm. in length. 

 3252/10. Andamnns. 'Investigator. 1 



One, Type. 



? Harpilius lutescens Dana. 



1 1852. Harpilius lutescens, Dana, U. S, Explor. Exped., Crust. I, p. 



570, pi. xNxvii, figs. 4a-h. 

 ? 1901. Harpilius lutescens, Nobili, Ann. Mus. Univ. Napoli (n.s.) I, 



3. P- 3- 

 ? 1906. Harpilius lutescens, Nobili, Ann. Set. nat., Zool. (9) IV, p. 63. 

 ?tgiS. Harpilius consobrinus, Balss, Denk. matli.-naturvo. Kl. K. 



Akad. Wien, XCI, p. 27. 

 192 r. Harpilius depressus, Tattersall, Jouin. Linn. Soc, Zool. 



XXXIV, p. 389, pi. xxviii, fi». 7. 



Dr. Tattersall has very kindly allowed me to examine the 

 specimen from the Red Sea which he recently recorded under the 

 name of Harpilius depressus. I find that this specimen is speci- 

 fically distinct from those 

 which I refer to //. depres- 

 sus and agrees less closely 

 with Stimpson's descrip- 

 tion. The second leg has 

 one spine at the distal 

 end of the merus on its 

 lower side, but none on 

 the ischium and carpus, 

 and on the inner margin 

 of each of the fingers 

 there is a series of five 

 small teeth. Of H. de- 

 pressus Stimpson says, 



''Pedes secundi grandes, laeves ; ischii, meri, carpique apicibus 

 dentibus spiniformibus armatis ; manu carapace duplo longiore, 

 digitis palma dimidia brevioribus, intus forte 2-3-dentatis." 



Dr. Tattersall 's specimen bears, a very close resemblance to H. 

 consobrinus, but differs from de Man's exhaustive description in a 

 few points which appear to have specific value. I attribute it with 

 considerable doubt to H. lutescens, the identification presupposing 

 a large amount of error in Dana's figures. 



The principal characters of the specimen are as follows : — . 



(i) The rostrum is deep and bears 7 teeth above arid 2 below. 

 The posterior dorsal tooth is situated on the carapace behind the 

 orbit. The midrib of the rostrum is not continuous with the orbital 

 margin, but curves round the orbit in the form of a sharp carina 

 some distance behind the margin proper (text-fig. 72). 



(ii) The antennal spine is placed close to the lower orbital 

 angle and is not supported by a carina. The hepatic spine is 

 situated below the level of the antennal and the antero-lateral 

 angle of the carapace is sharply rectangular. 



Text-FIG. 72. — '! Harpilius lutescens Dana. 

 Anterior part of earapaee, rostrum, etc. 



