416 Dr. W. T. Caiman on Macnirous Crustacea 



LVIII. — On Macruroiis Crustacea obtained by Mr. George 

 Murray during the Cruise of the 'Oceana' in 1898 ■^. By 

 W. T. Calman, D.Sc, University College, Dundee. 



The Macnirous Crustacea sent to me for examination by 

 Mr. George IMurray, F.R.S., are all of small size and all, 

 •with one possible exception, immature. Only one could be 

 referred with any confidence to a species already described ; 

 but I have not thought it necessary to give more than brief 

 descriptions of the solitary specimens of the other species. In 

 addition, there will be found below some remarks on the 

 characters and synonymy of the genus Atnalopenceus and on 

 the order of development of the gills in Pasiphaa. A speci- 

 men of Sergestes which proves to belong to a new species 

 will be separately reported on by Dr. H. J. Hansen of 

 Copenhagen. 



Family PenaeidsB. 

 AmalopoicBUS elegatis, S. I. Smith. 



AmaIope7i(siis ehgans, S. I. Smith, Rep. Crust. 'Blake,' Bull. Mu9. 

 Comp. Zool. Harvard, x. pp. 87-91, pi. xiv. figs. 8-14, pi. xv.figs. 1-5 

 (1882) ; Hansen, " Malacostraca marina Groenlandiaj occidentalis," 

 Vidensk. Meddel. fra dennaturh. Foren. i Kjobenhavn, 1887, p. 52; 

 Ortmann, Decapoden u. Schizopoden d. Plankton-Expedition, 

 pp. 27-28 (1893). 



Locality. Lat. 52° 18' N., long. 15° 53' 9'^ W. Net no. 5 h. 

 1410fath.t 21/11/98. Ojie specimen. 



The specimen recorded under this name is an immature 

 male about 20 millim. iu length, i. e. about two thirds of 

 the length of the smallest specimen recorded by Smith, with 

 whose excellent description and figures, however, it agrees 

 minutely, except in the one detail, to which Hansen has 

 already called attention, that the upper edge of the rostrum 

 is microscopically serrate. The genital appendages of the 

 first pair of pleopods (" petasma""^) are of small size and 

 imperfectly developed, but the various lobes and processes 

 indicated by Smith can all be identified. AVhen first 

 received the specimen (preserved in formalin) retained to a 

 considerable extent the striking coloration referred to by 

 Smith, the anterior appendages, and especially the maxillipeds, 

 being more or less suffused with bright purple, while the 

 marginal setse of these limbs were of a brilliant scarlet. 



* See Journ. Geograph. Soc. vol. xiii. no. 2, Feb. 1899. 

 t The method of capture was that of open tow-nets in series ; the depth 

 given in relation to each net refers to the computed position of the net. 



