28 Description of (jrenera and Species. 



Pseudo-Galathea maccoxochjei (E. Etheridge, jun.). PI. Ill, figs. 19-22. 



1879. Anthrapalceynon macconochii E. Etheridge, jun., Quart. Journ. Geol. Soc, 

 vol. XXXV., p. 471, pi. xxiii., fig. 10. 



1882. Anthrapalcemou. macconochii Peach, Trans. Eoy. Soc. Edin., vol. xxx., 

 p. 82, pi. viii., figs. 6-6d. 



Remai'hs. — Several specimens of this well-marked species occur in the collection 

 besides those used by E. Etheridge and myself for the original descriptions. The 

 carapace (fig. 20)^ with its longitudinal keels and postero-lateral angles produced into 

 long spines, but more especially the ridge running along behind the cervical fold and 

 connecting the dorso-lateral and lateral keels, strikingly remind one of similar arrange- 

 ments in some species of the recent genus Gnafhophausia Willemoes-Suhm, as figured 

 and described by G. 0. Sars. Fig. 19- also shows the relation of the carapace to the 

 tail. Fig. 22^ shows the anterior sensory organs considerably enlarged, the large short 

 stalked eyes, and the outer branch of the antennule which is the larger, but puny 

 compared with the lash of the antenna, in this respect being like TeaUiocaris and difier- 

 ing widely from the described modern genera. Fig. 21* shows the tail fan with the 

 characteristic terminal lobe and accessory swimmerets. This combination of characters 

 leaves little or no doubt as to the affinities of this species and genus. 



Pseudo-Galathea rotunda B. N. Peach. PI. III., figs. 23, 24. 



1883, Pseudo-Galathea rotunda B. N. Peach, Trans. Eoy. Soc. Edm., vol. xxx., 

 p. 514, pi. xxviii., figs. 6, 6a. 



Remarks. — A specimen occurs among the collection which evidently belongs to 

 this species, although it is even shorter and rounder than those figured. It is figured 

 here (fig. 23), as it throws additional light on the genus. The eyes, antennules and 

 antenna are much as in Ps. macconochiei. The present specimen, however, shows the 

 broad sternites of the trunk so characteristic of this group of Schizopods, and also the 

 proximal joints of at least six of the trunk legs, all of the uniform type and all on the 



' Reproduced from the Trans. Roy. Soc. Edin., 1882, vol. xxs., pi. viii., fig. 6b. 

 ^ Loc. cit., fig 6. 

 ' Loc. cit., fig. 6c. 

 * Loc. cit., fig. 6a. 



