PLATE IV. 



Gnathophausia calcarata, G. 0. Sars. 

 Fig. 1. Adult male, from right side ; very slightly magnified. 

 Fig. 2. Same, from above. 



Fig. 3. Carapace of another somewhat smaller specimen, from below, a, supra-orbital 

 spines (1) ; h, autennal spines ; c, branchiostegal spines. 



Fig. 4. Anterior part of body, from below, exhibiting eyes, antennulse (a',), antennae (a'), 

 anterior lip (L), mandibles (M), mandibular palps (Mp), second pair of 

 maxiUse {nr), with their exognaths (ft), and the pigmented basal protuber- 

 ance (x), maxillipeds (mj/), with their rudimentary exopodite {p). 



Fig. 5. Antenna, with scale and proximal part of flagellum. 



Fio-. 6. Last caudal se^rment, from below, exhibiting the confluent epimeral plates. 



Fio-. 7. Extremity of tail, with caudal fan, from above. 



