new or rare Crustacea from Scotland. 245 



superior antennse, the peculiar arrangement of the hairs at the 

 base of the flagelkim of the same antennae, the longer 

 mandible-palp, and the form of the largely developed basal 

 joint of the last pereiopods. 



As was pointed out by the Rev. Mr. Stebbing several years 

 ago, there appears to be comparatively little difference between 

 Cyproidia, Haswell, and Stegoplax, G. O. Sars. The only 

 characters of any value that appear to separate the two genera 

 are the apparent presence [Cyproidia) or absence (Stegoplax) 

 of a minute secondary appendage to the superior antennse, 

 and the hands of the second gnathopods being larger than 

 (Cyproidia) or similar to [Stegoplax) the hands of the first 

 gnathopods ; the difference of length of the rostrum can only 

 be of specific value. The Moray Firth specimen, in possessing 

 no secondary appendage to the superior antennge, agrees 

 better with Haswell's amended description than with that of 

 the ±lev. Mr. Stebbing, as well as exhibits a close affinity 

 with Stegoplax. 



EXPLANATION OF THE PLATES. 

 Plate XL 



Diosaccus propinquus, sp. n. 



Fig. 1. Female, seen from the side, x 40. 2. Anterior antenna, X 152. 

 3. Posterior antenna, X 127. 4. Foot of first pair, X 84. 

 5. Foot of fourth pair, x 84. 6. Foot of fifth pair, x 127. 



Laophonte littorale, sp. n. 



Fig. 7. Female, seen from above, X 54. 8. Anterior antenna, female, 

 X 190. 9. Foot of first pair, x 254. 10. Foot of fourth pair, 

 female, X 254. 11. Foot of fifth pair, female, X 190. 12. Foot 

 of fourth pair, male, X 254. 13. Foot of fifth pair, male, X 380. 

 14. Appendage to first abdominal segment, male, X 263. 



Remigulus tridens, gen. et sp. n. 



Fig. 15. Female (?), seen from above, x 54. 16. Posterior antenna, 

 X 190. 17. Maxilla, X 380. 18. Anterior foot-jaw, x 380. 

 19. Posterior foot-jaw, x 506. 20. Foot of fourth pair, X 152. 



Plate XII. 

 Hemtgulus tridens, gen. et sp. n. 



Fig. 1. Anterior antenna, X 190. 2. Mandible, x 506. 3. Foot of 

 first pair, x 152. 



Pseudocletodes vnrarensis, subgen, et sp. n. 



Fig. 4. Female, seen from above, X 48. 5. Anterior antenna, female, 

 X 253. 6. Posterior antenna, X 253. 7. Mandible and palp. 



