330 DR. H. J. HAKSEN" ON^ THE [NoV. 29, 



he says : " propodos subtriangnlar in outline, the pahn transverse, 

 concave, armed with a few short bristles, and defined by a promi- 

 nent acute tooth ; dactylos much longer than the palm ; " thus 

 description agrees well with his fig. 2 c, biit hand and especially 

 the " dactylos" difi:er miich from the structure in all other species 

 of Stenetrium, and agree mvich more with the same parts in males 

 belonging to a genus allied to lanira. The length is " about 



in." Haswell's type is from Port Jackson. 



EXPLANATION OF THE PLATES. 



Plate XIX. 



Fig. 1. Stenetrium armatttm Hasw. (p. 318). 



Fig. Iff. Head with front end of thorax of a female, from above; X 19. f., frontal 

 plate ; p., process from basal joint of antenna ; s., squama of antenna. 



1 h. Distal part of first right thoracic leg of a female, from the exterior side 

 (from behind) ; X 30. 



1 c. Abdomen of a female, from above ; X 19. Setfe and nropoda wanting. 



1 d. Abdomen of a female, from below ; X 9. a, fii-st pair of pleopoda con- 



stituting a small operculum ; h, sj-mpod of third pleopoda. 



Eig. 2. Stenetrium mediterraneum, sp. n. (p. 320). 



Fig. 2 a. Head of an adult male, from above ; X 22. 



2 b. Distal part of first left thoracic leg of an adult male, from the exterior 



side; X30. 

 2 c. Palmar edge of the hand and seventh joint with claw of the leg shown in 



fig. 2 J ; X 57. 

 2 1^. Subdistal spines from the lower side of seventh joint of the leg shown in 



fig. 2 7j; X 212. 

 2 e. Spine from lower end of palmar edge of the leg shown in fig. 2 6 ; X 212. 

 2 /. Distal part of first left thoracic leg of an adult female, from the exterior 



side ; X 30. 



2 g. Abdomen of an adult male, from above ; X 20. 



2'h. Second left pleopod of an adult male, fi'om in front ; X 45. 



Eig. 3. Stenetrium serratum, sp. n. ; adult female (p. 323). 



Fig. 3ff. Head, fi-om above; X 22. 



3 h. Lateral part of the two anterior thoracic segments with their legs, from 



above ; X 22. _ 



3 c. Distal part of first left thoracic leg, from the outer side (from behind) ; 

 X 63. 



3d. Distal pai't of sixth joint, seventh joint, claw and spine below the claw of 

 second left thoracic leg shown in fig. 3b; X 79. s., exceedinglj'^ broad 

 spine inserted at the end of sixth joint on its posterior side, and over- 

 lapping the proximal portion of seventh joint. 



Plate XX. 



Fig. 1. Stenetrium serratum, sp. n. (continued) (p. 323). 



Fig. 1«. Abdomen of an adult female, from above ; X 15. Uropoda wanting. 



Fig. 2. Steiietrium occidentale, sp. n. (p. 324). 



Fig. 2«. Left antennula of an adult male, from above ; X 39. 



2 6. First left thoracic leg of an adult male, from the exterior side (from' 



behind) ; X 39. 

 2 c. First left thoracic leg of an immature male, from the exterior side ; X 39. 

 2 d. First left thoracic leg of an adult female, fi'om the exterior side ; X 39. 

 2 e. Palmar edge and seventh joint with claw of the leg shown in fig. 2 d, from 



the interior side ; X 97. 

 2 f. Alxlomen of an ovigerous female, from above; X 28. 

 2 [f. First pair of pleopoda of an adult male, from in front ; X 51. m., muscle 



to the ramus. 



