neio Crustacea from Devon and Cornwall. 286 



as those of S. ima ; the first four joints are together equal 

 to about twice the entire length of the last four ; first, second, 

 and fourth joints subequal, but the second rather longer than 

 the other two ; third about half the length of the second and. 

 nearl j equal to the last ; the fifth, sixth, and seventh small, 

 as shown in the formula — 



Proportional lengths of the joints . . 20 . 26 . 12 . 20 . 6 . 7 ■ 9 . 14 

 Numbers of the joints 1 2 3 4 5 6 7 8' 



Antennee nearly as in S. ima ; outer ramus small, tri- 

 articulate. 



Second maxillipeds moderately stout ; second joint about 

 twice as long as broad, having a series of minute bristles 

 arranged horizontally on the lateral aspect and near the 

 middle, and with a small but distinct seta on the inner margin 

 and towards the distal end ; terminal claw moderately 

 slender. 



First pair of natatory legs moderately slender; the outer 

 branches reach to about the end of the first joint of the inner, 

 and the exterior spines are slender and elongated ; each of 

 the three joints fringed with minute cilia on the outer margin ; 

 first and second joints with also a number of delicate cilia on 

 the inner margin ; inner branches have the first joint rather 

 longer than the entire length of the second and third, while 

 the end joint is fully twice the length of the middle one. 

 The last pair are somewhat similar to those of S. ima, but 

 the secondary joints are proportionally broader, being about 

 half as broad as long ; there is also a slight difference in the 

 armature. 



Hab. Dredged near Chequer Buoy in the neighbourhood 

 of Plymouth, Aug. 14th, 1903 ; apparently not common. 



The more important differences between the species just 

 described and S. ima, which it resembles, are found in the 

 proportional lengths of the joints of the antennules, the 

 greater proportional length of the outer branches of the first 

 pair of legs, and in the secondary joints of the fifth pair being 

 proportionally broader. 



Stenhelia neglecta, sp. n. 



Description of the female. — This species is moderately 

 slender and about *8 ram. in length. Rostrum moderately 

 elongated and slender. The antennules resemble those of 

 Stenhelia ima in length and number of joints, but the lengths 

 of the joints differ as shown by the formula — 



Proportional lengths of the joints. . 14 . 8 . 6 . 10 . 2 . 4 . 3 . 7 

 Numbers of the joints 1 2 3 4 5 6 7 8' 



