1904.1 



ASELLOTA-GROUP OF CRUSTACEANS. 



317 



4. S. haswellii Bedd. 



b. First thoracic legs witli the upper distal 



corner of fifth joint produced into a long 



process. 



(t. Iksal joint of antennuhe, seen from above, 



anteriorlj' at the outer side produced into 



a long process reaching considerably 



beyond the distal margin of second joint. 3. »S'. mediterraneum, sp. n. 

 jd. Basal joint of antenuulse, seen from above, 

 without any real process, but at the outer 

 distal angle with a conspicuous sharp 

 tooth, well marked off from the oblique 

 front margin by an indentation, and far 

 from reaching to the distal end of second 

 joint 



B. Basal joint of anteunulas, seen from above, 

 with the exterior half of the distal margin 

 transverse, outer angle at most rectangular 

 and acute, but without process or tooth. 

 a. Lateral corner of the head, seen from above, 

 produced into an acute process. Eyes 

 rather large, oblong. 

 a. Abdominal shield on each lateral margin 

 with about five sharp teeth. First tho- 

 racic legs with the upper distal angle of 



fifth joint produced into a long process... 5. -S. serratum, sp. n. 



/3. Abdominal shield on each lateral margin 



with only the tooth at the notch. First 



thoracic legs with the upper distal angle 



of fifth joint rectangular, without process. 



+ In the male the lower margin of the hand 



has its proximal half concave, and at 



the distal end a low broad process with 



three ai- four teeth nearly equal in size 



placed in a convex line. In the female 



the angle between the palmar and the 



lower margin of the hand measures 



about 110° ; the hand is a little mere 



than # as long as deep 6. S. occidentale, sp. n. 



ft In the male the lower margin of the 

 hand has its proximal half convex, 

 and at the distal end two processes 

 separated by a rather deep incision ; 

 each process terminates in two teeth. 

 In the female the angle between the 

 palmar and the lower margin of the 

 hand measures about 125°; the hand 



is twice as long as deep* 7. S. stehbingii, H. Richardson. 



ttt 1« the male the lower margin of the 

 hand has its proximal half convex, and 

 at the distal end a narrow, moderately 

 long process, with the end bifurcate, 

 and sometimes besides a feeble tooth 

 on its proximal margin. In the female 

 the angle between the palmar and 

 the lower margin of the hand mea- 

 sures less than 100°, and the hand is 



a little more than f as long as deep ... 8. ,S'. antillense, sp. n. 

 h. Lateral corner of the head, seen from above, 

 without any process. Eyes small, sub- 

 circular 9. S. s/awense, sp. n. 



* All these characters have been derived .from the figures given by Miss Harriet 

 Richardson. 



