202 



between dissimilar plates. There was no elevated ridge in 

 front of the genital opening. The ist pair of natatory legs 

 had a two-jointed Re, Re i and 2 uniting into one single joint 

 with concave exterior margin, which carried in its distal end a 

 Se as long as Re 3. The sinus between the Se 2 and Se 3 of 

 the Re 3 of the 2nd pair of legs was larger and deeper than 

 that between Se i and Se 2 of the same joint. The Se of Re 2 

 of the 2nd pair reached to the basis of Se i of Re 3, was much 

 larger than Se i of Re 3, and as long as Se 3 of that joint. 



Lucicutia aurita, C:e, n.sp. 



Diagn. of the Female. Length of the body 8 millim. The 

 head broad, on each side with a short triangular spine. 

 Anterior antennae reach to the end of the furca. St of the ist 

 pair of legs as long as Re 3. St of the 5th pair of legs much 

 shorter than Re 3. Si 2 of the same pair of ordinary form, not 

 thicker than the ether. 



Description of the Female. — Body. Anterior part 4,5, posterior 

 part 3,5 millim. in length. Its form is oblong, only slightly 

 broader in the middle than at the ends, 3^ as long as broad. 

 Head broad in the front, on each side wdth a short but broad 

 spine. Abdomen 4-jointed, its genital segment as long as the 

 two following together, which are of equal length. Anal 

 segment as long as the preceding. Furca as long as the three 

 first abdominal segments together. Se nearly in the middle. 



Antoior antcnnxB reach to the end of the furca, 25-jointed. 

 Length of the joints in o, 005 millim. 



twice as long as broad, with one Si. Re as long as Ri, 

 8-jointed. Re 8 with one plumose Si, inserted at the basis of 

 the 3 terminal ones and much shorter than them. Ri i nearly 

 4 times longer than broad ; its two Si inserted nearer to the 

 distal than the proximal end ; the exterior margin of the joint 

 hairy of stiff, small bristles. Ri 2 + 3, half as long as Ri i ; Le 

 with 5 long plumose S and i Si. Li with 5 long and 3 short S. 

 The Le carries some small bristles. 



Mandible elongate ; B with 3 plumose Si, reaching to Ri. 

 Re somewhat longer than Ri, 3 times longer than broad. Ri, 

 3-jointed ; joints of equal length. Ri i and 3 outside with 

 some small stiff bristles. Re carries 6 plumose S and Ri i four, 

 Ri 3 2 + 8 long plumose S. The masticatory apparatus was not 

 examined. 



