CRtMUl \ M.M.ACOSTRACA. III. 



25* 



Fig. sc. Second left thoracic leg of the same female, from behind; ' 37. 



5 f . Seventh right thoracic leg of the same female, from in front; x 37. 

 5g. Posterior part of abdomen with nropods of a female, from below; x 37. 



Fig. 6. Dfsmosoniti plcbfjum n. sp. 

 Fig. 6 a. Female with marsnpium, from above; x 33. 



6b. First right thoracic leg of a female, from behind; >: 80. 



6c. Major part of seventh right thoracic leg of the same female, from in front; x 78. 

 6d. End of abdomen with uropods of a female, from below; x 78. 



Fig. 7. llyarachna Air/icffts G. O. Sars. 



Fig. 7.1. Proximal parts of antennulae and of right antenna of a female with marsiipimn from I,at. 

 63i5' N., Long. 2323' W., from above; x 23. sy. squama (cxopod). 



Fig. 8. llyarachna bicornis n. sp. 



Fig. 8 a. Anterior major part of the body of a female without marsiipinin, from alxne; x '/ 



8 b. Right antennnla and proximal part of right antenna of the same specimen, from above; j-~ 25. 

 8 c. Distal major part of seventh right leg, from behind ; x *$/* 



Fig. 9. llyarachna dubia n. sp. 

 Fig. 93. Body of an immature female, 3-8 mm. long, from above; x */,. 



<il>. Antennnlae and proximal part of right antenna of the same specimen from above; ^ 34. 

 Distal major part of seventh left leg, from in front; x 24. 



Fig. 10. llyarachna sfinosisstma n. sp. 



Fig. 10 a. Male, from above; scarcely x 14. 



lob. Proximal parts of left antennula and antenna of the same male, from at>ove; x 28. 



10 c Distal part of left mandible, from below ; x 39. 



lod. Distal major part of second left leg, from behind; scarcely x 15. 

 ice. Fifth left leg, from in front; scarcely x 15. 



Plate XIL 

 Fig. i. llyarachna sfitiosissima n. sp. (continued). 



Fig. i a. Left maxilliped, from below ; x 34. 



i b. Abdomen and the two posterior thoracic segments of the male shown on the preceding plate, 



from above; x 21. 



1 c Left uropod of a female, from below; x 53. 



Fig. 2. Echinozone arclica n. sp. 



Fig. 2 a. Male, from above; x 21. 



2 b. Antennula: and proximal part of right antenna, from above; x 85. 



2C Left uropod, from below; x 132. ex. exopod. 



