372 DISCOVERY REPORTS 



First calyptopis. Seven specimens examined (Fig. 21 a-e; Fig. 22a, b). Length range 0-97-1-0 mm. ; 

 average length 0-98 mm. 



The carapace is a long, high and very narrow dome which covers the entire anterior part of the 

 body. There are no denticles on the inferior margin. 



The ocular plates are visible and the median eye is still present. 



The first antennae project forward. The rudiments of an inner ramus can be seen bearing two or 

 three setae. There are five naked terminal setae on the outer ramus. 



0-25 mm 



Fig. 22. Nematoscelis megalops. a, first calyptopis, lateral view ; b, telson. The form of the 

 telson of the succeeding instar is visible through the skin. 



The two rami of the second antennae are carried on a peduncle of two segments. The anterior ramus 

 carries two lateral spines and four setose terminal spines. The second ramus carries six setose terminal 

 spines. 



The mandible is naked, and the first and second maxillae and first thoracic limb are present and 

 setose. 



The abdomen is unsegmented. The telson carries one pair of ventro-lateral, three pairs of postero- 

 lateral, and six terminal spines. 



