Additional Notes on South African Phyllopoda. 19 



secondary tooth not found in the former, and the caudal 

 rami (see fig. 5) are considerably longer, with their outer 

 part drawn out, to a long flexuous thread spinulous at the 

 edges. In all other respects, however, the specimen closely 

 agrees with those formerly examined, so that its specific 

 identity is beyond all doubt. ' 



6. Streptocephalus Dregei, G. O, Sars, n. sp. 



(PI. II, figs. 6—10.) 



Specific Characters. — cf Body of the usual slender 

 form, with the anterior and posterior divisions of about 

 equal length. Tail smooth, with the penultimate segment 

 scarcely longer than the preceding one, last segment short, 

 and obtusely produced between the very oblique insertions 

 of the caudal rami. Frontal lobe short, simple. Prehensile 

 antennæ rather large, basal and median sections of about 

 equal length, terminal section much tumefied, with the outer 

 dactylus broadly laminar at the base, and projecting into 2 

 unequal lappets, having between them a single small tubercle; 

 inner dactylus narrow, bent inwards and transversely truncated 

 at the tip, having at the base a short secondary tooth. 

 Branchial legs with the basal plate coarsely serrate at the 

 edge, terminal lobe of endopodite broadly truncated, with 

 the inner corner divided into coarse teeth, continuing- along 

 its inner edge. Caudal rami of moderate size, not attaining 

 half the length of the tail, narrow, tapering distally, outer 

 edge densely setiferous throughout its whole length, inner 

 edge armed with a dense row of unequal, flattened spines, 

 assuming only in the most proximal part, a setiform appear- 

 ance. Length of body, not including the caudal rami, 16 mm. 



