Sludit's oil iiiariiii! Oslracods 523 



Asterope oculata G. S. Brady. 



Asterope oculata (part.), (-t. 8. BitADY, 19U2 a, p. 17!). pi. XXL figs. 6—13. 



Description: — Male: — 



Shell: — Length, 1,35 — 1,38 mm.; length : height abuut 1,78:1. Seen from 

 t he side (fig. 1) it is of about the same type as the shell of the male of A. Grimaldi, although, 

 as will be seen from the figures given above, it is not inconsiderably higher relatively. Seen 

 from below (fig. 2) it is also of about the same type as in the species mentioned. The wreath 

 of hair round the posterior part of the shell is rather dense. Seen from inside: Medial 

 bristles: There are a few bristles in the incisur, all scattered. About parallel to and somewhat 

 inside the posterior margin of the shell there is a rather sparse but distinct row of stiff, moderately 

 long bristles; this row of bristles, which becomes more and more sparse dorsally, extends all 

 along the spine-bearing list (fig. 3). This list is gently undulated and has about 25 — 28 hyaline 

 spines and numerous short bristles of somewhat different lengths, from to about 7 bristles to each 

 hyaline spine, somewhat fewer ventrally than they are dorsally. No broad or fine pores could 

 be observed on the part between the spine-bearing list and the posterior margin of the shell. 



First antenna: — This is very like this limb in A. Grimaldi. We must note: 

 The longer of the two posterior distal bristles on the fourth joint is about as long as or rather 

 slightly shorter than the total length of the three distal joints. The c- and f-bristles are subequal; 

 they measured about 2,2 — 2,3 mm. in length, i. o. the same relative length as in the species 

 mentioned above; the c-bristle has 25 — 26, the f-bristle 24 sensorial filaments. 



Second antenna: — This is very like the corresponding limb in A. Grimaldi. 

 A short bristle is developed on the protopodite distally medially close to the exopodite. 

 Endopodite: The second joint has no verruciform swelling close to the three bristles. The 

 end joint is undulated on the outside (the ventral side) just distally of the proximal bristle in 

 about the same way as is shown in G. S. Brady's drawing. Both the specimens investigated by me 

 had this undulation; G. S. Brady in his original description, p. 180, states, however, that this 

 character is not constant. The proximal bristle on this joint is longer than is shown in G. S. Brad Y''s 

 drawing; I was unable to decide how long, as it was broken in both the specimens investigated. 



Mandible: — Protopodite: Coxale: The scythe-shaped process (fig. 4) : 

 The part distally of the main spine grows evenly and rapidly narrower to a fine point; its ventral 

 edge is straight or slightly concave with a distinct corner near the main spine; this corner is 

 not always, however, so sharp as in the adjoining figure. The distance from the point of the process 

 to the main spine is very much less than the distance from the latter to the proximal ventral 

 spine. The dorsal bristle is fixed somewhat nearer the main spine than the point of the process 

 or is about ecj^uidistant from both and is fixed slightly distally of the main spine. The dorsal 

 serrate teeth are rather weak. The main spine is also rather weak and has a weakly developed 

 ridge of hairs. There are four rathei' ])Owerfnl ventral spines and in addition three or four 

 weaker ones, one between the third and fourth spines and three distally of the fourth. On 



