184 MR. LUBBOCK ON SOME OCEANIC ENTOMOSTRACA 
Sapphirina. 
A. Conspicilla contigua. 
Sapphirina cylindrica, n. s. Maris conspicilla contigua, fronti insita. Antennarum 
posticarum digitus articulo secundo paulo longior. Corpus depressuni, elongatum, 
postice non attenuatuni, 10-articulatum, segmento ultimo parvo, tecto. Lamellae 
caudales oblonga3, segmento penultimo non longiores. Setae lamellaeque caudales 
eadem fere longitudine. 
The peculiar outline of the body distinguishes at once this species from all those 
described by Dana, at the same time most nearly resembling his S. metallina. He does 
not figure nor describe the second pair of antennae in that species ; and I am therefore 
unable to compare them with those of S. cylmdrica, which, as is shown in PI. XXIX. fig. 
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1 t, are somewhat unlike those of its congeners. The branches of the natatory legs are 
all three-jointed. The anterior antennae are short, with only four or perhaps fiv T e 
segments, gradually diminishing in size and length towards the apex. The hairs are 
rather longer than the organ itself. 
Collected April 9, at 6 a.m. S. lat. 0° 40' ; W. long. 0° 20'. 
Pl. XXIX. fig. 13, x 15; fig. 14. antenna of second pair, x 60 5 fig. 15. caudal lamella, x 60. 
Sapphirina nitens, n. s. Conspicilla fere contigua. Digitus antennarum posticarmn 
paulo longior quam articulus secundus, articulis duobus digiti inaequis ; unguiculo 
brevi. Lamellae caudales ovatae, ad apicem rotundata;, prope apicem internum 
dente acuto armatae, setis quatuor, dimidio lamellae brevioribus. 
This species is very nearly allied to S. coruscans of Dana, from which it differs in the 
length of the two-jointed finger, which (without the claw) is rather longer than the 
second segment. The male has five thoracic segments, which diminish in length (and also 
slightly in breadth) from the front backwards. The abdominal segments are also five in 
number, and diminish slightly in size like those of the thorax. They are not so much 
pointed behind as in Dana's figure of S. corusccms. In the female the first abdominal 
segment is short and with the sides truncated ; the second is rounded ; the third, fourth, 
and fifth lunate. The caudal stylets are ovate, about twice as long as broad. There are 
four short setae, and a little spine on the inner apex. The setae are not more than one- 
third as long as the lamella. The lamellae of the male and female seemed to vary a little 
in shape and in the position of the two apical hairs. 
Collected, 8 a.m., April 27, 1858. S. lat. 0° 40' ; W.long. 0° 20'. 
Also November 22, 1858. S. lat. 40° 53' ; E. long. 45° 22'. 
Pl. XXIX. fig. 16 ; fig. 1 7. antenna of second pair, x 60. 
Sapphirina elegans, n. s. Conspicilla contigua. Antennarum posticarum digitus 
articulusque secundus fere aequales, articulis digiti inaequis, unguiculo vix dimidii 
digiti. Cephalothorax 5-articulatus, segmento postico lunato, latere rotundato. 
Abdomen 6-articulatum, articulis tertio quarto quintoque lunatis. Lamellae cauda- 
les ovatae, latitudine plus duplo longiores, apice interno denticulato, setis quatuor 
parvulis. 
