292 REPORT—1868. 
Eucythere declivis (Norman). Common in deep water, and very fine. 
—— Argus (G. O. Sars). Iam indebted to Mr, Robertson for specimens of 
this species, from off the Isle of Papa Stour, Scalloway. 
Ilyobates Bartonensis (Jones). St. Magnus Bay, in about 50 fathoms, 1867 ; 
very local. 
Loxoconcha impressa (Baird). Tide-marks, and among Laminarie, living, 
Balta and Lerwick. 
tamarindus (Jones) (Cythere levata, Norman), Common in deep water 
down to 100 fathoms. 
guttata (Norman), Common in deep water, especially in St. Magnus 
Bay, muddy ground. 
Xestoleberis aurantia (Baird). Tide-marks, and among Laminarie, Balta, &e. ; 
also dredged. 
depressa, G. O. Sars. Common in deep water, especially abundant in 
St. Magnus Bay, in about 50-60 fathoms. 
Cytherura nigrescens (Baird), Tide-marks, and down to 50 fathoms. 
—— angulata, Brady. ‘‘ Lerwick, Mr. D. Robertson” (G. 8. Brady). 
—— striata, G. O. Sars. 3-60 fathoms, frequent. 
—— lineata, Brady. St. Magnus Bay, 60 fathoms. 
cuneata, Brady. ‘ Lerwick, Mr. D. Robertson” (G. 8. B.). 
—— similis, G. O. Sars. ‘“ Shetland, Mr. D. Robertson” (G. 8. B.). 
—— undata, G. O. Sars. St. Magnus Bay, 30-60 fathoms. 
—— pumila, Brady (MS.). Among Laminariz, Bressay Sound, 1867. Not 
yet described. 
——- producta, Brady. With the last. 
——- cornuta, Brady. ‘Shetland, Mr. D. Robertson” (G. 8. B.). 
——— acuticostata, G. O, Sars. St. Magnus Bay, 50-60 fathoms, common, 
clathrata, G. O. Sars. Ten miles east of Balta, in 73 fathoms, rare. 
cellulosa (Norman). St. Magnus Bay, deep water; also ten miles east 
of Balta, 73 fathoms, and Bressay Sound, 5—7 fathoms. 
— concentrica, C. B. & R. (MS.). Some very small Cytherwre procured 
among Laminaric in 5-7 fathoms, Bressay Sound, are a species which 
will be described from fossil specimens in the forthcoming ‘ Monograph 
of the British Posttertiary Entomostraca,’ by Messrs. Crosskey, Brady, 
and Robertson, to be published by the Paleontographical Society. 
flavescens, Brady (MS8.). One specimen, 20-25 miles N.N.W. of Burra- 
firth Lighthouse, 100-140 fathoms. Not yet described. 
quadrata, u.sp. Carapace viewed laterally subquadrangular, of nearly 
equal height throughout; height more than half length; rounded in 
front, the dorsal arch the more gradually sloped; behind produced to a 
well-developed central process; ventral and dorsal margins straight, 
the former terminating behind in a right angle; surface-sculpture con- 
sisting of pittings more or less circular in shape, arranged for the most 
part in longitudinal rows; a small keel runs parallel with the ventral 
margin, and terminates in front in a triangular ala well pronounced 
but small in size, Length 5 inch. 
C. quadrata comes very near to C. striata, but is shorter and higher, 
the ventral margin quite straight; the ala is more developed, and the 
carapace more tumid. 
St. Magnus Bay; also Plymouth. 
navicula, n.sp. Carapace having dorsal margin perfectly straight in 
the central portion, then sloping both before and behind very obliquely, 
with a well-marked very obtuse angle ; ventral margin also straight, 
the straight portion much longer than that of dorsal margin, with two 
