812 
FISHES OF INDIA. 
Raja rhinohatus, Gronov. ed. Gray, p. 10. 
Rhinobatus {SyrrJiina) polyophthalmus, Bleeker, Japan, p. 129. 
Snout rather elongated : the distance between the outer angles of the nostrils equals 
two-fifths of the extent preoral portion of the snout. Anterior nasal valve is con- 
nected to a fold of skin passing towards the median line and so nearly joins that of the 
opposite side. The upper vortral ridges are convergent in front. Back finely granular 
with a medium row of small tubercles. Colours — brown, young examples have a 
white snout. 
Sabitat. — Mediterranean and the Indian and Atlantic Oceans. 
Page 745. Erase Genus Ceratoptera. 
Ceratoptera elirenbergii. 
The figure must, I think, refer to an abnormal condition of Astrape dipterygia, as I find 
such a form of monstrosity more common among European rays and skates than I had 
formerly reason for supposing. 
Page 729. Add 
Sub-Class— LEPTOCARDII. 
Skeleton semicartilaginous and notochordal : destitute of jaws or ribs. Brain absent. Blood colourless 
and distributed by pulsating sinuses. Respiratory and abdominal cavities confluent: numerous branchial 
clefts and the water discharged by an opening in front of the vent. 
Family I.— CIREOSTOMI. 
An elongated compressed body, having a low and rayless dorsal fin, continued round the tail past the 
vent to the respiratory opening. Mouth a longitudinal slit on the inferior surface, and with cirri. Eyes 
rudimentary. Vent near the end of the tail. 
Genus 1 — Branchiostoma, Costa. 
Amphioxus, Tarrell. 
Definition as m the family . 
One or more species of this genus are common around the waters of India, Burma, 
Ceylon, and the Andaman Islands. 
