PLATANISTA. 



427 



TABLE I. 



Table of external measurements, Sfc, of a few Platanistm of different ages and of loth sexes. 





No. I of 











No. VII 









other 











of other 









Tables 











Tables 









? 



? 



?^ 



9 



5 .iuv. 



6 



5 juv. 



ri J. ^ 





2nd March 



Having' 



23rd June 



22nd July 



12thApril 



19th July 



24th Feb- 



Jc C6lu9 



6. 





1872. 



the fcBtus 



1867. 



1867. 



1872. 



1866. 



niary 1869. 



Tip of snout to notch of tail, in a straight line 



99-12 



93-75 



89-00 



82-25 



59-00 



83-30 



56-00 



27-75 



„ „ over the curve of hack and dorsal fin 



101-50 



99-75 







61-25 









„ „ to tip of dorsal fin, in a straight line . 





62-25 





... 



38 00 





36-50 





„ „ „ following curve of back 



... 



64-00 



... 





... 



... 





18-25 



„ „ to base of pectoral flipper in a straight 



















line ...... 



35-75 



33-00 



... 



... 



21-00 



27-50 



20-65 



8-50 



„ „ to anterior margin of blow-hole, in 



















straight line ..... 



19-75 



17-75 



17-50 



16-65 



12-50 



12-75 





4-37 



„ „ to anterior margin of blow-hole, over 



















curve ...... 



21-12 









13-25 







... 



Blow-hole to highest point of dorsal ridge . 



42-00 





38-50 



3370 









... 



Tip of dorsal ridge to median notch of tail . 







30-25 



28-40 





31-60 







„ snout to umbilicus ...... 



... 



45-50 







29-00 



37-12 





11-50 



Umbilicus to auterior margin of genital orifice . 





16-75 







8-00 





... 



0-22 



Head — 



















Tip of snout to angle of mouth, in a straight line 



2012 



18-75 



14-25 



16-75 



12-62 



13-50 



8-00 



4-25 



Angle of mouth to eye 



2-36 



2-00 



... 





1-50 



2-00 



1-50 



0-80 



ear 



7-00 









3-80 



635 







„ „ shoulder ..... 





... 



15-'25 













„ „ pectoral flipper .... 









12-25 





14-00 







Eye to ear 



6-25 



613 



5-50 



5-22 



3-65 



6-12 



'3-75 



1-81 



„ front of blow-hole ...... 







6-75 







6-60 







• Length of blow-hole ...... 



2-50 



3-30 



2-75 





2-'25 



2-25 



2' 12 



6-90 



„ „ external ear . . 











1-67 









Diameter of „ 



... 



0-25 











o'-15 



0-12 



Longitudinal diameter of eye, external ocular orifice . 





0-22 













0-15 



0-02 



Vertical diameter of eye, external ocular orifice 



6-13 



0-10 



... 













0-02 



Tip of upper jaw to eye ...... 







... 









12-25 



... 





Posterior margin of bl6w-hole to ear .... 









... 







7-85 



... 





Transverse breadth of gape ..... 



4-25 





... 











... 





Tip of lower jaw to last tooth ..... 



17-75 







15-25 









... 



... 



Girths — 



















Round the head at the blow-hole .... 





29-00 



28-25 



26-50 





24-00 



25-50 



11-12 



At the neck, viz., halfway between blow-hole and 



















pectoral limb 



44-75 



42-75 



36-50 



... 



22-50 



34-85 





13-62 



At the umbilicus ....... 



57-62 



53-00 





... 



25-85 







14-00 



At the posterior margin of the generative orifice 





35-25 









36-15 



30-20 





At the root of the tail 



14-50 



13-00 







7-80 



11-35 





3-37 



Limb— 



















Length along the anterior border of the pectoral flipper 



17-00 



16-50 



12-50 



13-25 



10-50 



14-50 



9-85 



3-62 



- „ „ posterior „ „ „ 



10-75 



9-50 



8-75 



8-50 



6-85 



9-12 



6-40 



2-50 



„ „ free margin of the same 



11-50 



8-92 





7-40 



5-25 



7-75 



5-12 



1-75 



Breadth, at its base 



3-50 











2-80 







Girth „ „ 



8-85 



8-25 





6-12 



5-08 





4-36 



2-50 



Distance between the flippers at their base, round 



















the under surface 



... 





9-00 





... 





... 





DOESAL FIN— 



















Length 



14-00 



12-00 



.. . 



7-75 



5-00 



7-80 





2-75 



Depth or height 



2-50 



1-90 



... 



... 





... 



... 



0-50 



Tail— 



















Length of the external margin of the caudal flipper 



19-38 



18-00 





13-00 



12-25 



16-80 



... 



4-50 



„ „ internal „ „ „ . . 



15-75 



13-00 





9-00 



7-86 



11-75 





2-45 



Tip to tip of caudal flipper ..... 



26-00 





19-'25 



14-50 



13-00 



19-12 







Depth of the „ notch 



1-75 



6-95 













0-30 



Transverse diameter of tail midway between base and 



















tip of fiipper ....... 





9-20 









8-05 





1-87 



Genitalia — 



















Extreme length of genital oriflce .... 



5-85 



4-25 









4-00 



1-86 





Length of each mammary slit . . . 



1-00 



0-75 







0-33 









Distance of mammary slits from genital orifice , 





1-35 















„ anus from posterior end of genital oriflce . 









... 



... 



17-12 



10-65 



3-00 



Viscera— 



















Length of small intestine 



... 



348-00 













85-50 



large „ 





38-50 













8-00 



„ csecal appendage 





4-50 





... 





... 





1-00 



1 AVith this exception all the other specimens of this Table were captured in the Hughli. It is the dolphin procured by Mr. Clay C.S., in the 

 Bansi branch of the Ganges, near Dacca. 



