1918 | The Fifth Indian Science Congress. cli 
(1) That ogee Esra is @ more common phenomenon than ex- 
vidual Ps tos rg and that the two are not neces- 
(2) That in very few instances is it possible uae any advantage 
that the race can have gained by its plastici 
(3) That the oe forces, ~ the causes of shainielte: of greatest 
— 
apparently slight ditumnain in environment are sometimes of 
r practical momerft than changes which seem to ope much 
A primitive eel from the Southern Shan States.—By N. 
ANNA E. 
a e 
supported by two sobre twee bones; the ethmoid and the vomer are distinct, 
prs frontals | polars , teeth are entirely absent from the roof of the mouth ; 
scales are present in i The 
ones are relatively large and provided with abundant yolk. The largest 
specimen, which is fully adult, is only a little a than two inches long. 
us 
nchely 
Species is not allied, this eel is the only sya ye of the order Apodes 
in which the tail-fin and hypural bonies are developed. 
Review of progress in our knowledge of aise cheliig 
during the last two decades.—By E. Brunert 
A brief review of recent work on the Diptera of the oriental region. 
Notes on the large Indian — worm (Lamprophorus 
nebrosus, Walker).—By C. Pat 
full description of the larva, pupa and adult female is given. 
ihe toting habits, method of cleaning = body sey — Ses of 
burrows as a preliminary to ecdysis are d _—_ 
escribed i 
osity of the eggs is also noted and facts easing on aiat of the larva 
adult recorded. 
On the anatomy and life-history of Rhynchobothrius ilisha, 
Nn. To 
sp., 1 the intestines of - shark, Carcharinus 
gangeticus eter and Henle).—By T. SouTHWELL and 
Baint Pras 
In this paper the authors describe a new tapeworm of the genus 
Rhynchobothriue found in the large jeiautine of a sh archart 
nus 
ticus (Mull, & Henle). A full account of the structure both of the 
tap is given. 
tval stage of this tapeworm (which occurs ina em sate 
The adult tapeworm develops from these cysts on the 
othe hak being dev ested Be the shark and is found in intestine 
shar 
t Various intermediate stages between the larval stage and the adult 
@peworm w n were fo saps in the intestine of the — of Hikes, 
of the cystic sige in muscles iin ae 
considerable tebe and the possibilities “ot human infec 
