﻿10 



ASHP.URX AND CRAIG. 



Filaria nocturna has four of these papilla? and we have carefully looked 

 for four on this filaria. There is no difficulty in making out three 

 in Filaria pliilippinensis, hut in no instance have we seen four. When 

 the end of the tail is facing the observer it will be seen that the three 

 papilla? are arranged in a triangular manner and are apparently curved 

 inward. (See figs. 12 and 26.) 



In most spicimens an appearance suggestive of two narrow tubes, run- 

 ning in general parallel with the alimentary canal, one on either side, 

 may be seen. These tubes we think probably represent the future gener- 

 ative organs, but we are unwilling to make positive statement either as 

 to their constant presence or their significance. They, or certain masses 

 of cells extend posteriorly to the anus, apparently clear back to the 

 terminal knobs or papilla?, and in at least one specimen their terminations 

 appeared to constitute the papilla?. 



Some of the filaria? from the head and labium are very actively motile; 

 others show no motion, but as these presented no evidence of degeneration 

 we think that they were probably killed by the chloroform used in 

 destroying the mosquitoes. 



The following table gives the principal differential features between 

 the embryos of Filaria pliilippinensis and of other known filaria?, as they 

 occur in the blood of man : 



Name. 



F. pliilippinensis 



sp. nov. 



F. nocturna Man- 

 son. 



F. diurna Man- 

 son. 



F. perstans Man- 

 son. 



F. dcmarquayi 

 Manson. 



F. ozzardi Man- 

 son. 



F. magalhaesi R. 

 Blanchard. 



F. volvulus Lcuc- 

 kart. 



F. tanaguchii 

 Tan. 



F. ? ( Tanaguchii) 



F. gigas Prout 



Length. 



mm. 

 0.32 



0.30 

 0.30 

 0.20 

 0.20 

 0.21 

 0.33 

 0.30 



Breadth. 



mm. 

 0. 0065 



0. 0075 



0. 0075 



0.0045 



0.005 



0.0051 



0.005 



0.005 



0. 295 0. 007 



0.164 0.008 

 Much linger and 

 thicker than 

 any of the 

 above. 



Sheath. 



Head. 



Present, 

 tight. 



Present, 



loose. 

 do — 



Absent ___ 



do.... 



do___ _ 



do— _ 



do — 



do_ 



Present... 

 Absent _„ 



Serrated retrac- 

 tile band and 

 spicule. 



Six lips 



do 



Retractile fang. 



Spine 



(?) 



Unarmed 



Rounded 



Blunt 



do 



(?) 



Tail. 



Anterior 

 V spot. 



Pointed, abrup- Present, 

 tly attenuat- 

 ed. 



Pointed 



do 



Blunt 



Pointed 



do 



do 



do ' Present. 



do I Absent. 



Do. 

 Do. 

 Do. 

 Do. 

 Absent. 

 Do. 



Conical. 

 Blunt. _. 



Do. 

 (?) 



