76 



with the Madras Troops, iVom these specimens I derive the 

 following conclusions. 



The camel bot is half as big again as that of the horse, is 

 much softer and more tapering towards the hookless extremity, 

 whereas it is blunter and much more compressed towards the 

 hooked end; while the section of the horse bot is evenly oval, 

 that of the camel bob is flattened on the lower surface. In both, 

 the body-rings hearing spines are nine in number and the spines 

 point from the hook end. The following contrasted lisl of 

 characters may best be given in the tabulated form : — 

 Horse Bot. Ca3ii:l Bot. 



Spines. — Small, haixl, sharp, verj' Spines. — Fleshy and in smglc row, 

 numerous on each ring, and largest very large, teafc-like, and blunt. The 

 on the central rings. Small extra largest are in the central rings but 

 spines alternate with the main ones not markedly so. The main spines 

 and are situated behind and in the vary in size and tend to collect into 

 iutei'vals between them, forming as groups with spaces between them, 

 it were, two rows in each cii'clc. Those on the lateral pai'ts ot" the 

 The bulging parts between the rings lower surface tend to develop into 

 are smooth. temporary feet. On the most project- 



ing parts of the segments between 

 the rings of spines are small spine- 

 lets which below are veiy numerous 

 and form continuous bands. In the 

 different parts of the body the teat- 

 like spines vary in relative position. 

 Hooked-end. — Hooks brownish- irooZ;erf-enf?.-Hooks black, diverge at 

 black and sharply divergent, short an acute angle and are slender, long, 

 and much curved, situated inferiorly and little curved, situated below the 

 near the extremity of, a long narroAv anterior extremity and beneath a 

 hook-end. A central organ of chi- 6-lobed mass surrounded above and 

 tine is midway between the bases of on each side by irregular circlets of 

 the hooks, and there are a few spine- spmelets which communicate at each 

 lets above and on either side of two extremity with the first zone of hook- 

 well marked sense organs (situated lets above and below. This first 

 above the hooks). These sense or- zone is a very irregular one. There 



gans are all but sessile. 

 row of spines is complete. 



The first is no chitinous organ between the 

 hooks. The pigmented sense organs 

 are on long peduncles the bases of 

 which ai-e connected by a band. 

 There is another transverse band 



