BY E. J. GODDARD. 729 



these papillose structures are very marked, giving the surfaces, 

 especially the dorsal, a very marked rugose character. The 

 colouratioa differs from that in the other species. In the 

 preserved state the ground-colour is light yellowish-brown. On 

 the dorsal surface are two irregularly outlined dark pigment- 

 bands, one on either side of a median clear area, extending from 

 the level of the fourth pair of eyes as far back as the posterior 

 extremity, with slight interruptions at intervals in the posterior 

 thiid of the body. On the ventral surface are present three 

 straight dark bands, one median and one at either margin of the 

 ventral surface, the former extending practically from the posterior 

 lip of the oral sucker to the posterior extremity, the latter along 

 the posterior two-thirds of the body. 



The oral sucker is composed by annuli 1, 2, 3, and 4 partly. 



The loiter lip is composed by annuli 4, 5, 6, and 7, if one notes 

 the incomplete annuli on the ventral surface, but really by 

 annuli 4 and 5, the latter composition agreeing with other species 

 of Geohddla. 



GenitM Apertures — The apertures cannot be made out in the 

 single specimen, owing to the manner in which the ventral sur- 

 face is buckledj due to contraction. 



Annidi. — As in the other species of Geohdella, the annuli are 

 95 in number. On the dorsal surface, the first complete annulus 

 is the fifth(5th), just behind that bearing the fourth pair of eyes, 

 inasmuch as it is the most anterior annulus running to the margin. 

 Annuli 2, 3, 4 are readily made out between the eyes, but can be 

 only faintly made out laterally to the eyes, this being due merely 

 to the fact that the tubercular nature of the rugose surface makes 

 the limits of the annuli fairly readily visible, although marked 

 lines of division cannot be made out so plainly as in the case of 

 succeeding annuli. 



On the ventral surface the first complete annulus is the eighth 

 (8th). Annuli 4, 5, 6, and 7 become more and more developed 

 as one passes backwards, so that 7 is more nearly complete than 

 those lying anterior to it. 



Somites. — The unabbreviated somite consists of five(5) annuli, 

 a number which is apparently constant in the genus. 

 74 



