NO. iry29. 



NOTES ON CALYPTROBOTIIinVM— LINTON. 277 



Considerable variation was noted in anatoniicjd details of the several 

 segments which were exaininiMl, hut the general plan is much like that 

 shown in the segment sketched in tig. 2. The genital cloaca^ are 

 irreoularlv alternate and are on the lateral margin near the middle of 

 the lenotli of the segments. The cirrus lies posterior to the vagina 



Vg. 



% 



od 



^g - 



-^z . 



4* 



.V g 



V d 

 ■ V 



'} m 



a 





c 





>---/- 



^g: 



Fig. 2.— Calyptrobothrium occidentale. Free segment; sketch made from specimen, stained 



AND MOUNTED IN BALSAM. ACTUAL LENGTH 2.5 MM. O, GENITAL CLOACA; C, CIRRUS; n, OVARY; 

 O. d., oviduct; S. r/., SHELL GLAND; t, TESTES; M, UTERUS; !', V.A.GINA; V. cl., VAS DEFERNS; )'. g., VITEL- 

 LINE GLAND. 



and is relatively long and spinose. It was not seen everted in this 

 species, but it appears to agree closely with the same organ in C. mini/s. 

 The testes are globular, numerous, and lie in the anterior half of the 

 segment along a median space equal to rather more than one-third of 

 the breadth of the segment. 



