58 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



1904, December 13. — Two strobiles; lengths 60 and 108 mm., 

 maximum breadths 10.5 and 7.5 mm. 



1906, December 8. — ^Two strobiles, 120 and 135 mm. in length, 

 and a fragment 50 mm. in length ; maximum breadth 8 mm. 



1910, January 12. — Two strobiles; length 167 and 113 mm.; 

 maximum breadth in each 6 mm., and thickness 3 mm. The 

 shorter specimen was in two pieces, one, with scolex, 28 mm. 

 in length. 



1910, January 13. — A vial with label of this date contained a 

 fragment, lacking the scolex, length 120 mm., breadth 9 mm. 



1913, February 12. — Two strobiles, 120 and 65 mm. in length; 

 maximum breadth 7 and 6.5 mm., thickness 3 and 3.5 mm. 



1913, February 18. — One strobile, length 110, maximum breadth 

 6, thickness 3 mm. 



1913, April 28. — Two birds examined; lengths of strobiles re- 

 corded, 172, 130, 110, 95, and 40 mm. One of these was 

 probably a fragment. These specimens were combined with 

 others before the generic status had been recognized. 



DIPLOPOSTHE LAEVIS (Bloch, 1782), Jacobi. 1896 



Figures 214-221 



Scolex. — Missing. 



Anterior mature proglottides from nearly as long as broad to 

 about half as long as broad ; ripe proglottides from four to five times 

 as broad as long; lateral margins somewhat rounded, giving a 

 crenulate outline to the strobile. 



Genital pores on each lateral margin at about the middle of the 

 length of the proglottis ; cirri two to each segment, one on each side, 

 stoutish and densely beset with minute spines, which are slender, 

 and nearly straight, only slightly curved at the tip; cirrus-pouch 

 thick-walled, somewhat fusiform. Testes three, relatively small, 

 near together at the posterior end of the proglottis behind the 

 female genitalia. They are limited to the earlier portion of the 

 strobile. The two seminal vesicles are capacious, somewhat tubular, 

 their inner ends near together at the median line at the dorsal 

 border of the ovary. Each communicates with its cirrus-pouch by 

 a short vas deferens. The cirrus-pouches extend antero-mediad from 

 the genital pores. 



The vaginae appear in the whole mounts as thin-walled tubes 

 with somewhat irregular outlines, posterior to the cirrus-pouches. 

 The ovary is profoundly lobed, differing in the number and shape 

 of the lobes in the different proglottides. In general it is somewhat 

 crescent shaped, inclosing the shell-gland, and, in some cases, partly 

 inclosing the vitelline gland. In some of the proglottides the 

 posterior lobes of the ovary are ventral to the vitelline gland. The 



