20 BULLETIN 69, UNITED STATES NATIONAL MUSEUM. 



are found in the eggs of sharks and skates. Some of the embryos were hatched 

 under my eyes, and in spite of the greatly different organization of the adult 

 worms, thei]- organization was seen to be throughout identical with that of the 

 embryos of the genuine Tccnius (those of man, dog, cat, etc.), namely, a roundish 

 disk, containing smaller and larger granules, and provided with six little spines, 

 disposed in three pairs, two lateral and one in front. * * * 



The new genus, which we found upon the structural peculiarities mentioned 

 above, we will call Liga, and the species, from its many yellowish-brown dots, 

 punctata. 



A full description of both genus and species, with drawings, will be given on 

 some future occasion. 



In 1858 (1858c, pp. 14, IG, 52) Weinland refers a number of times 

 to the tapeworm from the golden-winged woodpecker, and although 

 he does not use the name Liga ininctata there can be no doubt that he 

 has in mind the species which he described in 1857. Weinland 

 (1858c, p. 52) classes the " Tsenioid from the golden-winged wood- 

 pecker " in the subgenus Dilejns^ genus Hymenolejns^ from which 

 fact inferences may be drawn with regard to certain characters of 

 Liga punctata which were not clearly defined in the earlier paper. 



The following characters are given by Weinland for the genus 

 Hymenolejns : "The outer shell of the Qgg membranaceous; one, 

 rarely two, rows of small booklets on the proboscis. The booklets 

 much less developed than in the Sclerolepidota. Uterus consisting 

 of ball-like blind sacs." In the subgenus Dilepis " the egg has two 

 shells only ; the outer shell is membranaceous, and often bears strange 

 appendages." 



By combining these data with the description given in the earlier 

 paper we find the essential characters of Liga ijuiictata to be as 

 follows : 



Head armed with one or two rows of small booklets. Strobila 

 with many yellowish-brown punctations. Genital pores alternate 

 at or in front of the middle of the segment. Vas deferens * form- 

 ing a mass of coils in the anterior portion of the segment in front 

 of the genital pore. Uterus consisting of a large number of blind 

 sacs, perhaps connected with one another. Eggs with two shells; 

 outer shell membranaceous, with a tubular process at each pole ter- 

 minating in a globular expansion. 



Although from the more modern standpoint, Weinland's account 

 of Liga 'punctata is rather meager, the characters given would seem 

 sufficient to enable the species to be recognized in case it should 

 again be met with, and I believe that there can be no reasonable 

 doubt that certain tapeworms which I have found in the golden- 

 winged woodpecker {Golaptes auratus) belong to the identical 



'^ The large mass of convolute spermatic canals in the anterior part of the 

 segment, which Weinland (1857b) mentions, evidently represents the vas defer- 

 ens, and not, as misinterpreted by Weinland, testicles. 



