1895.] Zoology. 53 
At first the gland consists of a single layer of round embryonic cells 
but it later becomes differentiated into two cell layers, the one of 
large capsular cells, the other of smaller triangular cells which lie be- 
tween the apices of the others. Nothing new is given regarding the 
phylogeny of the organ. 
The Species of Bothriocephalus.—From a recent article by 
R. Blanchard’ the following key may be compiled as an index to the 
species of the collective genus Bothriocephalus : 
1 Genital organs single : : : ; ; 2 
Genital organs double P š 4 
2 Genital openings lateral (marginal), Bothriotenia Railliet, 1894. 
Genital openings ventral or. dorsal, 3 
Penis, vulva and uterus open ventro- 
34 median, Bothriocephalus Bremser, 1819. 
Penis and vulva ventro-median ; uterus 
| opens dorso-median, Ptychobothrium Lönnberg, 1889. 
Penis and vulva ventral; uterus open 
Penis, vulva an uterus open ventrally, Krabbea R.Bl., 1894. 
dorsally, : Diokoo pita Lönnberg, 1892. 
Bothriotænia, type species B. “longicolli (Molin), contains besides 
the type species, B. fragilis, B. infundibuliformis, B. rugosus and B. 
suecicus. 
Bothriocephalus (type B. latus) contains B. latus, B. cordatus and B. 
cristatus found in man; a large number of species found in mammals, 
birds, reptiles and fishes. 
Ptychobothrium contains Pt. belonis, claviceps and punctatus found _ 
in fishes. 
Krabbea is founded upon a large 10 m. tapeworm recently found 
by Ijima and Kurimoto (Journ. Coll. Sc., Tokyo, 1894, IV, pp 
371-385, Pl. XVIII) and contains besides this type Kr. fasciata, Kr. 
variabilis and probably Bothriocephalus tetrapterus and B. antarcticus. 
Diplogonoporus Lönnberg, 1892 (=-Amphitretus R.Bl., 1894) con- 
tains A. wagneri (Monticelli) and A. lonehinobothrins (Monticelli). 
—C. W. Srites, Washington, D. C. 
Batrachia of Vincennes, Indiana.—The following list of the 
Urodela found in the vicinity of Vincennes, Ind., includes only such 
2Notices sur les Parasites de- VY Homme : iv, Sur le Krabbea grandis, et l 
markes sur la classification des Bothriocéphalinés ; Compt. rend. Soc. Biol, 1804, 
ae i ASASTA 
