798 REPORT OF THE HARVARD AFRICAN EXPEDITION 
ARACHNOIDEA 
LINGUATULIDA 
LINGUATULIDAE 
I have in my collection a number of African specimens of this interesting 
family of parasites, the correct affinities of which are still open to discussion. 
Thus far I have been unable to have them identified. I believe, nevertheless, 
that the records of the hosts may be of some value. 
1. Two adult parasites from the lung of a snake, Naja melanoleuca Hal- 
lowell. Bumba, Belgian Congo, January 3, 1927 (J. Bequaert). 
2. One adult parasite from the lung of a snake, Python sebae (Gmelin). 
Ruchuru, Belgian Congo, February 21, 1927 (J. Bequaert). 
3. Three adult parasites from the lung of a snake, Bitis nasicornis (Shaw). 
Memmeh Town, Liberia, August 29, 1926 (J. Bequaert). 
4. Adult parasites from the pancreas of a genet, Genetta stuhlmanni Mats- 
chie. Mt. Lutundi, Usambara Mountains, Tanganyika Territory, December 
11, 1926 (Arthur Loveridge). 
5. Two adult parasites from the liver of a leopard, Felis pardus Linnaeus. 
Ruchuru Plains, Belgian Congo, February 17, 1927 (R. P. Strong). 
6. One adult parasite from the mesentery of an aardvark, Orycteropus afer 
(Pallas). Faradje, Belgian Congo, January 12, 1909 (H. Lang and J. P. Chapin). 
RICINULEI 
RICINOIDIDAE 
(Cryptostemmatidae) 
Ricinoides plebejus (Hansen and Sorensen) 
Cryptostemma plebeyum Hansen and Sorensen, 1904, ‘On Two Orders of Arachnida,’ p. 148, Pl. VII, 
figs. 2a-f ((mmature ¢@; near the town of Togo, Dahomey). 
Ricinoides plebeyum Ewing, 1929, Ann. Ent. Soc. America, XXII, p. 597. 
LrBeRiA. — Paiata, three females, under decaying leaves partly embedded 
in mud, in very low, swampy forest, near the banks of the St. Paul’s River, 
October 1926. 
These remarkable arachnids, which Mr. Nathan Banks very kindly 
identified for me, are true living fossils. The order Ricinulei comprises two 
living and two extinct genera. The fossil genera, Curculioides Buckland (origi- 
nally described as a beetle) and Polyochera Scudder, are strictly Palaeozoic, 
being both represented by a few species in the Carboniferous of England and 
North America (Illinois). The few living forms have a peculiarly restricted 
distribution in the tropics. In America, the genus Cryptocellus Westwood, 
with six species, is known from Guatemala, Costa Rica, Colombia, and the 
Amazon Basin. In Africa, the genus Ricinoides Ewing (Cryptostemma Guérin), 
