8o 
H. J. VAN CLEAVE 
Explanation of Plate 5. 
Outlines of all figures were drawn from stained mounts in damar with the aid of a 
camera-lucida. Each of the lines indicating relative magnification has the value of 0,05 mm., 
e€XC 
ept those accompanying figures 1 and 5 and these have the value of 0,5 mm, 
Rhadinorhynchus selkirki sp. n. 
1. Young female showing general body form and arrangement of the body spines. 
. 2. Side view of a single body spine from posterior region of spined area. 
3. Profile of a portion of a single longitudinal row of hooks from near the mid region 
of dorsal surface of proboscis. 
g. 4. Profile of hooks from ventral surface of proboscis, individual hooks directly corres- 
ponding in location to those shown in fig. 4. 
Tegorhynchus brevis gen. et sp. n. 
5. Surface view of posterior extremity of gravid female. 
. 6. Profile of hooks from ventral surface of base of proboscis showing the charateristic 
hyaline membrane in which the hooks are embedded. 
. 7. Profile of hooks from near middle of dorsal surface of proboscis. 
. 8. Side view of two spines from near anterior extremity of body proper. 
eg. 9. Surface view of a single body spine showing cuticular elevation produced by the spine. 
