318 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Ser. 
San Tomas, Albemarle Island, 1200 feet, September, 1906, 
1, and Cormorant Bay, Charles Island, October, 1905, 1 
juv. 3. 
This genus and species is of particular interest, due to the 
fact that though a member of Giglio-Tos’ eighth subfamily, the 
Parathespine, it is aberrant in certain features showing some 
divergence toward the eleventh subfamily, Oligonicine, of 
Giglio-Tos. The reduction in the number of cephalic tibial 
spines and decided production of the juxta-ocular portions of 
the vertex are the features of particular interest. Though the 
cephalic tibiz bear no dorsal spines, as characteristic of the 
Oligonicinz, Galapagia bears to Oligonyx a decidedly close 
general superficial resemblance, as well as showing the features 
mentioned above. 
We figure the cephalic tibia and head, as these portions are 
poorly represented in the figures given by Scudder. We would 
note that the limb armament is as follows in the present ma- 
terial. Cephalic femur with four discoidal and four not very 
elongate spines on the ventro-external margin, ventro-internal 
margin armed with eight spines, rl1l11I, of which the first two 
large spines are obliquely placed. A minute genicular spine is 
found on but one of the internal genicular lobes of the cephalic 
femora in the adult male, but an indication of such spination is 
shown on all of these portions in the immature example. The 
cephalic tibia has the ventro-external margin armed with two 
large spines, placed distad; the ventro-internal margin with 
two minute spinule proximad and three large spines distad. 
The unguicular sulcus of the cephalic femora is suffused and 
very dark. 
Fig. 2.—Galapagia solitaria Scudder. Cephalic aspect of head. Male. 
San Tomas, Albemarle Island, Galapagos Islands. (X 6) 
Fig. 3.—Galapagia solitaria Scudder. Internal aspect of cephalic tibia. 
Male. San Tomas, Albemarle Island, Galapagos Islands. (X 13) 
