338 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Serr. 
America, northern South America, and the adjacent islands, 
and that this type does not divide into a multitude of closely 
related species, as has evidently been the opinion of many 
authors. 
Chatham Island, February, 1906, 1 ¢. 
GRYLLIDE 
Four species of crickets are known from the Galapagos 
Islands. One of these is found almost everywhere over the 
American continent and adjacent islands. The other three are 
peculiar to the islands. 
MyYRMECOPHILINE 
25. Cryptoptilum erraticum (Scudder) 
1893. Cycloptilum erraticum Scudder, Bull. Mus. Com. 
ZOO POW. 23) ol. UE nes) 6 ancde/aen iio: -vClvealesmistannce 
Galapagos Islands. ] 
oe 
Fig. 7—Cryptoptilum erraticum (Scudder). Dorsal outline of male 
pronotum. Tagus Cove, Albemarle Island, Galapagos Islands. (X 6%) 
Fig. 8.—Cryptoptilum erraticum (Scudder). Internal outline of caudal 
metatarsus and tibial and metatarsal spurs. Male. Tagus Cove, Albemarle 
Island, Galapagos Islands. (X 20) 
1901. Cycloptilum erraticum McNeill, Proc. Wash. Acad. 
Sci, Mil 505. hd), 2, juv. | Albemarle andiloud islands: 
Galapagos Islands. | 
1901. Cycloptilum lepismoide McNeill, Proc. Wash. Acad. 
Sci., III, p. 505. (In part.) [2 ; Abingdon Island, Galapagos 
Islands. | 
