ORTHOPTERA 



495 



deep fuscous. The specimens from Indefatigable are so different in 

 size and color that they deserve to rank as a distinct subspecies. The 

 adults are very light testaceous with the cross-veins of the tegmina 

 not at all infuscated. Both forms have a very marked depression on 

 the inner side of the anterior femora for the reception of the tibial 

 spur, and beyond this impression three large spines. The Albemarle 

 form, which maybe called typicalis^ has distad to this impression four 

 spines on the outer and eight on the inner side; the Indefatigable form, 

 which may be called ?najor^ has five and ten spines respectively. 



Length of body, typicalls^ 40 mm., ?najor^ 41 mm. ; tegmina, 

 typicalis^ 25 mm., fnaj'or, 28 mm. ; hind femora, typicalis^ 12.5 mm., 

 major ^ 18 mm. 



Albemarle, i male, 2 females, 4 nymphs; Indefatigable (South 

 Seymour Island), 2 males, i female; Hood, i nymph. 



ACRIDIDiE. 



If^we exclude the doubtful Va^es and Gry/lus, the only two indige- 

 nous species previously described from the Galapagos which are not 

 found in the present collection belong to the family Acrididae. These 

 species are Closteridea bauri Scudd., a truxalid, and Desmopleura 

 concinna Scudd. , an acridid. The four other previously known species 

 were collected in large numbers and Mr. Snodgrass has prepared a 

 paper dealing with their variations and distribution. 



Subfamily (EDIPODIN^. 

 SPHINGONOTUS FUSCO-IRRORATUS Stal. 



Numerous specimens from six islands, viz. : Charles, 11 males, 28 

 females; Albemarle, 4 males, 9 females; Barrington, i male, 8 

 females; Hood, 3 males, 7 females; Chatham, 4 males, 14 females; 

 Indefatigable, 13 males, 31 females. 



Subfamily ACRIDINiE. 

 SCHISTOCERCA MELANOCERA Stil. 



Represented by numerous specimens which, as Mr. Snodgrass has 

 shown, are separated into distinct races which generally but not always 

 have their range limited by the geographical division of an island. 



Specimens were collected on Charles, Albemarle, Barrington, In- 

 defatigable (South Seymour), James, Narboro, Duncan, Abingdon, 

 and Bindloe. 



