412 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



to base of outer. First spine of forefemur at twice its own length from 

 tip of trochanter. Basal half of forefemur gradually thickened to 

 first spine. Armature of forefemur with inner row consisting of 

 short spines and between them longer fine hairs. 



Abdomen without bulbous swelling; hind margins of terga straight, 

 without median warts. Lateral angles of terga very slightly pro- 

 duced. Third to seventh terga with two to four squarish depressions 

 between low median ridge and connexivium. Seventh tergum three- 

 fourths as long as sixth, hind margin slightly convex, not tuberculate 

 (fig. 103). Eighth tergum horizontal, triangular, with conspicuous 

 median ridge. Ninth oblique, strongly convex longitudinally, gradu- 

 ally narrowing to apex, hind margin with V-shaped depression before 

 apex, apical margin with small notch (figs. 64, 121). Hind margins 

 of second to sixth sterna straight. Seventh sternum nearly one and 

 one-third times as long as sixth medianly, hind margin with a broad 

 nearly round, median projection. 



Overall body length 15.0 mm. 



This small species belongs in the group with the posterolateral 

 angles of the terga produced. It can be easily separated from other 

 similar species by the characters mentioned in the key and the pecul- 

 iar shape and position of the eighth and ninth terga. 



Types: Holotype, female, Posadas, Colombia, Biraben collector, 

 November 12, 1948, USNM 63093. 



Ghilianella calymmata, new species 



Figures 56, 94 



Female: Head and thorax brown. Femora each with three yellow- 

 ish annuli on apical half, annuli broader on hind femur. Abdomen 

 yellowish brown, irregularly mottled with blackish or brownish. 



With sparse short appressed silvery or golden pilosity on body, 

 more abundant posteriorly and anteriorly on sides of thoracic segments. 



Head distinctly granulose. Interantennal spine long, slightly 

 decurved. 



Thoracic segments granulate; lengths of segments: 3.9, 5.2, 2.6 mm. 

 Claws of foretarsi, two, the inner short and closely appressed to base 



Figures 48-65. — 48, Ghilianella nanna, female, lateral view of last abdominal segments. 

 49, G. pendula, same. 50, G. clavellata, same. 51, G. varicornis, female, lateral view of 

 apex of abdomen. 52, G. panamana, female, lateral view of last abdominal segments. 

 53, G. bicaudata, female, lateral view of apex of abdomen. 54, G. glabrata, female, lateral 

 view of last abdominal segments. 55, G. galapagensis, same. 56, G. calymmata, same. 

 57, G. cuneata, same. 58, G. approximata, female, lateral view of apex of abdomen. 59, 

 G. monense, female, lateral view of last abdominal segments. 60, G. gibberosa, male, 

 lateral view of seventh sternum, after de Toledo. 61, G. monense, female, hind margin 

 of seventh sternum. 62, G. aracataca, female, lateral view of last abdominal segments. 

 63, G. grapta, same. 64, G. calva, same. 65, G. succinta, same. 



