404 PROCEEDINGS OF THE NATIONAL MUSEUM vol.94 



Imperial Institute of Tropical Agriculture, St. Augustine, Trinidad 

 (EMcC); F. Plaumann, Nova Teutonia, Brazil; E. C. Van Dyke, 

 California Academy of Sciences; and P. W. Wygodzinsky, Rio de 

 Janeiro, Brazil. The initials enclosed in parentheses following cer- 

 tain names will be used as symbols to give due credit for the source of 

 material. Dr. E. A. Chapin, curator of insects, United States Na- 

 tional Museum, very kindly assisted, during the writer's absence from 

 the country, in seeing this paper through the press. 



KEY TO NEW WORLD FAMILIES OF EMBIOPTERA (MALES) 



1. Mandibles with distinct inner apical dentations 2 



Mandibles without apical dentations Anisembiidae 



2. Wings with either R2+3 or R4+5 forked 3 



Wings with R2+3 and R4+5 simple Oligotomidae 



3. Wings with R2+3 simple and R4+ti forked 4 



Wings with R^^s forked and R^+o simple Teratembiidae 



4. Left cercus without echinulations on inner side 5 



Left cercus with echinulations on inner side — these usually located on an 



inner apical nodule Embiidae 



5. Large sized (15-18 mm.) ; wings with all veins strongly represented, Cuia 



usually multibranched ; abdominal terminalia subsymmetrical and unspe- 



cialized, processes short Clothodidae 



Small sized (5-8 mm.) ; wings with veins (except Ri, R2+3, and Cujb) poorly 

 represented, subobsolete, Cuia simple ; abdominal terminalia highly asymmet- 

 rical and specialized, processes prominent Oligembiidae 



Family CLOTHODIDAE 



Clothodinae Enderlein, 1909, p. 175 (subfamily of Embiidae) ; 1912, p. 21. 

 Clothodidae Tiixyabd, 1937, p. 251.— Davis, 1940e, p. 536 ; 1940f , p. 678 ; 1942, p. 111. 



Type genus. — Clothoda Enderlein. 



Characters and distribution of the single genus. 



Genus CLOTHODA Enderlein 



Clothoda ENDEKIJ3N, 1909, p. 176; 1912, p. 21.— Navas, 1918, p. 109 (tribe Clo- 



thodinos).— Davis, 1939c, p. 373; 1942, p. 111. 

 Antipaluria Ende3vLEIn, 1912, p. 63 (genotype: A. aequtcercata Enderlein). — 



Navas, 191S, p. 106.— Davis, 1939c, pp. 373, 379 (establishes synonymy). 



Males. — Very large, uniformly dark-pigmented. Head large, with 

 eyes relatively small, inflated, facets small, mandibles stout with 

 large, blunt apical dentations, 3 on the left mandible, 2 on the right ; 

 mentum obsolete; antennae 23-segmented (?), brown with terminal 

 5 segments white. Wings dark, with all veins nearly complete to 

 terminus ; cross veins numerous ; E,2+3 simple ; R4+5 forked ; M simple ; 

 CUia simple or with 1 or 2 branches ; anal vein well represented, entire. 

 Hind basitarsi with 2 large sole-bladders. Abdominal terminalia 

 simple, subsymmetrical ; tenth tergite usually cleft medially, hemiter- 



