NO. 2242. MORPHOLOGY OF THE STREPSIPTERA—PIERCE. 467 



Dacyrtocara Pierce, 2 species; Georgia. 

 Fentozocera Pierce, 4 species; Queensland, Guatemala. 

 Cyrtocaraxenos Pierce, 1 species; Java. 

 Delphacixenos Pierce, 1 species; Russia. 

 Stenocrano'philus Pierce, 1 species; Porto Rico. 

 Agalliaj)hagus Pierce, 2 species; Ohio, Maryland. 

 Colacina Westwood, 1, species; Borneo. 

 Megalechthrus Perkins, 1 species; Queensland. 



Errata : Bull. 66, pi. 14, read " males " for " females." Gen. Insect, p. 39, 



line 19, change " Prothorax bank-like " to read " Protliorax band-like." 



Tahle of genera. 



1. Males known 1. 



Males unknown 13, 



2. Prothorax bandlike, not pushed forward into head ; wings with 7 primary 



veins, and 2 distal detached veins between radius and medius 8. 



Prothorax pushed forward into head ; wings with 6 or 7 primary veins, and 

 2 distal detached veins between radius and medius 5. 



3. Median vein broken, or with detached vein commencing just before its apex 



on the anal side ; metathoracic praescutum and scuti very long, scutellum 



much shorter 28. Halictophagus Dale. 



Median vein not broken or with detached piece on its anal side; meta- 

 thoracic praescutum and scuti only moderately long, scutellum more than 

 half as long as praescutum 4. 



4. Mandibles and maxillae arising closer to the eyes than the length of the 



basal joint of maxillae; oedeagus slender, basally arcuate, apically 

 acutely barbed, the outside angle between the outer edges of the hook 



and the main tube being very acute 29. Tettigoxenos Jeannel. 



Mandibles and maxillae arising at a distance from the eyes at least equal 

 to the length of the basal joint of the maxillae; oedeagus stout, si- 

 phonate, greatly inflated at middle, outside angle little less than a right 

 angle 30. Pyrilloxenos Pierce. 



5. Prothorax arched forward into head 6. 



Prothorax so deeply embedded in head that the pleurae can not be seen 8. 



6. Wings with 7 primary veins ; head transverse, not greatly arched, but 



emarginate behind; metapraescutum broad and about twice -as long as 



scutellum 31. Pentacladocera Pierce. 



Wings with six primary veins 7. 



7. Median vein broken, with detached part on anal side; antennae normally 



flabellate, the flabellae longer than the basal portions of the joints. 



32. Neocholax Pierce. 



Median vein not broken ; antennae with sixth joint attached at middle of 



fifth, and seventh beyond middle of sixth 33. Muirixenos, new genus. 



8. Wings with 7 primary veins 9. 



Wings with 6 primary veins 12. 



9. Metapraescutum over twice as long as scutellum, very broad its whole 



length, pronotum subquadrate, embedded in head and mesonotum. 



34. Anthericonwia Pierce. 



Metapraescutum not twice as long as scutellum 10. 



10. Oedeagus with apex reflected 11. 



Oedeagus with apex reflected and outer angle produced, acutely; scutellum 

 widely separated from praescutum 35. Dacyrtocara, new genus. 



