On a neio Genus o/ Aviculaviidse. 141 



Fiff. 6. Gomphoides calverti, Kirby, S , typs- Terminal segments of 

 abdomen and anal appendages, in left profile view. P. Ilighley 

 cam. luc. et del. 



Fig. 7. Ditto. Penis and its vesicle, in left profile view. P. Highley 

 cam. Inc. et del. c, second joint of penis ; d, vesicle of penis. 



Plate VII. 



Fig. 8. Gomphoides camposi, Calvert, c? , type. Penis and its vesicle, in 

 left profile view. P. P. Calvert cam. luc. et del. c, second 

 joint of penis ; d, vesicle of penis. 



Fig. 9. Ditto. Genitalia of second abdominal segment, in left profile 

 view. P. P. Calvert cam. luc. et del. a, anterior hamule ; 

 6, posterior hamule; c, second joint of penis; d, vesicle of 

 penis. 



Fig. 10. Zonophora hodkini, sp. n., $ , type. Left wings. F. W. Cam- 

 pion photo. 



Fig. 11. Ditto. Vulvar lamina. H. Knight del. 



Fig. 12. Ditto. Maxilla. H. Knight del. 



Fig. 13. Ditto. Mandible, external view. H. Knight del. 



Fig. 14. Ditto. Mandible, internal view. H. Knight del. 



Fig. 15. Zonophora spectabilis, sp. n., (5, type. Left wings. F. W. 

 Campion photo. 



XVIII. — An interesting new Genus of Aviculariidse. By 

 Mello-Leitao, Al.D., Fellow of the Brazilian Society of 

 Sciences. 



Amongst the abundant material of large Brazilian Mygales 

 from the Museum of Natural History at S. Paulo, I have 

 found one very interesting species, collected at Marianna, 

 Estado de Minas Geraes, by Mr. Jos^ Pinto da Fonseca, 

 which is the type of the new genus described below. 



Ancylochieos *, gen. nov. 



Type, A. taunayi, sp. n. 



Oephalothorax low, a little longer than wide, the central 

 fovea deep, transverse. Tlie ocular tumulus not much broader 

 than long. The anterior row of eyes strongly procurved, the 

 anterior edge of the medians being behind the posterior edge 

 of laterals ; eyes nearly evenly spaced and subequal. Poste- 

 rior medians much smaller than the anterior medians ; 

 posterior laterals about as large as the anterior laterals. 



Labium much broader than long, with the tip densely 



* ayKvXos, curved ; x^'P, hand ; an allusion to the shape of the palp- 

 tarsus in female. 



