138 INSi;cUTOR INSClTIyE MENSTRUUS 



of black scales can be seen running down the dorsal side of the 

 fourth joint. This line is very narrow in these types and 

 others, although commonly distinct, but it is not a specific 

 character. In fauna the white becomes more extensive on the 

 mid tarsi, occupying all of the second joint below and touch- 

 ing the tip of the first joint ; but as the male genitalia are 

 identical, I scarcely think that the form will be found to rep- 

 resent a distinct species. 



Genus MENOLEPIS Lutz 



Menolepis Lutz, in Peryassu, Os Culic. do Brasil, 303, 1908. 



Type species: Wyeomyia leucostigma Lutz (in Bourroul, 

 Mosq. do Brasil, 67, 1904). 



The male of the type species is unknown to me. I take the 

 characters from albosquamata Bonne- Wepster & Bonne, found 

 in Bromeliacese. M. leucostigma is reported as breeding in 

 water at the leaf -bases of Typha. 



TABLE OF SPECIES 



(Coloration) 



1. Prothoracic lobes blue leucostigma Lutz 



Prothoracic lobes dark like mesonotum 



ALBOSQUAMATA Bonne-Wepster & Bonne 



Menolepis albosquamata Bonne-Wepster & Bonne (PI. V, 

 fig. 10). 



Wyeomyia albosquamata Bonne-Wepster & Bonne, Ins. Ins. 

 Mens., vii, 107, 1919. 



Larvae found in Bromeliacese along the Lawa River, Sur- 

 inam, by Mrs. J. Bonne-Wepster and Dr. C. Bonne. 



Genus DODECAMYIA, new genus 

 Type species : Wyeomyia aphobem^ Dyar. 



TABLE OF SPECIES 



(Coloration) 

 1. Colors of the abdomen separated on the sides in a straight 



line 2 



The black color incised by the ventral white on the anterior 

 angles of the segments splendida Bonne-Wepster & Bonne 



