INSSCUTOR INSCITI^ MENSTRUUS 115 



although, by the time I reached Laurel, they had become 

 scarce and worn. 



The egg is elliptical, rather thickly fusiform, a little flattened 

 on one side, large, shining black, laid singly. 



Eggs obtained about July 15, 1917, though repeatedly wet, 

 failed to hatch and appear destined to hibernate. 



Grabhamia vittata was described by Theobald from Pecos 

 Canyon, New Mexico, the description being indeterminate and 

 applying to any species of the cantans group. Mr. Theobald 

 had males and larvae, but the genitalia were not described and 

 the larvae were wrongly associated, being those of Culiseta 

 incidens Thomson. The species therefore rests solely on the 

 locality. This is in the Rocky Mountain range and therefore 

 we probably have to do with the species of that region. There 

 are but two of the cantans group known from the region and 

 probably but two occur, judging from the analogy of Cali- 

 fornia, where we have two, increpitus Dyar in the river pools 

 and palustris Dyar in the marshes. I have identified the 

 river pool species as sansoni Dyar & Knab ; but the name 

 vittata remains indeterminate. 



The foregoing was written under the assumption that the 

 two Rocky Mountain forms of the cantans group were indis- 

 tinguishable in the female adult. While the manuscript was 

 in the printer's hands, I have gone over the matter more care- 

 fully. In California, palustris is distinguishable from increp- 

 itus by the excess of white scales on the wings. It occurred 

 10 me that the same might be true of mimesis as compared 

 with sansoni. A careful examination of females showed that 

 two series could be separated on this character. The distinc- 

 tion is not as marked as in the Californian forms, but it is 

 there. On this basis, I re-examined the three females of 

 vittata Theobald which are before me from the lot that fur- 

 nished Theobald's types, and they are all sansoni. 



But whether a restriction of vittata be made or not, the name 

 becomes a homonym and must be dropped. Bigot described 

 Culex vittatus in 1861, which is considered a synonym 

 of A'edes sugens Wiedemann. Therefore the name vittatus or 

 vittata cannot be used again in the genus. 



