﻿164 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 102 



The examination of a considerable amount of material has enabled 

 me to construct a key, which is presented here in the hope that it vnW 

 be found to be an improvement over Hennig's rather sketchy one, 

 wherein the subspecies are brought out in several different places 

 among other species. A map (fig. 73) , based upon Hennig's data and 

 material examined by me, is also offered as a graphic resume of the 

 distribution of the various races. 



KEY TO THE SUBSPECIES OF MIMEGRALLA ALBIMANA > 



1. Hind femora yellow, with three or less brown or blackish rings, the third 



ring always clearly subapical, the tip of the femora yellow ; when the rings 

 are of some length : Brown with four yellow rings, the fourth covering 

 the tip 2 



Hind femora brown or blackish, with to 3 yellowish rings : Basal, distomedian, 

 and apical when complete (sometimes a nerrow proximomedian ring divides 

 the median black section in M. a. striatofasciata) 4 



2. Mesopleura with brassy pruinose area posteriorly, which is part of a sterno- 



mesopleural band ; mesonotum posteriorly usually with a pair of similar but 

 less distinct longitudinal stripes (Philippine Islands: Taiwan; Ryukyu 

 Islands; Marianas Islands; Caroline Islands; Palau Islands). 



3c. M, a. g'albula (Osten-Sacken) 



Pruinosity of mesopleura indistinct, not sharply delimited, less distinct than 



that of sternopleura 3 



3. A reddish interantennal spot present; palpi wholly yellow (Malay States: 



Borneo; .Java) 3a. M. a. albimana (Doleschall) 



Interantennal spot lacking; tip of palpi black; femoral rings strong (Celebes, 

 Halmahera, Amboina, Aroe Islands; ? Ternate). 



3b. M. a. sepsoides (Walker) 



4. Hind femora unicolorous black (New Hebrides) 3f. M. a. extrema Hennig 



Hind femora with yellow rings 5 



5. Basal hind femoral ring about four times width of femur, the rings well- 



defined; wings dilute brownish, with a single more distinct crossband in 

 middle; anterior margin of front frequently reddish (New Guinea). 



3d. M. a. contraria (Walker) 

 Basal hind femoral ring twice or less width of femur 6 



6. Wings hyaline with 2 well-defined crossbands (Admiralty Islands ; Bismarck 



Islands; Solomon Islands) 3e. M. a. striatofasciata (Enderlein) 



Wings dilute brownish with a single more distinct crossband in middle 7 



7. Middle and hind femora with a distinct subapical ring, also yellow at tip 



below; thorax rather shining above (Samoa; ? Fiji). 



3g. M. a. samoana (Czerny) 



Middle and hind femora without distinct subapical ring; thoracic dorsum 



grayish centrally (Tonga Islands) 3h. M. a. tongana (Czerny) 



3a. MIMEGRALLA ALBIMANA ALBIMANA (Doleschall) 



Hennig adduces from a study of type material that this, the typical 

 subspecies, was first described from Java. It is also known from the 

 Malay States and Borneo. I have not seen specimens. 



ijf. o. keiensis Hennig Is not Included; see discussion under M. a. keiensis (p. 167). 



