COCKERELL— HYMENOPTERA, APOIDEA 31 



or less at sides), narrow band at base of second, broad bands at base of third and fourth, 

 and sides of third, all light ferruginous ; dark parts of fourth and Hfth segments black or 

 brown ; no caudal rima, the fifth segment covered with fine hair. Hind spur minutely 

 pectinate, with about 13 teeth. Mouth-parts (measurements all in /x) : mandibles simple, 



Fig. 1. Spliecodes scotti, labium of female. 



1020 long, 375 broad at base ; labrum as shown in accompanying figure ; blade of maxilla 

 very short; maxillary palpi with joints measuring: (l) 100, (2) 135, (3) 160, (4) 160, 

 (5) 160, (6) 160. Labial palpi : (1) 135, (2) 120, (3) 100, (4) 120. Tongue short, pointed, 

 length 425, breadth at base 220. 



Localities. Seychelles Islands, five females collected by Mr Hugh Scott. The type 

 is from Silhouette, "plateau of Mare aux Cochons," September 1908. The others are all 

 fi-om Mahe ; two from Cascade Estate, about 1000 ft. alt., February — March 1909, two 

 from Cascade Estate, 800 — 1000 ft., not dated. 



This is an extremely distinct species, easily known by its largely red thorax. I do 

 not know any related form, although some males of other species look very similar. 



Subfamily Halictinae. 

 Halictus Latreille. 



2. Halictus aldahranus, sp. nov. 



$. Length about A\ mm., slender, black; clypeus yellow, with lateral margins and 

 two broad discal bars dark ; the discal bars are rounded at each end, and do not nearly 

 reach base or apex of clypeus ; the lateral lobes of clypeus have their yellow in the form 

 of a subpyrifoi-m patch, nearly divided from the rest of the yellow by a black band ; labrum 

 broad and short, black ; mandibles black, red at extreme tip; molar space nearly obsolete ; 

 tongue long and slender, extending about 340 fx beyond the labial palpi ; palpi normal, 

 length of maxillary palpi about 645 fx ; hind part of cheeks with long dull white finely 

 plumose hair ; eyes very strongly emarginate within ; ocelli large, diameter of middle 

 ocellus about 135 /x ; liead and mesothorax with very fine sculpture, minutely lineolate 

 passing into reticulate ; antennae long, entirely black, the flagellum hardly crenulated ; 

 second and third antennal joints very short, their combined length about equal to fbuith 

 (about 170 /Li); post.scutelluni lemon yellow; tubercles yellow; metathorax shining but 

 punctured, tlie truncation not distinctly defined, but the large ba.sal area distinct, mider 

 a lens appearing dull and granular, but when more magnified showing a very fine irregular 

 raised reticulation, passing into distinct plicte at the sides ; tegulae piceous, not punctured ; 



