xv, 3 Cockerell: The Black Halictine Bees 275 



Halictus thoracicus var. merescens var. nov. 



Female — Tegulae rufous or rufotestaceous, sometimes darker; 

 stigma reddish brown to dark brown. 



Luzon, Mount Banahao {Baker) 7; Los Banos (type locality 

 of variety) {Baker) , 3 ; Mount Maquiling {Baker) , 5. Panay, 

 Antique Province, Culasi {McGregor) , 1, at flowers of Homalan- 

 thus populneus Pax, June 3, 1918. Leyte, Tacloban {Baker), 

 1. Mindanao, Davao {Baker), 1. 



I have seen true H. thoracicus Friese from Buitenzorg, Java 

 {Bryant and Palmer). 



Halictus banahaonis Cockerell. 



Halictus banahaonis Cockerell, Ann. & Mag. Nat. Hist. VIII 14 

 (1914) 365; 15 (19l5) 264; Crawford, Proc. Ent. Soc. Washington 

 19 (1918) 169. 



Luzon, Mount Banahao {Baker), 4; Paete {Baker), 1. 



The hind margin of the first abdominal segment is lineolate, 

 not punctured all over as in baguionis Crawford, contrary to 

 the statement in Crawford's table, loc. cit. 



Halictus banahaonis var. macerula var. nov. 



Female. — Smaller; anterior wing, about 5 millimeters long 

 (about 6 millimeters in type) ; length of insect, 6 to 6.5 milli- 

 meters. 



Luzon, Mount Banahao {Baker), 18. The difference of size 

 and bulk is very conspicuous, and the two lots are uniform. 

 Presumably the two forms are adapted to different flowers. The 

 type of the variety is Baker 2556. 



Halictus eschscholtzi sp. nov. 



Halictus manilse Strand (not of Ashmead), Berl. Ent. Zeitschrift 54 

 (1909) 210; Crawford, Proc. Ent. Soc. Washington 19 (1918) 169. 



Female {type). — Length, about 7 to nearly 9 millimeters; 

 black, with the tubercles yellow ; mandibles bright chestnut red, 

 except at base; knees, tibise, and tarsi reddish yellow, or the 

 anterior tibiae light red with a yellow stripe, the middle and 

 hind tibiae and hind basitarsi each with a large dusky area; 

 flagellum red beneath, and scape with a red basal spot; hair 

 of head and thorax ochraceous, abundant on thorax, forming 

 a fine down on mesothorax, conspicuous in certain lights, not 

 in others, but sides of mesothorax with dense bands of tomen- 

 tum, posteriorly extending narrowly in front of scutellum; 

 mesothorax dull, it and the scutellum very minutely rugosely 



