Descriptions and Records of Bees, 283 



Ceratocheilus gilesi, sp. n. 



Head dark grey. Thorax and abdomen almost uniform 

 brownish ochreous, thorax without distinct markings. 

 Wings entirely unspotted, not even darkened on the cross- 

 veins ; discal cell open, coalescent with second posterior 

 cell ; great cross-vein slightly beyond base of second 

 posterior cell ; second vein somewhat straighter and shorter 

 than in C. cormgerum. 



Length of body 5'5 mm. ; rostrum 5 ; wing 4'5. 



The open discal cell and hyaline wings of this species 

 render it very distinct. 



Summary. 



The following species have been noticed in the preceding 

 paragraphs : — 



1. Ceratocheilus cornigerum (Speiser). 



Syn. Styringomyia cornigera, Speiser (1908). 



Ceratocheilus winnsampsoni, Wesch^ (1910). 



2. Ceratocheilus gilesi, sp. n. 



3. Toxorrhina (?) madagascariensis, Meunier. 



4. Toxorrhina grahami (Wesche). 



Syn. Neoceratocheilus grahami, Wesche. 



5. Toxorrhina cisatlantica, Speiser. 



6. Styringomyia didyma, Grimshaw (1901). 



Syn. Idiophlebia pallida, Griinberg (1903). 



7. Styringomyia crassicosta (Speiser). 



Syn. Idiopheblia crassicosta, Speiser. 



XXXIX. — Descriptions and Records of Bees. — XXXVllI. 

 By T. D. A. COCKERELL; University of Colorado. 



Megachile bicolor taiivana, subsp. n. 



? . — Differs from Indian M. bicolor as follows : abdomen 

 not so broad at base ; hair of pleura entirely pale, slightly 

 yellowish, the general effect being pale yellowish grey ; no 

 fuscous hair near base of wings above; ventral scopa a 

 little reddish subapically. 



