270 CALIFORNIA ACADEMY OF SCIENCES. 



to Saussure's Division Iota, and seems to come closest to 

 jP. socm/25 Sauss., from Brazil. Its similarity in color to 

 Charter gus aj^icalis is really remarkable. 



MiscHOCYTTARus LABiATUS Sauss. Tepic. One speci- 

 men. 



APID^. 



Agapostemon melliventris Cress. San Jose del 

 Cabo. One $ specimen. Another unidentified species 

 having the abdomen entirely black, is in the collection, 

 from the same locality. 



Colletes sp. A specimen of a species related to 

 aethiops Cress. Tepic. 



Calliopsis mexicana Cress. Tepic. One specimen. 



Perdita sp. One specimen. Tepic. Related to 

 8-maculahis Say, from the United States. 



Anthidium notatum Latr. Two 5 specimens from 

 San Jose del Cabo, which represent a variety of this 

 species, differing in the paler markings, entirely black 

 femora, and by having greater part of tibi^ black; struc- 

 turally there is apparently no difference from specimens 

 from the eastern United States. 



Megachile sp. San Jose del Cabo. One ? . 



Ceratina mexicana Cress. Tepic. One ? speci- 

 men. 



Megacilissa thoracica n. sp. 



? . — Head black, the vertex with black pubescence; 

 front, face, clypeus at the sides and cheeks with pale pu- 

 bescence, more or less intermingled with black, except 

 on cheeks; clypeus with strong, sparse punctures; labrum 

 reddish, strongly furrowed down the middle; mandibles 

 reddish medially, strongly furrowed, the outer margin 



