26 Mr. T. D. A. Cockerell — Descriptions and 



MegacMle montezuma, Cresson. 

 Quirigua, Guatemala, one female {W. P. Cockerell). 



Megachile aurant'qiennis, sp. n. 



? . — Length about 8 mm. ; anterior wing 7. 



Black, short and broad, the antennae, mandibles, and legs 

 black, spurs dark ; head large ; mandibles broad, of the 

 quadrideutate type, but the teeth little developed ; clypeus 

 convex, shining, densely punctured, at sides, sparsely in 

 middle, the lower margin broadly and quite deeply emar- 

 ginate, with a median tubercle ; mouth-parts rather short ; 

 cheeks about half as wide as eye ; front, vertex, and cheeks 

 very densely punctured, with largely appressed shining 

 ochreous pubescence, only moderately dense; a little band 

 of the same shining hair extends down anterior orbits, but 

 is overlapped by black hair ; mesothorax densely covered 

 with appressed shining ochreous (golden-brown) hair, 

 tubercles densely tufted with pale hair, and a tuft of fulvous 

 hair behind the wings ; pleura strongly punctured ; tegulse 

 ferruginous, with a basal tuft of short black hair. Wings 

 orange-ferruginous, with ferruginous nervures and unusually 

 large stigma ; apical field brownish hyaline, not orange, the 

 apex of marginal cell and beyond fuscous. Hair on inner 

 side of tarsi red ; hind basitarsus broad and flat. Abdomen 

 short and broad, fourth and fifth segments with broad dense 

 apical bands of golden-ochreous hair, and sixth covered with 

 the same ; ventral scopa pale golden-ochreous, without 

 black, at base (second segment) with a large V-shaped band 

 of yellowish-white hair. 



^ . — Length about 6 ram. 



Similar to the female, except in the usual sexual cha- 

 racters and those now given ; clypeus not emarginate, almost 

 without ])unctures in middle ; sides of face with consjncuous 

 pale golden-ochreous hair, not overlapped with black ; an- 

 tennai long, ordinary ; base of metathorax with a median 

 groove ; tegulse rufo-piceous. Wings dusky ferruginous 

 instead of clear orange. Anterior legs simple; no coxal 

 spines. First abdominal segment fringed with ochreous hair ; 

 end of abdomen with two short, sharp, black spines, far apart. 



Hub. Quirigua, Guatemala, one of each sex, at flowers of 

 plant no. 15, Feb. 11, 1912 {JV. P. Cockerell). The male is 

 the type. 



Allied to the Mexican M. bidentis, Ckll., but easily sepa- 

 rated by the hair on the mesothorax and the colour of the 



