658 PROCEEDINGS OF THE ACADEMY OF [1896. 



punctures, which, when the insect is held in certain positions, give 

 the dorsulum a transversely and irregularly striated appearance; 

 punctures of the scutellutri a little closer, those of the mesopleurse 

 more distinct ; legs robust, the hind tibise much thickened toward 

 apex ; abdomen sparsely punctured, the apical margins of dorsals 

 1-4 transversely depressed at apex, at which place the punctures 

 are closer; front, base of clypeus, a fringe on labrum, thorax above, 

 on center of mesopleurse and bat^e of middle segment, and a fringe 

 at apex of dorsals 1-3, ochraceous ; beneath the wings, extending 

 to sides of middle segments, a spot on each side of the first three 

 or four dorsals and the ventral scopa, whitish ; on the cheeks and 

 thorax beneath the pubescence is pale ; legs and last two or three 

 dorsals covered with a short ochraceous pubescence, that on the tarsi 

 the longer. Length, 13-16 mm. 



Two specimens. One without precise locality or date of capture ; 

 the other, the larger specimen, is marked, " From nest in insect tin, 

 November 28, 1894," and is from near Laga. The red color on abdo- 

 men in the larger specimens is more distributed than in the smaller. 



Megaohile crenulata n. sp. 



$. — Black; first joint of fore tarsi whitish; head strongly and 

 closely punctured above, more finely so on the front ; mandibles 

 longitudinally striato-punctate, tridentate at apex ; dorsulum and 

 scutellum strongly, closely and evenly punctured ; mesopleurse per- 

 haps a little more strongly punctured; 

 tibise cribrose externally ; fore coxse 

 with a long, obtuse tooth ; fore tarsi 

 with the first joint flattened and 

 Fig. 5. broadened, its anterior margin sinu- 



Last dorsal abdominal segment, ated medially ; abdomen closely punc- 

 Megachile crenulata. tared above, beneath more sparsely, the 



apical margin of all the segments (except the last) strongly depressed 

 and testaceous; last dorsal strongly emarginate and strongly crenu- 

 lated ; at the base of the last ventral on each extreme side is a 

 strong tooth; head in front, dorsulum, middle segment and base of 

 first dorsal with long, brownish or fulvous pubescence, which also 

 appears to a certain extent on scutellum, apical segments and the 

 legs, where it is more or less mixed with paler hairs ; cheeks, fore tarsi, 

 thorax beneath, first dorsal laterally, and the ventrals more sparsely, 

 with long, pale pubescence ; the first medial and hind tarsal joints 

 have a fringe of this pubescence ; apical margins of dorsals 2-5 with 



