394 Mr. T. D. A. Cockerell on new Hymenoptera 



Heniocha dyops. 

 Satu}-nia dyops, Maass. «& Weym. Beitr. Schmett. ii. fig. 21 (1872). 



I acquired a fair series of specimens of this species at 

 Pretoria, and found it to be very variable in markings. One 

 specimen agrees with the typical figure in having the ocellated 

 spot of the anterior wings connected with the transverse fascia ; 

 in all other specimens they are more or less widely separated. 

 The discal spot to the posterior wings is sometimes very 

 distinct, or absent on one wing, or totally wanting on both ; 

 the inner transverse fascia to the same wings is either com- 

 plete or sometimes abbreviated. 



I have not seen the type of H. marnoi's, Rogenh., but from 

 the description think it is but a varietal form of H. dyops ; 

 and as Mr. Kothschild is inclined to unite Rogenhofer's 

 species with H. hioculata, Auriv., there must, if my surmise 

 is correct, be considerable synonymy among the species of the 

 genus. 



XXXIX. — Contributions from the N^ew Mexico Biological 

 Station. — V. Some new Hymenoptera fi'om the Mesilla 

 Valley, Neio Mexico. By T. D. A. COCKEKELL. 



Apidae. 

 Centris ccesalpinicej sp, n. 



? . — Length 15-18 millim. 



Black ; head and thorax with ])ale ochraceous pubescence, 

 short and very dense on thorax, clypeus and sides of front 

 bare. Kyts, clypeus, labrum, and basal three fifths of 

 mandibles crimson. Clypeus shining, very sparsely punc- 

 tured. Mandibles truncate at tips and with four denticles, 

 alternating large and small, on inner side. Some very long 

 hairs spring from near the base of tlie mandibles beneath. 

 Antennae black, the end of the scape slightly tinged with 

 rufous. Front very broad, inner orbits parallel. Tegulaj 

 whitish. Wings smoky hyaline, nervnrcs and stigma fus- 

 cous, third submarginal cell narrowed more than half to 

 marginal, no distinct stump of a nevvure springing trom lower 

 outer corner of third submarginal. Legs black or dark 

 piceous, with black pubescence, and more or less pale 

 brownish pubescence on the four anterior legs; hind tibife 

 and basal joint of tarsi broadly dilated, with den.sc black 

 Lairs. Claws large, rufous at base, seeming to be entire, but 



