370 Dr. Rob. Lucas: Entomologie. Hymenoptera 1900. 
5. Clyp. a. labr. pale. 6. 
Clyp. a. labr. black (labr. acumin. at tip): 1. joint of flag. a little shorter 
than the united length of the 4 follow. joints; pubesc. of 4 h.-legs entirely 
black subhyalina Fox. 
6. Width of front, if anything, great. than the dist. betw. the anter. ocell. a. 
apex of clyp.; greater part of legs red, their pubesc. black, exc. on ant. fem. 
a. tib.; apic. marg. of dors. abd. sgms. 2 a. 3 laterally w. pale pubesc.; (elyp., 
labr., inn. orbits beneath a. mand. exc. apex, orange) rhodopus CKIl. 
Width of fr. less than the dist. betw. the ant. oc. a. apex of elyp., legs 
black, or dark brown. 
7. Width of elyp. anteriorly scarcely great. than its length in the middle; labr. 
comparatively small, subtriang., subacum. at tip; pubesc. on thorax beneath 
pale cockerelli n.n. (= hoffmanseggiae Ckll. 2). 
Width of clyp. anter. great. than its l. i. the m.; labr. larger, semilun., its 
apex broadly a. roundly slightly emarg.; pubesc. on thor. beneath dark brown 
or blackish atriventris Fox. 
1. Apex of dors. sgms. margined w. testac. 2. 
Abd. deep black, marg. of sgms. not at all testac. 3. 
2. 1. a. 2 sgms. bradly fasciate w. pale redd.-yell., which colour also marks the 
sides of abd.; sgms. 3—5 pale testac. at apex; pubesc. very dense, completely 
eoncealing sculpt. of thor. Length 21 mm. morsei Ckll. 
All the dors. sgms. margined apically with pale testac.; pubesc. sparser, 
seulpt. of dors. a. mesopl. more or less obvious; length 16 mm. 
marginata n,sp. (or var. of morsei). 
3. Eyes strongly converg. above; 1. joint of flag. as long as 4 follow. united; 
abd. pruinose above, espec, on first 2 sgms., the others sparsely; clyp. a. 
labr. white. 
Eyes not or scarcely conv. above. hoffmannseggiae Ckll. 
4. Front broad 
Front narrow, dist. betw. ant. ocell. a. apex of clyp. much greater than the 
greatest width of front. 
5. Scape wholly dark, mand. dark redd. brown, w. black tips, legs dark 
caesalpiniae Ckll. 
Sc. beneath a mand. more or less yell.; legs redd., abd., at least laterally, 
w. bands of pale hairs at apex of dors. sgms. 2—4 rhodopus Ckll. 
6. Pubesc. of thor. beneath dark brown or black, that on 4 h.-legs entirely 
black, 1. joint of flag. short. than the follow. 2 unit. atriventris Fox. 
Pub. of th. pale beneath, med. tib. outwardiy a. base of h.-tib. externally w. 
pale hairs; 1. joint of flag. nearly as long as the 3 follow. united 
lanosa Üress. 
Das Weitere siehe unter den zu Anfang eitirten Untergattungen. 
Centris apicalis Sm., elegans Sm., haemorrhoidalis Fabr. u. xylocopoides Fox auf 
St. Vincent. Ashmead, Trans. Entom. Soc. London, 1900 p. 209. 
rhodopus Okll., &; lanosa Cress. &; hoffmanseggiae Ckll., Q &, alle drei auf 
Blüten v. Prosopis glandulosa Torrey Cockerell (14) p. 243. 
Neue Species: Friese, Termesz. Füzetek, vol. 23. 
A. aus Mexico: clypeata p. 41. — sericea p. 41. 
