38 
TRANSACTIONS OF THE TEXAS ACADEMY OF SCIENCE. 
32. Melissodes atrata Smith. — On flowers of Sphaeralcea sp.? April 
7. Described from Oaxaca. 
33. Melissodes floris Ckll. — On flowers of Bidens leucantha(?) Willd. 
March 8 to 23. “This is closely allied to the U. S. M. aqilis Cress.” 
(Ckll.) 
34. Melissodes labiatarum Ckll. — On flowers of No. 1, March 11; and 
Teucrium sp., April 7 to 8. 
35. Melissodes pernigra Ckll. — On flowers of Ipomoea sp. March 16 
and 26. “Closely allied to M. atrata and bimaculata. In the U. S., Rob- 
ertson has observed the allied M. bimaculata visiting Ipomoea.” (Ckll.) 
36. Melissodes pinguis Cress. — On flowers of Sphaeralcea sp.(?) 
March. “A remarkable species peculiar to Mexico. The $ is dichroic, 
one form having hair silvery, the other golden.” (Ckll.) 
37. Melissodes raphaelis Ckll. — On flowers of No. 1, Vernonia sp., No. 
7, and Ipomoea batatas (L.) Lam. March 8 to 15. “Allied to M. gilensis 
Ckll. ined., from New Mexico.” (Ckll.) M. gilensis was collected by 
the writer on the headwaters of the Gila. 
38. Entechnia fulvifrons Smith.- — -“A Neotropical species, which goes 
north as far as Comal county, Texas. It is represented in the eastern 
and southern IJ. S. by the closely allied E. taurea Say.” (Ckll.) 
39. Xylocopa sp. — On flowers of No. 18. March. A U. S. and trop- 
ical genus. 
40. Bonibus carolinus L.(?) — “A Neotropioal species. Smith has de- 
scribed it as B. excellens from Venezuela.” (Ckll.) 
41. Apis mellifica L. — Occurs at San Rafael on various flowers. 
42. Euglossa sp. — “A Neotropical genus not found in the TJ. 1 S.” 
(Ckll.) 
43. Exomalopsis penelope Ckll. — On flowers of Cordia sp., prob. ferru- 
ginea , and No. 34. July. “Allied to E. solani Ckll. from southern New 
Mexico, and still more to E. tarsata Smith from Santarem, Brazil. The 
genus is Neotropical , going only as far north as Albuquerque, N. M. 
Two species are found in the Mesilla Valley, N. M.” (Ckll.) 
44. Temnosoma smaragdinum Sm. var. $ 9 — On flowers of the Cordia . 
June. 
45 and 46. Melipona , 2 spp. — On flowers of No. 11. March. “Neo- 
tropical genus not found in the IT. S. Very abundant in the tropics/’ 
(Ckll.) 
It will he seen from the above list of 44 species of bees, that fully one- 
half are strictly Neotropical species — either known species, or new species 
which present affinities with such, thereby indicating their relationship 
with them; while a large part of the remainder are modified forms, ap- 
parently descended from N eotemperate species, hut having become Neo- 
tropical through long inherited adaptation to their surroundings. 
