HYMENOPTEUA. 2b5 



Those species, in which the two lateral divisions of the ligula are 

 as long as the labial palpi and setaceous, and where the males have 

 long antennae, form the subgenus Eucera proper. M. Spinola, 

 under the generic name of Macrocera, has separated from it certain 

 species in which the maxillary palpi liave but five distinct joints, and 

 tlie superior wings but two cubital cells. 



The Melissodes, Lat., are American Eucerffi with but four joints 

 in their maxillary palpi. They have three cubital cells. 



E. longicwnis ; Apis loncjicornis, L. ; 'Panz., Faun. Insect. 

 Germ., fascic, LXIV, 21, the male; LXVIII, 19, and LXIV, 

 16, the female. The male is black ; labrum and anterior extre- 

 mity of the head yellow ; its superior portion, thorax, and two 

 first abdominal annuli are covered with a russet-down ; an- 

 tennae black and somewhat longer than the body. The antennte 

 of the female are short ; the maxilhie and labrum project slightly 

 at base, the abdomen is marked with grey stripes, and the anus 

 is russet. She appears in the very beginning of spring *. 

 In the other Apiariae of this subdivision, the paraglossae are much 

 shorter than the ligula ; they always exhibit three cubital cells. 

 In some, the maxillary palpi evidently consist of six joints, as in 



Melitturga, Lat., 

 Where the antennae are short and terminated in a club in the males. 

 All the joints of the palpi are continuous and in the same direction \. 



Anthophora, Lat. — Megilla, Centris, Fab., 

 Where the antennae are filiform in both sexes, and the two last joints 

 of the labial palpi form a little oblique stem. The 



A.parietine, Ann. du Mus. d'Hist. Nat., Ill, builds her nest 

 in walls, and constructs a perpendicular and slightly curved 

 tube at its entrance, of grains of earth. Having deposited her 

 eggs, she destroys it, or perhaps employs it in closing up the 

 entrance |. 

 In others, the maxillary palpi consist of but five joints, and those 

 of the labial palpi are continuous. This is what distinguishes the 



Sarapoda, Lat. § 

 Finally, others have but four joints in their maxillary palpi. The 

 first joint of the posterior tarsi of the males is very large, curved, 

 and arched or concave at its internal extremity. A stout, dentated 

 spine is observable at the same end of the posterior tibiae of the fe- 

 males. 



Ancyloscelis, Lat. \\ 

 In those, the mandibles are pluridentated on the inner side ; the 

 maxillary palpi, as in the preceding subgenus, consist of but four joints. 



* Lat., Gen. Crust, et Insect., IV, p. 173. 



t Lat., Ibid., 173. 



X Lat., Ibid., 173. 



§ Lat., Ibid., 173. 



II Insects brought from Brazil by M. de Salnt-Hilaire. My genus Melitome, 

 Fatn. Nat. du R^gn. Anim., originally formed with female Ancyloscelides, must be 

 suppressed. That of tlie Tdrapedia, Kliig, perhaps re-enters the preceding one. 

 VOL. IV. X 



