Ins. 197 
(b.) HYMENOPTERA. 
Structure of $ organs; Veriioeff, Zool. Anz. xvi, p.407, Boiidas, C.R. 
Ac. Sci. cxvii, pp. 316 & 317. 
ACULEATA. 
[Cf. Andre (14-17), Bargagli (38), Bellevoye (47), Bordas (00, 91), 
Bos (92, 93), Cameron (390), Costa (199, 200), Dalla Torre (213), 
Davidson (218). Emery (261-266), Ferton (310), Forel (320-328), 
Fox (331-336), Friese (341, 312), Frogoatt (344), Gribodo (394, 
395), Handlirsch (424, 425), Hart (429), Janet (493-496), Kohl 
(534-537), Marchal (613, 614, 615), Mayr (624), MOller (641), 
Morawitz (652, 653, 654), Nicolas (672), Planta (726), Radosz- 
kowski (738, 740,741), Robertson (809), Reed (751), Saiilrerg 
(831), Schultess-Rechberg (856), Sharp (890), Sickmann (898), 
Shipp (897), Spencer (930), Yachal (1000), Veriioeff (1005-1009), 
Wasmann (1020), Weismann (1046).] 
Origin of forms of social insects ; Weismann (1046), Spencer (930). 
Abundance of llymenoptera in Eugland in 1893 ; Latter (573). 
Apid,e. 
Acanthopus splcnclidus, male armour ; Radoszkowski, p. 188, pi. vii, 
fig. 49, Bull. Soc. Moscou, 1893. 
A.jheringi , Brazil, Gribodo, Bull. Soc. ent. Ital. xxv, p. 417, n. sp. 
Agapostemon nigricornis y radiatus , synonymy ; Robertson, p. 148, Tr. 
Amer. ent. Soc. xx. 
A. bicolor , Illinois, Robertson, p. 148, Tr. Amer. ent. Soc. xx, n. sp. 
Aglae ccerulea, male armour ; Radoszkowski, p. 186, pi. vii, fig. 44, Bull. 
Soc. Moscou, 1893. 
Andrena atrata , p. 62, braunsiana , p. 63, Hungary, croatica , p. 65 ,dragana, 
p. 67, gro8m, p. 69, Fiumo, hungarica , p. 70, Hungary, korlcviciano , 
p. 72, liburnica, p. 74, Fiume, niveala ) Germany, p. 76, sisymbrii , 
Hungary, p. 78, Friese, Bienen-Fauna, Deutschland ; A. tram - 
caspica , germabica , Central Asia, Radoszkowski, p. 56, Horne Soc. 
ent. Ross, xxvii ; A. serotina, scutellaris, N. America, Robertson, 
p. 148, Tr. Amer. ent. Soc. xx ; A. cratcegi , Illinois, Robertson, 
p. 273, t, c. : n. spp. 
Anthidium germabicum , p. 48, seraxense y p. 49, Transcaspian Region, 
Radoszkowski, Horne Soc. ent. Ross, xxvii, n. spp. 
