1388  BuackBurN AnD Suarr—QOn some New Species and Genera of Coleoptera. 
especially being entirely testaccous; the elytra are longer, and the apical dorsal 
segment in both sexes is wider and less narrowed behind. I have not taken 
typical B. discedens on Kauai. 
(2) An insect occurring on Lanai closely allied to B. blackburni, Sh. (which I 
will call var. Lanaiensis). It differs from the type (which does not appear to 
occur on Lanai) in its greatly smaller size (Long. 22 m.m.), more parallel form, 
and paler antenne. 
T. B.J 
[As I was unable, when forwarding to Dr. Sharp the specimens on which he 
founded his descriptions of most of the species in this genus, to supply him with 
sufficient material for a satisfactory report on the sexual characters of many of the 
insects he described, I think it will be well for me to append some remarks on the 
subject, founded on the somewhat larger (but still scanty) material now in my own 
collection. A study of the sexual characters of the Hawaiian Brachypepli strik- 
ingly confirms Dr. Sharp’s division of the species into groups; I will therefore put 
my remarks into the form of a brief statement of the sexual characters of the 
several groups, together with such additional notes as may seem desirable. 
Group I. 
B. tinctus, Sh.; apertus, Sh.; protinoides, Sh.; torvus, Bl.; koelensis, BI. ; 
bidens, Sh.; olindz, Bl.; floricola, Bl.; inauratus, Sh.; affinis, Sh.; celatus, Sh. 
This group is flower-frequenting in the strict sense, being found on fresh 
flowers. 
Apical dorsal segment of male emarginate, with sides of emargination produced. 
Supplementary segment not well developed. 
The sexes of B. tinctus have been well described by Dr. Sharp. I may add that 
in my male specimen the hind body is dark fuscous down the middle, while the 
hind body of the female is clear testaceous. The males of B. protinoides (vide 
Trans. Ent. Soc., 1881, part iv. p. 510), B. bidens, inauratus, and affinis, also have 
been well described by Dr. Sharp; and I have myself described those of the others, 
except B. torvus and floricola, of which I have seen only the female. 
Group II. 
B. quadraticollis, Bl.; discedens, Sh.; metallescens, Sh.; parallelus, Bl.; vesti- 
tus, Bl.; varius, Sh. 
These species are not exclusively flower frequenting. Though generally 
obiained by beating flowers, they appear to be connected chiefly with the flower 
