[sect. 2]
etiam nunc: although the siege has begun.
explices: cf. implice, 1n.
ad adversarium: the MSS. do not contain ad, but we must either insert it or regard its omission as not unnatural in a letter from Pompey, written in haste. See Crit. Append. Pompey always speaks of Caesar as an adversarius (cf., e.g., Att. 8.12B.1 (bis); 8.12C.1). Probably the senate had not technically declared him an hostis (cf. Schmidt, Briefw. 112).