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We present the results of processing an additional 44% of the High TimeResolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey, the mostsensitive blind pulsar survey of the southern Galactic plane to date. Ourpartially-coherent segmented acceleration search pipeline is designed to enablethe discovery of pulsars in short, highly-accelerated orbits, while our 72-minintegration lengths will allow us to discover pulsars at the lower end of thepulsar luminosity distribution. We report the discovery of 40 pulsars,including three millisecond pulsar-white dwarf binary systems (PSRs J1537-5312,J1547-5709 and J1618-4624), a black-widow binary system (PSR J1745-23) and acandidate black-widow binary system (PSR J1727-2951), a glitching pulsar (PSRJ1706-4434), an eclipsing binary pulsar with a 1.5-yr orbital period (PSRJ1653-45), and a pair of long spin-period binary pulsars which display eithernulling or intermittent behaviour (PSRs J1812-15 and J1831-04). We show thatthe total population of 100 pulsars discovered in the HTRU-S LowLat survey todate represents both an older and lower-luminosity population, and indicatesthat we have yet to reach the bottom of the luminosity distribution function.We present evaluations of the performance of our search technique and of theoverall yield of the survey, considering the 94% of the survey which we haveprocessed to date. We show that our pulsar yield falls below earlierpredictions by approximately 25% (especially in the case of millisecondpulsars), and discuss explanations for this discrepancy as well as futureadaptations in RFI mitigation and searching techniques which may address theseshortfalls.

The High Time Resolution Universe Pulsar Survey -- XVI. Discovery and timing of 40 pulsars from the southern Galactic plane