The image is a detailed black and white illustration of a blow-fly's proboscis, likely from a scientific or entomological text. The proboscis is depicted in a close-up view, showcasing its complex structure. It appears as a segmented, tube-like appendage with a series of ridges, grooves, and bristles. The illustration is highly detailed, with fine lines and shading used to represent the texture and form of the proboscis. The overall style is reminiscent of a vintage scientific drawing, with a focus on accuracy and precision. Below the illustration, there is text identifying the subject as 'PROBOSCIS OF BLOW-FLY' and a magnification scale of 'x 40'. A note at the bottom right reads '[to face page 71-'. The background is a pale yellow, providing contrast to the dark illustration.