Let X be an acyclic 2-complex and M an abstract regular neighborhood of X; ∂M_0=S², so cap off to get a homology 3-sphere M³.

... described multifasciatus (type locality Madagascar) and distinguished it from the common Cape capensis C. and V.

He counted off the children as they entered the coach.

Haemulon melanurum, the jeniguana, is known from the West Indies and south to Brazil. It is rather common at Havana, but was not found by us in Porto Rico. It grows to a foot in length and is a good food-fish.