Add relevant page titles to custom taxonomy archive pages. This code can be dropped in the functions.php file. If used in a taxonomy.php template then omit the is_tax() conditional.

taxtitle-functions.php

<?php
// Do not copy opening PHP tag above

// Add titles to custom taxonomy archive pages
add_action( 'genesis_before_loop', 'wsm_add_taxonomy_title' );
function wsm_add_taxonomy_title() {
	if( is_tax() ) {
		global $wp_query;
		$term = $wp_query->get_queried_object();
		$tax = $term->taxonomy;
		$title = $term->name;
		
		echo '<h1 class="entry-title">' . $tax . ': ' . $title . '</h1>';
	}
}