FIGURES 26–35 in The bryozoan genus Arbocuspis (Cheilostomata, Electridae) from the Indian Ocean, with description of a new species from off southwestern Thailand, Andaman Sea

FIGURES 26–35. Arbocuspis multicornis (Hincks, 1881), PMC. Rosso Australia Collection, H.B.73 a: 26, stellate colony consisting of four lobes diverging from a damaged ancestrula. Note as the top-right branch grows in opposite direction (enlarged in 27) from a bud along a previous lobe; 28–29, group of zooids from the same colony seen from the above (28) and inclined (29) to show the bending of the three branching spines originating proximally to the edge of the opesium and the length of the gymnocystal spines frontally projecting from both lateral sides of the opercula; 30–32, large fan-shaped lobe of a second colony in which only few zooids near the growing edge have three spines (30) whereas large plagues of aged zooids (enlarged in 31 and 32) show four or five branched spines forming a nearly continuous, paisley designed, roof over the frontal membrane; 33, close-up of the lateral edge of a colony branch, showing an abutting zooid only consisting of an incomplete gymnocystal portion distally closed by a membrane. Note some budding loci along marginal zooidal walls; 34–35, general view (34) and detail (35) of the sole observed giant ancestrula from a third colony, including a very extensive bulging flat sac bordered by an unknown number of spines, from which two zooids originate, smaller than the subsequent ones. Scale bars: 22, 1 mm; 23, 0.100 mm; 24–25, 28, 30, 33, 0.200 mm; 26–27, 32, 0.500 mm; 29, 31, 34-35, 0.100 mm.