Review of the genus Monotheca (Hydrozoa: Leptolida) from Australia with description of a new species and a note on 
Monothecella Stechow, 1923 
73 
Figure 1. A-G, Monotheca amphibola sp. nov. (drawn from holotype and paratypes). A, fertile stem with male and female gonothecae; B, 
hydrocladium and hydrotheca; C, median inferior nematotheca; D, cauline nematotheca; E, one of twin lateral nematothecae; F, axillar 
nematotheca; G, hydrorhizal nematotheca. H-N, Monotheca australis. H, infertile stem; I, hydrocladium and hydrotheca; J, female gonotheca 
with developing larva; K, median inferior nematotheca. Note clear demarcation between cup and peduncle (I) and its absence (K); L, axillar 
nematotheca; M, one of twin lateral nematothecae; N, axillar hydrostatic pore (axillar nematotheca not shown). Scale bar: A, 1 mm; B, I, H, 0.2 
mm; C-G, K-N, 0.1 mm; J, 0.5 mm. 
