Figure 4 in An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae)

Figure 4. Characters distinguishing the genera of Carukiidae. The location of the characters illustrated in (A–J) are indicated on the specimen in the upper left hand corner. The rhopaliar niche ostium is always horizontally oriented and more or less oval in the Carukiidae; however, its shape may vary among specimens. Carukia: (A) rhopaliar niche with horns, (B) velarium, (C) tentacle with "neckerchiefs"; Malo: (D) rhopaliar niche with horns, (E) velarium; Gerongia: (F) rhopaliar niche with horns, (G) velarium; Morbakka: (H, I) differences of rhopaliar niche and horns between M. fenneri (H) and M. virulenta (I), in both cases the rhopaliar horns are "rabbit-ear" shaped but the angle and breadth of the horns vary, (J) velarium. nc: "neckerchief", nw: nematocyst wart, pl: perradial lappet, rn: rhopaliar niche, rno: rhopaliar niche ostium, rho: rhopaliar horn, ve: velarium, vec: velarial canal.Published as part of Bentlage, Bastian & Lewis, Cheryl, 2012, An illustrated key and synopsis of the families and genera of carybdeid box jellyfishes (Cnidaria: Cubozoa: Carybdeida), with emphasis on the "Irukandji family" (Carukiidae), pp. 2595-2620 in Journal of Natural History (J. Nat. Hist.) 46 (41-42) on page 2604, DOI: 10.1080/00222933.2012.717645, http://zenodo.org/record/520215