48 Verm. 
XV. VERMES. 
Systematic. 
Callidina quadridens, n. sp., New Zealand ; Hilgendorf (166). 
Colurus gracilis, n. sp., New Zealand ; Hilgendorf (166). 
Diaschiza taurocephalus , n. sp., var. tenua n. v., semiaperta Gosse, New 
Zealand; Hilgendorf (166). 
Dinocharis inornata, n. sp., New Zealand; Hilgendorf (166). 
Hydatina monops, n. sp., New Zealand; Hilgendorf (166). 
Mastigocerca fleet ocaudaius, n. sp., rectocaudatus , n. sp., New Zealand; 
Hilgendorf (166). 
Melicerta fimbriata , n. sp., Botanical Gardens, Melbourne; Shephard & 
Stickland (350). 
Metopidia acuminata Ehrb., solidus Gosse var. latusinus n. v., p. 131, New 
Zealand; Hilgendorf (166). 
Microcodides , unnamed new species, p. 81, figg. 37 & 59 ; Lund (219). 
Notliolca regularis, n. sp., p. 132, allied to N.jugosa Gosse, New Zealand; 
Hilgendorf (166). 
Notommatapentophthalma, n. sp., New Zealand; Hilgendorf (166). 
Planoventer n. g. varicolor , n. sp., New Zealand; Hilgendorf (166). 
Polyarthra platyptera Ehrbg. var. maior n. v. from Lungernsee; Burck- 
HARDT (65). 
Postclausa n. g. minuta , n. sp., p. 125, circularis , n. sp., p. 126, New 
Zealand; Hilgendorf (166). 
GASTROTRIGHA. 
Bibliography ; Collin (99). 
Distribution. 
Lorraine. Gastrotncha in salt water ( Lepidoderma ocellatum Metschni- 
koff), p. 272; Florentin (127). 
MESOZOA. 
General Biology. 
General Account and Affinities; Delage & Herouard (111), Gar- 
bowski (142). 
Conjugation of Triclioplax ; Garbowski (142). 
Development of Dicyema. The same 9 is both nematogen and 
rhombogen at different periods being first nematogen and then rhombogen 
and combining both properties at the transition period; Wheeler (392): 
Stcecharthrum giardi Caull. & Mesn.; Caullery & Mesnil (77). 
Gastrsea Theory; Bergh (34); Garbowski (142). 
Plasmodial sacs or sporocysts, a phase in the life-cycle of Orthonectida; 
Caullery & Mesnil (77). 
Siedlechia Caull. & Mesn.: Affinities with Mesozoa; Labbe (194). 
Systematic. 
Division into 4 Classes: (1) Mesoccelia for Salinella , (2) Mesenchymia for 
Trichoplax and Treptoplax , (3) Mesogonia for Dicyemida and Ortho¬ 
nectida, (4) Mesogastria for Pemmatodiscus ; Delage & Herouard 
( U1 )- 
Dicyema coluber, n. sp. from Octopus punctatus of Californian Coast; 
Wheeler (392). 
