AMERICAN HYDROIDS. 141 



FIG. 13. Thecocarpus myriophyllum. Hydrotheea (greatly enlarged). 



14. Thecocarpus distans (Allman). Part of hydrodadium (greatly enlarged). (After Allman.) 



15. Thecocarpus distans. Corbnla (enlarged). (After Allman.) 



16. Thecocarpus distans. Corbula leaf (enlarged). (After Allmau.) 



PLATE XXV. 



FIG. 1. Thecocarpus normani Nutting. Part of hydrocladiuni (greatly enlarged). 



2. Thecocarpus normani. Basal part of corbnla, and corbula stem (enlarged). 



3. Thecocarpus bcnedicti Nutting. Part of liydrocladiuni (greatly enlarged). 



4. Thecocarpus lienedicti. Front view of hydrotlieca 1 (greatly enlarged). 



5. Thecocarpus benedicti. Part of corbula (enlarged). 



6. Thecocarpus bispinosns (Allman). Part of bydroelailium (greatly enlarged). (After Allman.) 



7. Thecocarpiis bispinosiis. Corbnla (enlarged). (After Allman.) 



8. Thecocarpus bispinosus. Base of corbula leaf (enlarged). (After Allman.) 



PLATE XXVI. 



FIG. 1. Cladoearpus sigma (Allmau). Hydrocladium bearing phylactocarp and gouangia (enlarged). 



2. Cladocarpns sigma. Part of bydrocladiinn (greatly enlarged). 



3. Cladoearpus compression Nutting. Part of bydrocladium (enlarged). 



4. Cladoearpus compressus. Hydrotlieca (greatly enlarged). 



5. Cladoearpus compressus. Pbylactogonium (enlarged). 



6. Cladocarpns rentricosus Allman. Part of hydroeladium (after Allman). 



7. Cladoearpus ventricosus. Part of colony sbowing pbylactogonia and gouaugia (after Allman). 



8. Cladoearpus rentricosus. Gonangium (after Allman). 

 ( J. Cladoearpus Jierilis Verrill. Part of bydrocladium. 



10. Cladoearpus Jlexilis. Side view of hydrotbeca. 



11. Cladocarpits flerilis. Front view of hydrotbeea. 



12. Cladoearpus Jlenlis. Pbylactogonia and gouaugia. 



PLATE XXVII. 

 Flu. 1. Cladocarpns obliqitus Nutting. Part of hydrocladiuin (enlarged). 



2. Cladoearpus obliquus. Side view of hydrotlieca (greatly enlarged). 



3. Cladoearpus obliyuus. Pbylactogonia and gonangia (enlarged). 



4. Cladoearpus septattts Nutting. Part of bydrocladiuni (enlarged). 



5. Cladoearpus septatus. Side view of hydrotheea (greatly enlarged). 



6. Cladocarpns septatus. Front view of hydrotheea (greatly enlarged). 



7. Cladoearpus septatus. Front of stem (greatly enlarged). 



8. Cladoearpus septattts. Phylactogonia and gonangia (enlarged). 



9. Cladoearpus dolichotheea Allmau. Part of colony showing phylactogonia and gonangia (enlarged). (After 



Allman.) 



10. Cladoearpus dolichotheea. Side view of hydrotheea (greatly enlarged). (After Allman.) 



11. Cladoenrpus flesuosus Nutting. Part of hydrocladium (enlarged). 



12. Cladoearpus fescuosus. Front view of hydrotlieca (greatly enlarged). 



13. Cladoearpus flexuosus. Side view of hydrotheea (greatly enlarged). 



PLATE XXVIII. 



Flu. 1. Cladoearpus tennis Clarke. Part of hydrocladium (greatly enlarged). (After Clarke.) 



2. Cladoearpus tennis. Side view of hydrothecae (greatly enlarged). (After Clarke.) 



3. Cladocarpun grandis Nutting. Part of hydrocladium (enlarged). 



4. Cladoearpus grandis. Hydrotbeea (greatly enlarged). 



5. Cladoearpus grandis. Phylactocarp and gonangia (enlarged). 



6. Cladoearpus paradisea Allman. Part of bydrocladium (enlarged). (Alter Allman.) 



7. Cladoearpus paradisea. Phylactocarp and gonangia (enlarged). (After Allmau.) 



8. Cladoearpus speciosus Verrill. Part of bydrocladium (enlarged). 

 51. Cladoearpus speciosus. Hydrotbeca (greatly enlarged). 



10. Cladoearpus speciosus. Front of stem showing growing phylaotogonium (enlarged). 



11. Cladoearpus speeiosus. Proximal bydrotbeea, and a budding phylactogoniuiu (greatly enlarged). 



PLATE XXIX. 



Fin. 1. Cladoearpus pourtalesii Verrill. Part of hydrocladium (greatly enlarged). 



2. Cladoearpus 2>ourtalesii. Pbylactogonium and gonangia (enlarged). 



3. Cladoearpus earinatiis Nutting. Part of hydrocladium (enlarged). 



4. Cladoearpus earinatus. Side view of hydrotbeca (greatly enlarged). 



5. Cladoearpus earinatus. Front view of hydrotheese (greatly enlarged). 



6. Cladoearpus earinatus. Front of stem (enlarged). 



7. Cladoearpus earinatus. Part of bydrocladiinn bearing pbylaetogonia ami gonangia (enlarged). 



8. Jglaophennpsis hirsuta Fewkes. Part of hydrocladiuin (enlarged). 



9. Aglaophenopsis hirsuta. Side view of hydrotheea (greatly enlarged). 



