19 
Laomedea striata (Clarke). 
Obelia striata Clarke 1907, p. 9. PI. 6 and 7. 
This species was found by the “Albatross” in the eastern trop- 
ical Pacific at Lat. 0° 34’ N., Long. 117° 15.8’ W. and Lat. 7° 
12.5 S., Long. 84° 09’ W., in both cases on pteropod shells, the 
species of which is, however, not stated. Clarke (1907) gives a 
number of excellent drawings of this pretty hydroid. The hydro- 
theca is mainly characterized by the marginal teeth having “well- 
developed crests projecting inward”. Owing to the young medusa 
with 4 main tentacles, the species would certainly, in Nutting’s 
classification, be placed in the genus Clytia. In accordance with 
the classification proposed by Le vin sen and Broch I, however, 
refer it to the genus Laomedea. 
Though hitherto only two colonies have been found (in the 
Pacific), this species is in faet exceedingly common in the tropical 
parts of the oceans. — Material examined: 
On Hyalæa (Diacria) trispinosa: 
Atlantic: Numerous localities between Lat. 27° 03’ N. and 
31 0 16 S., from the coast of Africa to South America and the 
West-Indies. 
Indian Ocean, from east of Southern Africa to south of 
Madagascar, Lat. 30° 50 —38° 50’ S. by Long. 24—47° E. 
Further at Lat. 23° S., Long. 72° E. and Lat. 25° 50’ S., Long. 
102° 50’ E. 
Pacific: one specimen, without further statement of locality. 
On Cuvierina coliimella: among several hundreds of specimens 
examined only 4 were found to be covered with hydroids; the 
latter all belonged to Laomedea striata. Localities: Lat. 0°30’ N., 
Long. 29 °W.; Lat. 14° 46’ N., Long. 28° W.; Lat. 23° 24’ N., 
Long. 81 ° 20’ W. 
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