Rhagovelia danpolhemi sp. nov., from the Caribbean Slope of Costa Rica and R. springerae sp. nov., from the northern portion of the country, are described, illustrated, compared with similar species, and included in a key to species recorded from the country. Rhagovelia calopa Drake & Harris, R. spinosa Gould, and R. tantilla Drake & Harris are recorded for the first time from Costa Rica. New p...

Remarks on Laius Guérin-Méneville and Dicranolaius Champion are provided. Laius falcifer Champion, 1921 is designated as the type species of Dicranolaius Champion, 1921. Dicranolaius bellulus is attributed to Boisduval (1835) not to Guérin-Méneville (1830). Dicranolaius c-purpureus (Lea) is redescribed and two closely related new species are described: D. weiri sp. n., and D. similis sp. n. Int...

We report a 50-year-old woman diagnosed with Sneddon's syndrome and examined by CBF scintigraphy several times for follow-up of the disease. There were no significant changes in her CBF scintigraphic findings or neurological status during the 6-year follow-up period. Sneddon's syndrome is a slowly progressive disorder in which livedo reticularis precedes cerebrovascular accidents. Because small...