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CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



11-27, January, 1910. Johnson closely followed this with a 

 review of the species of our Atlantic coast and Greenland, four 

 in number, in Psyche, xvii, 76-78; April, 1910. As the rich 

 fauna of our west coast was only partly known to Stein, and 

 as his paper is not very accessible, I offer a new treatment of 

 our species, both east and west. 



Generic characters. — Maritinia shows the following charac- 

 ters in both sexes : front wider than one eye ; a single large pair 

 of cruciate bristles on the front; fronto-orbitals 6 in a single 

 row, the upper 3 somewhat outcurved, the lower incurved; 

 verticals two pairs ; ocellars large, two smaller pairs behind the 

 triangle; parafacials narrow, bare; antennae short, with bare 

 arista ; eye small, bulging, bare, nearly round ; bucca fully one- 

 half the eye-height, bare except a single row of bristles below ; 

 epistoma slightly produced, vibrissse above the lower edge of 

 head, only a single small bristle above them; palpi ordinary; 

 proboscis short, with a pair of long hairs below beyond the 

 elbow; labella ordinary; back of head bulging, with sparse 

 hairs. Thoracic chsetotaxy^ : postsutural dorsocentrals 3 (a 

 rather large hair behind the third), anterior dorsocentrals 2, 

 humeral 2 or 3, interhumeral 1, presutural 1, notopleural 2, 

 intraalar 2, supraalar 1, a small prealar, postalar 2 (the hind 

 one very large), anterior acrostichal 3 pairs rather large and 

 no small hairs, posterior acrostichal 5 or 6 small pairs and 1 

 larger prescutellar, sternopleural 2 in front and 2 behind, pro- 

 thoracic 1, mesopleural 5 behind and 1 at front lower 

 corner; scutellum bare below with 1 marginal near base, 

 1 pair long apical close together, 1 smaller discal. the disk 

 without hairs except at sides ; pteropleura and metapleura bare. 

 Front calypter projecting far beyond the reduced hind one. 

 Hind tibia with a row of 3 or 4 erect bristles on the extensor 

 side, the lowest subapical. Venation ordinary, costal spine 

 present, third and fourth veins parallel, ant cv at middle of 

 wing, the cross-veins separated by almost the length of the 

 last segment of the fourth : last segment of fifth short, sixth 

 slender but reaching the margin ; costa setulose. 



In listing the preceding characters, it is not intended to in- 

 timate that a species must have them all in order to be con- 



' The names of the thoracic bristles are given in full here, but are generally 



abbreviated farther on; they are explained in Williston's Manual, my Sarcophaga 



and Allies, also in a valuable and easily accessible paper by Walton, Ent. News, 

 XX, 307-314. 



