168 BULLETIN: MUSEUM. OF COMPARATIVE ZOOLOGY. 
part at least (Cape Region). Bryant, Proc: Calif. Acad. Sci., 2d ser., IT. 
1889, 306, part at least (Cape Region). 
Tachycineta thalassinus SHARPE, Cat. Birds Brit. Mus., X. 1885, 119-121, part. 
T.[achycineta] thalassina Cours, Key N. Amer. Birds, 4th ed., 1894, 323, part. 
Ripeway, Man. N. Amer. Birds, 2d ed., 1896, 462, part. 
Subspectfie characters: —Similar to T. lepida Mearns, but with the wing 
decidedly and apparently constantly shorter. 
Type ¢ ad. No. 15,406. Collection of William Brewster, Sierra de la Laguna, 
Lower California, June 6, 1887, M. Abbott Frazar. 
Measurements : — 
Mus. No. Sex Locality Date Wing Tail 
15,4011 ¢ Sierra dela Laguna, Lower Cal. June 4,1887 4.35 1.88 
15,4001 ¢ Fiat ak at * a ss s ‘comes 4.24 1.89 
15,3971 ¢ ce wesas ss ee sf Miaiyaelilemcs 4.20 2.00 
15,4051 ¢ Cus oS is ye June 6, “ 4.20 1.82 
15,399! ¢ cost Pests ss “s ss s¢ Der 4.19 1.91 
15,3981 ¢ Soy eeib 6 us D May 11, “ 4.18 2.09 
15,4021 ¢ ee _ se June!) 45.5 4.16 1.76 
15,3961 ¢ ane « s ae April 29; “ 4.15 193 
15,4031 ¢ Eee ee ‘ « a dinynes 4 4.13 1.91 
15,4041 ¢ cee at a s < ee Gis 4.09 1.76 
15,4061 ¢ st ees ee Ss of ss e sence 4.07 1.73 
15,4121 o& Triunfo, es fs April lose 4.21 1.85 
1S AA rs ss “ une; 24a 4.18 1.75 
15,4111 ¢ a ef “ Acoril eel pies 4.10 1.87 
15,4131 ¢ < ef “ wo 6 FINES 4.08 1.84 
USA Eo Ry lebys ss cs Feb. 4, “ 4.13 1.79 
Sy DA op GS ee “ March 28, “ 4.12 1.87 
Gy OIG eee cy ey ce e Keb 4g 4.09 1.80 
W548 gs 9 sf t s he eLe 3.98 1.78 
Average, 4.15 1.85+ 
15,4071 @ Sierra dela Laguna, Lower Cal. June 2,1887 4.11 1.76 
15,4081 @ Sg ae s . “ fe Aes 4.05 1.69 
15,4091 @Q £6 wg gel ee sf cs of § cece 3.95 1.67 
15,4101 9 a PS < sf ss ss Games 3.94 1.65 
15,4151 9? Triunfo, se w April bs ss 4.09 ieee 
15,4161 @ sy sn - e Sonne 4.07 Uee(ts 
154232 9) TayPaz; ss cs Feb. 14, “ 4.25 180 
GAD OF es 6 i March 28, “ 3.98 1.70 
UD A22 a = <Q, ates sf cs Heb) 145 3.90 1.68 
Average, 4.04— 1.724 
1 Collection William Brewster. 
