A South Texas woman has given birth to triplet girls. with two of the babies conjoined.

A spokeswoman at Corpus Christi Medical Center-Bay Area said Monday that the infants were breathing without respirators.

Lisa Robertson says the premature girls were born Saturday to Silvia Hernandez of Brownsville via cesarean section, at about 34 weeks. A normal pregnancy is about 41 weeks.

The girls' names are Catalina, Ximena and Scarlett. They each weigh 4 pounds, 11 ounces.

Robertson and husband Raul Torres already had a son.

Ximena and Scarlett are conjoined. They were transferred to Driscoll Children's Hospital in Corpus Christi. A message left with that hospital wasn't immediately returned Monday.