Parker. — New England Sarcophagidae. 
PLATE 3. 
Fig. 18. Side view of thorax. 
Fig. 19. Region near posterior spiracle to show "hairs of anterior margin" 
and "spiracular cover." 
Fig. 20. Base of wing structure and associated thoracic plates. 
Fig. 21. Ventral plates of Boettcheria lalisterna, n. sp., to show "ventral 
plates with their sides, as a whole, diverging posteriorly." 
Fig. 22. Ventral plates of Ravinia quadrisetosa (Coquillett) to show "ventral 
plates with their sides, as a whole, parallel." 
Fig. 23. Figure to show method of measuring length of tarsal segment. 
