Bull. U S. B. F., 1909. 



Plate XXXIV. 



.9: 



TruJZ 



nn m 1 med.t ' 



p.g.rrpl , , tarl.jTV 



pq III Z 

 OVilf I -/ 



'/r/ m 



hrcav^—- ' 

 arOzhr. JL 



y 



r 



Podnhr 



"pLhr 



tnt.s sC's fLg.ch- 



Transverse section of body of female lobster in plane of gastric mill (see pi. xxxin). ad. m, adductor mandibuli muscle; 

 art, branchio-cardiac vessel; arth. br, arthrobranch; br. cav. branchial cavity; brs, branchiostegite; d. g. g, duct of 

 gastric gland; Ji. g. ck, basal flexor cf great cheliped; g. g, gastric gland; ml. s, internal skeleton, in roof of sternal 

 sinus; n (x), main nerve of great clieliped; p.g.m.T, first division of posterior gastric muscle; pi. br. pleurobranch; 

 Podo br, podobranch; i. ad. m, tendon of adductor mandibuli muscle; th. Ji, floor of thoracic cavity. 



