ILLUSTRATIONS 



Plate I 



Fig. 1. Abnormal crop of Thalassema sorbillans Lampert. X 10. (Drawn 

 by Santos.) 



2. Thalassema griffini sp. nov. Natural size. (Drawn by Espinosa.) 



3. Transverse section of the body wall of Thalassema griffini sp. nov. 



from the middle region. (Zeiss ocular 1, objective D, camera 

 lucida outline, reduced i.) 



ep, epidermis. Imf, interbundle longitudinal muscle 



ep. gl, epidermal glands. fibers. 



d, dermis. cm, oblique muscle. 



cm, circular muscle. st, stomata. 



Ivtb, longitudinal muscle ce, coelomic epithelium, 

 bundle. 



4. Longitudinal section of the body wall of Thalassema griffini sp. nov. 



through an interval in the middle region. (Zeiss ocular 1, ob- 

 jective D, camera lucida outline, reduced J.) 

 ep, epidermis. cm, circular muscle. 



ep. gl, epidermal glands. omh, oblique muscle bundles. 

 d, dermis. . sb, septal bands. 



dgl, dermal gland. ce, coelomic epithelium. 



Imf, longitudinal muscle si, stomata. 

 fibers. 



Plate II 



Fig. 5. Transverse section of the body wall of Thalassema griffini sp. nov. 

 through the anterior terminal region. (Zeiss ocular 1, objective 

 D, camera lucida outline, reduced i.) 

 ep, epidermis. era, circular muscle. 



ep. gl, epidermal glands. Im, longitudinal muscle. 

 d, dermis. om, oblique muscle. 



dgl, dermal glands. ce, coelomic epithelium. 



6. Transverse section through the anterior part of the oesophagus of 



Thalassema griffini sp. nov. (Zeiss ocular 3, objective tV, cam- 

 era lucida outline, reduced 1.) 

 epth, epithelium. ml, muscle layer. 



gl, glands. end, endothelium. 



7. Transverse section through the crop of Thalassema griffini sp. nov. 



(Zeiss ocular 3, objective xV» camera lucida outline, reduced i.) 

 epth, epithelium. end, endothelium. 



m,l, muscle layer. ct, connective tissue with sinuses, 



md, mucous droplets. 



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